The WordPress.com stats helper monkeys prepared a 2012 annual report for this blog.
Here’s an excerpt:
600 people reached the top of Mt. Everest in 2012. This blog got about 2,500 views in 2012. If every person who reached the top of Mt. Everest viewed this blog, it would have taken 4 years to get that many views.
In today’s blog I am going to give you the method I use to obtain the Windows Product Activation information in Astronomy.
Q: So, where does this information come from?
A: Well, as you may know, you can obtain this information from the following script:
C:\Windows\System32\slmgr.vbs
I always felt this needed to be modified for use in .Net, so I refactored this a bit and created my own replacement method:
/// <summary>
/// Retrieves licensing information.
/// </summary>
/// <param name="managementScope">The management scope.</param>
/// <returns></returns>
public static string GetLicensingInfo(ManagementScope managementScope)
{
// Output
string result = "Information Unavailable";
const string windowsAppId = "55c92734-d682-4d71-983e-d6ec3f16059f";
// Default values
const uint HR_SL_E_GRACE_TIME_EXPIRED = 0xC004F009;
const uint HR_SL_E_NOT_GENUINE = 0xC004F200;
// Set WMI query
var query =
new WqlObjectQuery(
"SELECT LicenseStatus, GracePeriodRemaining " +
"FROM SoftwareLicensingProduct " +
"WHERE (PartialProductKey <> NULL) AND " +
"(ApplicationId='" + windowsAppId + "')");
// Get items
using (var searcher = new ManagementObjectSearcher(managementScope, query))
// Get data
using (var colItems = searcher.Get())
{
foreach (ManagementBaseObject obj in colItems)
{
string subline;
// License Status
int licenseStatus = Convert.ToInt32(obj.GetPropertyValue("LicenseStatus"));
// Time remaining: minutes / days
int gpMin = Convert.ToInt32(obj.GetPropertyValue("GracePeriodRemaining"));
int gpDay = gpMin / (24 * 60);
// Evaluate
switch (licenseStatus)
{
case 0:
result = "Unlicensed";
break;
case 1:
result = "Licensed";
if (gpMin > 0)
{
subline =
String.Format(
"Activation expiration: " +
"{0} minute(s) ({1} day(s))", gpMin, gpDay);
result += "\n" + subline;
}
break;
case 2:
result = "Initial grace period";
subline =
String.Format("Time remaining: {0} minute(s) " +
"({1} day(s))", gpMin, gpDay);
result += "\n" + subline;
break;
case 3:
result =
"Additional grace period (KMS license expired or " +
"hardware out of tolerance)";
subline =
String.Format("Time remaining: {0} minute(s) " +
"({1} day(s))", gpMin, gpDay);
result += "\n" + subline;
break;
case 4:
result = "Non-genuine grace period.";
subline =
String.Format("Time remaining: {0} minute(s) " +
"({1} day(s))", gpMin, gpDay);
result += "\n" + subline;
break;
case 5:
result = "Notification";
uint licenseStatusReason;
uint.TryParse(obj.GetPropertyValue("GracePeriodRemaining").ToString(),
out licenseStatusReason);
// Evaluate
switch (licenseStatusReason)
{
case HR_SL_E_NOT_GENUINE:
subline =
String.Format(
"Notification Reason: 0x{0} " +
"(non-genuine).", licenseStatusReason);
break;
case HR_SL_E_GRACE_TIME_EXPIRED:
subline =
String.Format(
"Notification Reason: 0x{0} " +
"(grace time expired).", licenseStatusReason);
break;
default:
subline =
String.Format("Notification Reason: 0x{0}.",
licenseStatusReason);
break;
}
result += "\n" + subline;
break;
case 6:
result = "Extended grace period";
subline =
String.Format("Time remaining: {0} minute(s) " +
"({1} day(s))", gpMin, gpDay);
result += "\n" + subline;
break;
default:
result = "Unknown";
break;
}
}
}
// return
return result;
}
An overboard implementation:
/// <summary>
/// Connects to a target computer through Kerberos authentication.
/// </summary>
/// <param name="computername">The computername.</param>
/// <param name="user">The user.</param>
/// <param name="securePass">The secure pass.</param>
/// <returns>
/// A ManagementScope context for the current connection.
/// </returns>
public static ManagementScope Connect(string computername, string user,
SecureString securePass)
{
// Build an options object for the remote connection
var options = new ConnectionOptions
{
Impersonation = ImpersonationLevel.Impersonate,
EnablePrivileges = true
};
// Set properties
// Check name
if (String.IsNullOrEmpty(computername))
{
computername = ".";
}
// Check credentials
// Cannot pass a blank user and password.
if (!String.IsNullOrEmpty(user))
{
options.Username = user;
options.SecurePassword = securePass;
}
// Make a connection to a remote computer.
var managementScope =
new ManagementScope($@"\{computername}\root\cimv2", options);
try
{
// Connect
managementScope.Connect();
}
catch (Exception ex)
{
throw ex;
}
// return
return managementScope;
}
/// <summary>
/// Gets the license you so desperately want.
/// </summary>
public void GetMyLicense()
{
// Get the management scope
var myManagementScope = Connect(".", "XCALIBUR\jarzt", {my secure password});
// Get the licensing
string licensing = GetLicensingInfo(myManagementScope);
// Report to client
MessageBox.Show("My current licensing status: " + licensing);
}
So, really that’s all there is to it.
Happy coding!
One of the issues I have seen around the web is in regard to TabControls and missing content. The “missing” content in this case is the content of tab items within a TabControl that are not in focus. By design, a TabControl will only load the content of a TabItem once it has been brought into focus. This is not bad design if you think about it for a moment.
Q: Shouldn’t we just load into memory what we need at the time we need it to minimize our footprint?
A: Yes, definitely. This is good application design.
But, what about the case where I need information from other tabs that have not yet been brought into focus? For example, what if I have a GridView in another tab and I want to show the row count right when the control is loaded? Well, the answer to that is pre-loading your tab items. And since the TabControl does not have this behavior built-in by default, we will have to do it ourselves.
Here is one way I saw on the web that I wanted to bring to your attention:
for (var i = 0; i < myTabControl.Items.Count; i++)
{
myTabControl.SelectedIndex = i;
myTabControl.UpdateLayout();
}
Well, this looks pretty good and it has very little code. This should work, right? No, not in all cases. The reason is that this will cycle through the tabs as fast as the UpdateLayout() call completes on each tab. Because this implementation will not necessarily wait until each tab is done loading, we cannot guarantee that the content of each tab has finished loading into the Visual Tree. What we need is a solution that waits until each tab item has completely loaded its content before we move to the next tab.
So, let’s state our list of objectives:
The approach:
In order to effectively meet the first objective, we should chain the loading of each tab through recursion.
So, here are our 2 methods:
/// <summary>
/// Preloads tab items of a tab control in sequence.
/// </summary>
/// <param name="tabControl">The tab control.</param>
public static void PreloadTabs(TabControl tabControl)
{
// Evaluate
if (tabControl.Items != null)
{
// The first tab is already loaded
// so, we will start from the second tab.
if (tabControl.Items.Count > 1)
{
// Hide tabs
tabControl.Opacity = 0.0;
// Last action
Action onComplete = () =>
{
// Set index to first tab
tabControl.SelectedIndex = 0;
// Show tabs
tabControl.Opacity = 1.0;
};
// Second tab
var firstTab = (tabControl.Items[1] as TabItem);
if (firstTab != null)
{
PreloadTab(tabControl, firstTab, onComplete);
}
}
}
}
/// <summary>
/// Preloads an individual tab item.
/// </summary>
/// <param name="tabControl">The tab control.</param>
/// <param name="tabItem">The tab item.</param>
/// <param name="onComplete">The onComplete action.</param>
private static void PreloadTab(TabControl tabControl, TabItem tabItem, Action onComplete = null)
{
// On update complete
tabItem.Loaded += delegate
{
// Update if not the last tab
if (tabItem != tabControl.Items.Last())
{
// Get next tab
var nextIndex = tabControl.Items.IndexOf(tabItem) + 1;
var nextTabItem = tabControl.Items[nextIndex] as TabItem;
// Preload
if (nextTabItem != null)
{
PreloadTab(tabControl, nextTabItem, onComplete);
}
}
else
{
if (onComplete != null)
{
onComplete();
}
}
};
// Set current tab context
tabControl.SelectedItem = tabItem;
}
So what’s going on here?
And just like that we have a tab pre-loader for our TabControl.
That’s all for now. Happy coding.
This article has been revised here.
I have seen several examples of different methods to perform a deep copy in C#. The most common one is with a Stream, implemented like this:
public static T DeepClone<T>(T obj)
{
using (var ms = new MemoryStream())
{
var formatter = new BinaryFormatter();
formatter.Serialize(ms, obj);
ms.Position = 0;
return (T) formatter.Deserialize(ms);
}
}
That is certainly one way to do it but it won’t work in Silverlight.
The suggested Sliverlight approach:
public static T DeepCopy<T>(this T oSource)
{
T oClone;
DataContractSerializer dcs = new DataContractSerializer(typeof(T));
using (MemoryStream ms = new MemoryStream())
{
dcs.WriteObject(ms, oSource);
ms.Position = 0;
oClone = (T)dcs.ReadObject(ms);
}
return oClone;
}
All right, that works in Silverlight but it requires that all objects passed are Serializable. That is actually a bit of a daunting task for custom objects at times, and we should try to use a simpler more universal approach.
So, I suggest using reflection:
/// <summary>
/// Copies all public properties from one object to another.
/// </summary>
/// <param name="source">The source.</param>
/// <param name="destination">The destination.</param>
/// <exception cref="System.Exception">Source and destination cannot be null and must be
/// of the same type!</exception>
public static void DeepCopy(object source, object destination)
{
if ((source != null && destination != null) &&
(source.GetType() == destination.GetType()))
{
// Get properties
var propertyInfos = source.GetType().GetProperties();
if (propertyInfos.Length <= 0) return;
// Evaluate
foreach (var propInfo in propertyInfos)
{
// Process only public properties
if (!propInfo.CanWrite) continue;
// Get value from source and assign to destination
object value = propInfo.GetValue(source, null);
propInfo.SetValue(destination, value, null);
if (value == null) continue;
// Check for properties and propogate if they exist
var newPropInfos = value.GetType().GetProperties();
if (newPropInfos.Length > 0)
{
// Copy properties for each child where necessary
DeepCopy(
source.GetType().GetProperty(propInfo.Name),
destination.GetType().GetProperty(propInfo.Name));
}
}
}
else
{
throw new Exception(
"Source and destination cannot be null and must be of " +
"the same type!");
}
}
This will work in Silverlight because of the if block for propInfo.CanWrite. This is added because based on Silverlights rigid security constraints we can only copy public properties.
That’s all for now.
In this post I am going to introduce the idea of subscribing to property change events in our Model Base.
Note: Please read Part I before continuing here.
Note: Please read Part II before continuing here.
The purpose of this is to cover a potentially annoying situation:
Scenario: Let’s say you have a ViewModel, and inside that you have another ViewModel acting as a property like this:
private MyCustomObject _customObjectInstance;
public MyCustomObject CustomObjectInstance
{
get
{
return _customObjectInstance;
}
set
{
SetValue("CustomObjectInstance", ref _customObjectInstance, ref value);
}
}
Okay, now you want your UI bound to the current ViewModel to change every time CustomObjectInstance.MeterReading changes.
Q: (Panic moment) So, how do I do that without breaking my wonderful abstraction?
A: Implementing an ability to Subscribe to a nested property. All it takes is a little reflection and patience.
The idea is that we tell that property to fire a specific Action whenever it is changed in our ViewModelBase.
The first thing we will need to add is a private list of subscriptions:
/// <summary> /// Subscription list. /// </summary> private readonly List<Tuple<string, Action<object>>> _subscriptions;
Instead of creating yet another custom object, I decided to use a Tuple because they are convenient.
Next, we make sure to create a new instance of _subscriptions in the Constructor:
/// <summary>
/// Default constructor.
/// </summary>
protected ViewModelBase()
{
_subscriptions = new List<Tuple<string, Action<object>>>();
}
Now we will expose a Subscribe method.
/// <summary>
/// Subscribes an action to a specific property that will be called
/// during that property's OnPropertyChanged event.
/// </summary>
/// <param name="propertyName"></param>
/// <param name="onChange"></param>
public void Subscribe(string propertyName, Action<object> onChange)
{
// Verify property
var propInfo = this.GetType().GetProperty(propertyName);
// If valid, add to subscription pool.
if (propInfo != null)
{
_subscriptions.Add(
new Tuple<string, Action<object>>(propertyName, onChange));
}
else
{
// Invalid property name provided.
throw new Exception(
"Property "" + propertyName + "" could not be " +
"found for type "" + this.GetType().ToString() + ""!");
}
}
This idea here is fairly simple:
Q: Alright, now we have a nice Tuple-list full of property names and Actions. Now what?
A: Glad you asked. Here comes the hard part:
/// <summary>
/// Processes existing subscriptions matching the provided property name.
/// </summary>
/// <param name="propertyName"></param>
private void ProcessSubscriptions(string propertyName)
{
// Get matching subscriptions
var subList =
(from p in _subscriptions
where p.Item1 == propertyName
select p).ToList();
// Check if any matches were found.
if (subList.Any())
{
// Process actions
foreach (var sub in subList)
{
// Evaluate action
var onChange = sub.Item2;
if (onChange != null)
{
// Get property value by name
var propInfo = this.GetType().GetProperty(propertyName);
var propValue = propInfo.GetValue(this, null);
// Invoke action
onChange(propValue);
}
}
}
}
ProcessSubscriptions does the following:
So, the last piece is making sure ProcessSubscriptions is fired when the property has been changed. And that is as easy as augmenting our trusted OnPropertyChanged method:
/// <summary>
/// Calls the PropertyChanged event
/// </summary>
/// <param name="propertyName"></param>
/// <param name="onChanged"></param>
protected void OnPropertyChanged(string propertyName, Action onChanged = null)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null)
{
// Call handler
handler(this, new PropertyChangedEventArgs(propertyName));
// Subscriptions
ProcessSubscriptions(propertyName);
// On changed
if (onChanged != null)
{
onChanged();
}
}
}
No worries if your specific property being changed is without entries. ProcessSubscriptions only acts on what is present in _subscriptions, so no entries means it just moves on.
Here is how you would use it in your parent ViewModel:
CustomObjectInstance.Subscribe("MeterReading", obj => MyActionThatDoesStuff());
Now, every time CustomObjectInstance.MeterReading is updated, the MyActionThatDoesStuff Action will be called allowing you to always have the latest values from your nested properties.
Here is our new ViewModelBase in it’s entirety:
/// <summary>
/// Extends the INotifyPropertyChanged interface to the class properties.
/// </summary>
public abstract class ViewModelBase : INotifyPropertyChanged
{
#region Members
/// <summary>
/// Subscription list.
/// </summary>
private readonly List<Tuple<string, Action<object>>> _subscriptions;
#endregion
#region Constructors
/// <summary>
/// Default constructor.
/// </summary>
protected ViewModelBase()
{
_subscriptions = new List<Tuple<string, Action<object>>>();
}
#endregion
#region Methods
/// <summary>
/// To be used within the "set" accessor in each property.
/// This invokes the OnPropertyChanged method.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="name"></param>
/// <param name="value"></param>
/// <param name="newValue"></param>
/// <param name="onChanged"></param>
protected void SetValue<T>(string name, ref T value, ref T newValue,
Action onChanged = null)
{
if (newValue != null)
{
if (!newValue.Equals(value))
{
value = newValue;
OnPropertyChanged(name, onChanged);
}
}
else
{
value = default(T);
}
}
#endregion
#region INotifyPropertyChanged
/// <summary>
/// The PropertyChanged event handler.
/// </summary>
public event PropertyChangedEventHandler PropertyChanged;
/// <summary>
/// Calls the PropertyChanged event
/// </summary>
/// <param name="propertyName"></param>
/// <param name="onChanged"></param>
protected void OnPropertyChanged(string propertyName, Action onChanged = null)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null)
{
// Call handler
handler(this, new PropertyChangedEventArgs(propertyName));
// Subscriptions
ProcessSubscriptions(propertyName);
// On changed
if (onChanged != null)
{
onChanged();
}
}
}
/// <summary>
/// Subscribes an action to a specific property that will be called
/// during that property's OnPropertyChanged event.
/// </summary>
/// <param name="propertyName"></param>
/// <param name="onChange"></param>
public void Subscribe(string propertyName, Action<object> onChange)
{
// Verify property
var propInfo = this.GetType().GetProperty(propertyName);
// If valid, add to subscription pool.
if (propInfo != null)
{
_subscriptions.Add(
new Tuple<string, Action<object>>(propertyName, onChange));
}
else
{
// Invalid property name provided.
throw new Exception(
"Property "" + propertyName + "" could not be " +
"found for type "" + this.GetType().ToString() + ""!");
}
}
/// <summary>
/// Clears the subscriptions.
/// </summary>
public void ClearSubscriptions()
{
_subscriptions.Clear();
}
/// <summary>
/// Processes existing subscriptions matching the provided property name.
/// </summary>
/// <param name="propertyName"></param>
private void ProcessSubscriptions(string propertyName)
{
// Get matching subscriptions
var subList =
(from p in _subscriptions
where p.Item1 == propertyName
select p).ToList();
// Check if any matches were found.
if (subList.Any())
{
// Process actions
foreach (var sub in subList)
{
// Evaluate action
var onChange = sub.Item2;
if (onChange != null)
{
// Get property value by name
var propInfo = this.GetType().GetProperty(propertyName);
var propValue = propInfo.GetValue(this, null);
// Invoke action
onChange(propValue);
}
}
}
}
#endregion
}
I hope this has been helpful for you.
In this article, we are going to look at calling an Action when our property changes.
Note: Please read Part I before continuing here.
Alright, so let’s look at our ViewModelBase from Part I:
/// <summary>
/// Extends the INotifyPropertyChanged interface to the class properties.
/// </summary>
public abstract class ViewModelBase : INotifyPropertyChanged
{
#region Methods
/// <summary>
/// To be used within the "set" accessor in each property.
/// This invokes the OnPropertyChanged method.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="name"></param>
/// <param name="value"></param>
/// <param name="newValue"></param>
protected void SetValue<T>(string name, ref T value, ref T newValue)
{
if (newValue != null)
{
if (!newValue.Equals(value))
{
value = newValue;
OnPropertyChanged(name);
}
}
else
{
value = default(T);
}
}
#endregion
#region INotifyPropertyChanged
/// <summary>
/// The PropertyChanged event handler.
/// </summary>
public event PropertyChangedEventHandler PropertyChanged;
/// <summary>
/// Calls the PropertyChanged event
/// </summary>
/// <param name="propertyName"></param>
protected void OnPropertyChanged(string propertyName)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null)
{
handler(this, new PropertyChangedEventArgs(propertyName));
}
}
#endregion
}
Q: Okay, so what now?
A: Glad you asked. Let’s augment the above class:
/// <summary>
/// Extends the INotifyPropertyChanged interface to the class properties.
/// </summary>
public abstract class ViewModelBase : INotifyPropertyChanged
{
#region Methods
/// <summary>
/// To be used within the "set" accessor in each property.
/// This invokes the OnPropertyChanged method.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="name"></param>
/// <param name="value"></param>
/// <param name="newValue"></param>
protected void SetValue<T>(string name, ref T value, ref T newValue, Action onChanged = null)
{
if (newValue != null)
{
if (!newValue.Equals(value))
{
value = newValue;
OnPropertyChanged(name, onChanged);
}
}
else
{
value = default(T);
}
}
#endregion
#region INotifyPropertyChanged
/// <summary>
/// The PropertyChanged event handler.
/// </summary>
public event PropertyChangedEventHandler PropertyChanged;
/// <summary>
/// Calls the PropertyChanged event
/// </summary>
/// <param name="propertyName"></param>
protected void OnPropertyChanged(string propertyName, Action onChanged = null)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null)
{
handler(this, new PropertyChangedEventArgs(propertyName));
// On changed
if (onChanged != null)
{
onChanged();
}
}
}
#endregion
}
Essentially, we added an Action as a parameter to the SetValue method. This is then passed whenever the OnPropertyChanged method is called and executed after the event fires (if it is not null).
Using it is as easy as this:
private string phoneNumberValue = String.Empty;
public string PhoneNumber
{
get
{
return this.phoneNumberValue;
}
set
{
SetValue("PhoneNumber", ref this.phoneNumberValue, ref value, () => { UpdateSomeOtherUISection(); });
}
}
It’s not a common need, but sometimes something like this can really get you out of a bind when you need to update other areas of your application when this property changes.
Try it sometime.
Having used properties in an ObservableCollection, you are probably familiar with implementing INotifyPropertyChanged in your custom objects.
A property utilizing this implementation would look like this:
private string phoneNumberValue = String.Empty;
public string PhoneNumber
{
get
{
return this.phoneNumberValue;
}
set
{
if (value != this.phoneNumberValue)
{
this.phoneNumberValue = value;
NotifyPropertyChanged("PhoneNumber");
}
}
}
To remedy this repetitive implementation, I created this:
/// <summary>
/// Extends the INotifyPropertyChanged interface to the class properties.
/// </summary>
public abstract class ViewModelBase : INotifyPropertyChanged
{
#region Methods
/// <summary>
/// To be used within the "set" accessor in each property.
/// This invokes the OnPropertyChanged method.
/// </summary>
/// <typeparam name="T"></param>
/// <param name="name"></param>
/// <param name="value"></param>
/// <param name="newValue"></param>
protected void SetValue&amp;amp;amp;lt;T&amp;amp;amp;gt;(string name, ref T value, ref T newValue)
{
if (newValue != null)
{
if (!newValue.Equals(value))
{
value = newValue;
OnPropertyChanged(name);
}
}
else
{
value = default(T);
}
}
#endregion
#region INotifyPropertyChanged
/// <summary>
/// The PropertyChanged event handler.
/// </summary>
public event PropertyChangedEventHandler PropertyChanged;
/// <summary>
/// Calls the PropertyChanged event
/// </summary>
/// <param name="propertyName"></param>
protected void OnPropertyChanged(string propertyName)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null)
{
handler(this, new PropertyChangedEventArgs(propertyName));
}
}
#endregion
}
Then, all we need to do is inherit ViewModelBase in our custom object.
Now, our property would look something like this:
private string phoneNumberValue = String.Empty;
public string PhoneNumber
{
get
{
return this.phoneNumberValue;
}
set
{
SetValue("PhoneNumber", ref this.phoneNumberValue, ref value);
}
}
So, what was the reason for doing this?
Good news is since all the C# goodness over the last 10 years, I have greatly improved this implementation. It can be used like this:
private string _phoneNumberValue = String.Empty;
public string PhoneNumber
{
get => _phoneNumberValue;
set => NotifyOfChange(value, ref _phoneNumberValue);
}
Simple, right?
Note: This topic has been updated with a complete solution in Part 2.
So, I was spending some time trying to figure out how to make a menu in WPF scrollable before it maxed out on my screen height. Well, unfortunately, the only way to do it is to override the default Aero template for the MenuItem in WPF. You can get that here.
Here’s the section to change. Notice the addition of “MaxHeight” on the “SubMenuScrollViewer” object. It’s really that simple.
<Popup x:Name="PART_Popup"
AllowsTransparency="true"
Placement="Right"
VerticalOffset="-3"
HorizontalOffset="-2"
IsOpen="{Binding Path=IsSubmenuOpen,RelativeSource={RelativeSource TemplatedParent}}"
Focusable="false"
PopupAnimation="{DynamicResource {x:Static SystemParameters.MenuPopupAnimationKey}}">
<theme:SystemDropShadowChrome Name="Shdw" Color="Transparent">
<ContentControl Name="SubMenuBorder"
Template="{DynamicResource {ComponentResourceKey TypeInTargetAssembly={x:Type FrameworkElement}, ResourceId=SubmenuContent}}"
IsTabStop="false">
<ScrollViewer Name="SubMenuScrollViewer" CanContentScroll="true" MaxHeight="400"
Style="{DynamicResource {ComponentResourceKey TypeInTargetAssembly={x:Type FrameworkElement}, ResourceId=MenuScrollViewer}}">
<Grid RenderOptions.ClearTypeHint="Enabled">
<Canvas Height="0" Width="0" HorizontalAlignment="Left" VerticalAlignment="Top">
<Rectangle
Height="{Binding ElementName=SubMenuBorder,Path=ActualHeight}"
Width="{Binding ElementName=SubMenuBorder,Path=ActualWidth}"
Fill="{StaticResource SubMenuBackgroundBrush}" />
</Canvas>
<ItemsPresenter Name="ItemsPresenter" Margin="2"
KeyboardNavigation.TabNavigation="Cycle"
KeyboardNavigation.DirectionalNavigation="Cycle"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
Grid.IsSharedSizeScope="true"/>
</Grid>
</ScrollViewer>
</ContentControl>
</theme:SystemDropShadowChrome>
</Popup>
Here is a screenshot of the desired effect:
Example of Height-Controlled Menu
Here is the full Resource Dictionary xaml:
<ResourceDictionary
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:theme="clr-namespace:Microsoft.Windows.Themes;assembly=PresentationFramework.Aero">
<MenuScrollingVisibilityConverter x:Key="MenuScrollingVisibilityConverter"/>
<Geometry x:Key="DownArrow">M 0,0 L 3.5,4 L 7,0 Z</Geometry>
<Geometry x:Key="UpArrow">M 0,4 L 3.5,0 L 7,4 Z</Geometry>
<Geometry x:Key="RightArrow">M 0,0 L 4,3.5 L 0,7 Z</Geometry>
<Geometry x:Key="Checkmark">M 0,5.1 L 1.7,5.2 L 3.4,7.1 L 8,0.4 L 9.2,0 L 3.3,10.8 Z</Geometry>
<SolidColorBrush x:Key="SubMenuBackgroundBrush" Color="#FFF5F5F5" />
<LinearGradientBrush x:Key="MenuItemSelectionFill"
StartPoint="0,0"
EndPoint="0,1">
<LinearGradientBrush.GradientStops>
<GradientStop Color="#34C5EBFF"
Offset="0"/>
<GradientStop Color="#3481D8FF"
Offset="1"/>
</LinearGradientBrush.GradientStops>
</LinearGradientBrush>
<LinearGradientBrush x:Key="MenuItemPressedFill"
StartPoint="0,0"
EndPoint="0,1">
<LinearGradientBrush.GradientStops>
<GradientStop Color="#28717070"
Offset="0"/>
<GradientStop Color="#50717070"
Offset="0.75"/>
<GradientStop Color="#90717070"
Offset="1"/>
</LinearGradientBrush.GradientStops>
</LinearGradientBrush>
<Style x:Key="{x:Static MenuItem.SeparatorStyleKey}"
TargetType="{x:Type Separator}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Separator}">
<Grid SnapsToDevicePixels="true" Margin="0,6,0,4">
<Rectangle Height="1"
Margin="30,0,1,1"
Fill="#E0E0E0"/>
<Rectangle Height="1"
Margin="30,1,1,0"
Fill="White"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<ControlTemplate x:Key="{ComponentResourceKey TypeInTargetAssembly={x:Type MenuItem}, ResourceId=TopLevelItemTemplateKey}"
TargetType="{x:Type MenuItem}">
<Grid SnapsToDevicePixels="true">
<Rectangle x:Name="OuterBorder"
RadiusX="2"
RadiusY="2"/>
<Rectangle Name="Bg"
Margin="1"
Fill="{TemplateBinding MenuItem.Background}"
Stroke="{TemplateBinding MenuItem.BorderBrush}"
StrokeThickness="1"
RadiusX="1"
RadiusY="1"/>
<Rectangle x:Name="InnerBorder"
Margin="2"/>
<DockPanel>
<ContentPresenter x:Name="Icon"
Margin="4,0,6,0"
VerticalAlignment="Center"
ContentSource="Icon"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
<Path x:Name="GlyphPanel"
Margin="7,0,0,0"
Visibility="Collapsed"
VerticalAlignment="Center"
Fill="{TemplateBinding MenuItem.Foreground}"
FlowDirection="LeftToRight"
Data="{StaticResource Checkmark}"/>
<ContentPresenter ContentSource="Header"
Margin="{TemplateBinding MenuItem.Padding}"
RecognizesAccessKey="True"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
</DockPanel>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="Icon"
Value="{x:Null}">
<Setter TargetName="Icon"
Property="Visibility"
Value="Collapsed"/>
</Trigger>
<Trigger Property="IsChecked"
Value="true">
<Setter TargetName="GlyphPanel"
Property="Visibility"
Value="Visible"/>
<Setter TargetName="Icon"
Property="Visibility"
Value="Collapsed"/>
</Trigger>
<Trigger Property="IsHighlighted"
Value="true">
<Setter TargetName="Bg"
Property="Stroke"
Value="#90717070"/>
<Setter TargetName="OuterBorder"
Property="Stroke"
Value="#50FFFFFF"/>
<Setter TargetName="InnerBorder"
Property="Stroke"
Value="#50FFFFFF"/>
</Trigger>
<Trigger Property="IsKeyboardFocused"
Value="true">
<Setter TargetName="Bg"
Property="Stroke"
Value="#E0717070"/>
<Setter TargetName="Bg"
Property="Fill"
Value="{StaticResource MenuItemPressedFill}"/>
<Setter TargetName="InnerBorder"
Property="Stroke"
Value="#50747272"/>
</Trigger>
<Trigger Property="IsEnabled"
Value="false">
<Setter Property="Foreground"
Value="#FF9A9A9A"/>
<Setter TargetName="GlyphPanel"
Property="Fill"
Value="#848589"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
<ControlTemplate x:Key="{ComponentResourceKey TypeInTargetAssembly={x:Type MenuItem}, ResourceId=TopLevelHeaderTemplateKey}"
TargetType="{x:Type MenuItem}">
<Grid SnapsToDevicePixels="true">
<Rectangle x:Name="OuterBorder"
RadiusX="2"
RadiusY="2"/>
<Rectangle Name="Bg"
Margin="1"
Fill="{TemplateBinding MenuItem.Background}"
Stroke="{TemplateBinding MenuItem.BorderBrush}"
StrokeThickness="1"
RadiusX="1"
RadiusY="1"/>
<Rectangle x:Name="InnerBorder"
Margin="2"/>
<DockPanel>
<ContentPresenter x:Name="Icon"
Margin="4,0,6,0"
VerticalAlignment="Center"
ContentSource="Icon"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
<Path x:Name="GlyphPanel"
Margin="7,0,0,0"
Visibility="Collapsed"
VerticalAlignment="Center"
Fill="{TemplateBinding MenuItem.Foreground}"
FlowDirection="LeftToRight"
Data="{StaticResource Checkmark}"/>
<ContentPresenter ContentSource="Header"
Margin="{TemplateBinding MenuItem.Padding}"
RecognizesAccessKey="True"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
</DockPanel>
<Popup x:Name="PART_Popup"
HorizontalOffset="1"
VerticalOffset="-1"
AllowsTransparency="true"
Placement="Bottom"
IsOpen="{Binding Path=IsSubmenuOpen,RelativeSource={RelativeSource TemplatedParent}}"
Focusable="false"
PopupAnimation="{DynamicResource {x:Static SystemParameters.MenuPopupAnimationKey}}">
<theme:SystemDropShadowChrome Name="Shdw"
Color="Transparent">
<ContentControl Name="SubMenuBorder"
Template="{DynamicResource {ComponentResourceKey TypeInTargetAssembly={x:Type FrameworkElement}, ResourceId=SubmenuContent}}"
IsTabStop="false">
<ScrollViewer Name="SubMenuScrollViewer" CanContentScroll="true" MaxHeight="400"
Style="{DynamicResource {ComponentResourceKey TypeInTargetAssembly={x:Type FrameworkElement}, ResourceId=MenuScrollViewer}}">
<Grid RenderOptions.ClearTypeHint="Enabled">
<Canvas Height="0" Width="0" HorizontalAlignment="Left" VerticalAlignment="Top">
<Rectangle
Height="{Binding ElementName=SubMenuBorder,Path=ActualHeight}"
Width="{Binding ElementName=SubMenuBorder,Path=ActualWidth}"
Fill="{StaticResource SubMenuBackgroundBrush}" />
</Canvas>
<ItemsPresenter Name="ItemsPresenter" Margin="2"
KeyboardNavigation.TabNavigation="Cycle"
KeyboardNavigation.DirectionalNavigation="Cycle"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
Grid.IsSharedSizeScope="true"/>
</Grid>
</ScrollViewer>
</ContentControl>
</theme:SystemDropShadowChrome>
</Popup>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsSuspendingPopupAnimation"
Value="true">
<Setter TargetName="PART_Popup"
Property="PopupAnimation"
Value="None"/>
</Trigger>
<Trigger Property="Icon"
Value="{x:Null}">
<Setter TargetName="Icon"
Property="Visibility"
Value="Collapsed"/>
</Trigger>
<Trigger Property="IsChecked"
Value="true">
<Setter TargetName="GlyphPanel"
Property="Visibility"
Value="Visible"/>
<Setter TargetName="Icon"
Property="Visibility"
Value="Collapsed"/>
</Trigger>
<Trigger SourceName="PART_Popup"
Property="Popup.HasDropShadow"
Value="true">
<Setter TargetName="Shdw"
Property="Margin"
Value="0,0,5,5"/>
<Setter TargetName="Shdw"
Property="Color"
Value="#71000000"/>
</Trigger>
<Trigger Property="IsHighlighted"
Value="true">
<Setter TargetName="Bg"
Property="Stroke"
Value="#90717070"/>
<Setter TargetName="OuterBorder"
Property="Stroke"
Value="#50FFFFFF"/>
<Setter TargetName="InnerBorder"
Property="Stroke"
Value="#50FFFFFF"/>
</Trigger>
<Trigger Property="IsKeyboardFocused"
Value="true">
<Setter TargetName="Bg"
Property="Stroke"
Value="#E0717070"/>
<Setter TargetName="Bg"
Property="Fill"
Value="{StaticResource MenuItemPressedFill}"/>
<Setter TargetName="InnerBorder"
Property="Stroke"
Value="#50747272"/>
</Trigger>
<Trigger Property="IsSubmenuOpen"
Value="true">
<Setter TargetName="Bg"
Property="Stroke"
Value="#E0717070"/>
<Setter TargetName="Bg"
Property="Fill"
Value="{StaticResource MenuItemPressedFill}"/>
<Setter TargetName="InnerBorder"
Property="Stroke"
Value="#50747272"/>
</Trigger>
<Trigger Property="IsEnabled"
Value="false">
<Setter Property="Foreground"
Value="#FF9A9A9A"/>
<Setter TargetName="GlyphPanel"
Property="Fill"
Value="#848589"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
<!-- Submenu -->
<ControlTemplate x:Key="{ComponentResourceKey TypeInTargetAssembly={x:Type MenuItem}, ResourceId=SubmenuItemTemplateKey}"
TargetType="{x:Type MenuItem}">
<Grid SnapsToDevicePixels="true">
<Rectangle Name="Bg"
Fill="{TemplateBinding MenuItem.Background}"
Stroke="{TemplateBinding MenuItem.BorderBrush}"
StrokeThickness="1"
RadiusX="2"
RadiusY="2"/>
<Rectangle x:Name="InnerBorder"
Margin="1"
RadiusX="2"
RadiusY="2"/>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition MinWidth="24"
Width="Auto"
SharedSizeGroup="MenuItemIconColumnGroup"/>
<ColumnDefinition Width="4"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="37"/>
<ColumnDefinition Width="Auto"
SharedSizeGroup="MenuItemIGTColumnGroup"/>
<ColumnDefinition Width="17"/>
</Grid.ColumnDefinitions>
<ContentPresenter x:Name="Icon"
Margin="1"
VerticalAlignment="Center"
ContentSource="Icon"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
<Border x:Name="GlyphPanel"
Background="#E6EFF4"
BorderBrush="#CDD3E6"
BorderThickness="1"
CornerRadius="3"
Margin="1"
Visibility="Hidden"
Width="22"
Height="22">
<Path Name="Glyph"
Width="9"
Height="11"
Fill="#0C12A1"
FlowDirection="LeftToRight"
Data="{StaticResource Checkmark}"/>
</Border>
<ContentPresenter Grid.Column="2"
ContentSource="Header"
Margin="{TemplateBinding MenuItem.Padding}"
RecognizesAccessKey="True"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
<TextBlock Grid.Column="4"
Text="{TemplateBinding MenuItem.InputGestureText}"
Margin="{TemplateBinding MenuItem.Padding}"/>
</Grid>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="Icon"
Value="{x:Null}">
<Setter TargetName="Icon"
Property="Visibility"
Value="Collapsed"/>
</Trigger>
<Trigger Property="IsChecked"
Value="true">
<Setter TargetName="GlyphPanel"
Property="Visibility"
Value="Visible"/>
<Setter TargetName="Icon"
Property="Visibility"
Value="Collapsed"/>
</Trigger>
<Trigger Property="IsHighlighted"
Value="true">
<Setter TargetName="Bg"
Property="Fill"
Value="{StaticResource MenuItemSelectionFill}"/>
<Setter TargetName="Bg"
Property="Stroke"
Value="#8071CBF1"/>
<Setter TargetName="InnerBorder"
Property="Stroke"
Value="#40FFFFFF"/>
</Trigger>
<Trigger Property="IsEnabled"
Value="false">
<Setter Property="Foreground"
Value="#FF9A9A9A"/>
<Setter TargetName="GlyphPanel"
Property="Background"
Value="#EEE9E9"/>
<Setter TargetName="GlyphPanel"
Property="BorderBrush"
Value="#DBD6D6"/>
<Setter TargetName="Glyph"
Property="Fill"
Value="#848589"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
<ControlTemplate x:Key="{ComponentResourceKey TypeInTargetAssembly={x:Type MenuItem}, ResourceId=SubmenuHeaderTemplateKey}"
TargetType="{x:Type MenuItem}">
<Grid SnapsToDevicePixels="true">
<Rectangle Name="Bg"
Fill="{TemplateBinding MenuItem.Background}"
Stroke="{TemplateBinding MenuItem.BorderBrush}"
StrokeThickness="1"
RadiusX="2"
RadiusY="2"/>
<Rectangle x:Name="InnerBorder"
Margin="1"
Stroke="Transparent"
StrokeThickness="1"
RadiusX="2"
RadiusY="2"/>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition MinWidth="24"
Width="Auto"
SharedSizeGroup="MenuItemIconColumnGroup"/>
<ColumnDefinition Width="4"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="37"/>
<ColumnDefinition Width="Auto"
SharedSizeGroup="MenuItemIGTColumnGroup"/>
<ColumnDefinition Width="17"/>
</Grid.ColumnDefinitions>
<ContentPresenter x:Name="Icon"
Margin="1"
VerticalAlignment="Center"
ContentSource="Icon"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
<Border x:Name="GlyphPanel"
Background="#E6EFF4"
BorderBrush="#CDD3E6"
BorderThickness="1"
CornerRadius="3"
Margin="1"
Visibility="Hidden"
Width="22"
Height="22">
<Path Name="Glyph"
Width="9"
Height="11"
Fill="#0C12A1"
FlowDirection="LeftToRight"
Data="{StaticResource Checkmark}"/>
</Border>
<ContentPresenter Grid.Column="2"
ContentSource="Header"
Margin="{TemplateBinding MenuItem.Padding}"
RecognizesAccessKey="True"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
<TextBlock Grid.Column="4"
Text="{TemplateBinding MenuItem.InputGestureText}"
Margin="{TemplateBinding MenuItem.Padding}"
Visibility="Collapsed"/>
<Path Grid.Column="5"
VerticalAlignment="Center"
Margin="4,0,0,0"
Fill="{TemplateBinding MenuItem.Foreground}"
Data="{StaticResource RightArrow}"/>
</Grid>
<Popup x:Name="PART_Popup"
AllowsTransparency="true"
Placement="Right"
VerticalOffset="-3"
HorizontalOffset="-2"
IsOpen="{Binding Path=IsSubmenuOpen,RelativeSource={RelativeSource TemplatedParent}}"
Focusable="false"
PopupAnimation="{DynamicResource {x:Static SystemParameters.MenuPopupAnimationKey}}">
<theme:SystemDropShadowChrome Name="Shdw"
Color="Transparent">
<ContentControl Name="SubMenuBorder"
Template="{DynamicResource {ComponentResourceKey TypeInTargetAssembly={x:Type FrameworkElement}, ResourceId=SubmenuContent}}"
IsTabStop="false">
<ScrollViewer Name="SubMenuScrollViewer" CanContentScroll="true" MaxHeight="400"
Style="{DynamicResource {ComponentResourceKey TypeInTargetAssembly={x:Type FrameworkElement}, ResourceId=MenuScrollViewer}}">
<Grid RenderOptions.ClearTypeHint="Enabled">
<Canvas Height="0" Width="0" HorizontalAlignment="Left" VerticalAlignment="Top">
<Rectangle
Height="{Binding ElementName=SubMenuBorder,Path=ActualHeight}"
Width="{Binding ElementName=SubMenuBorder,Path=ActualWidth}"
Fill="{StaticResource SubMenuBackgroundBrush}" />
</Canvas>
<ItemsPresenter Name="ItemsPresenter" Margin="2"
KeyboardNavigation.TabNavigation="Cycle"
KeyboardNavigation.DirectionalNavigation="Cycle"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
Grid.IsSharedSizeScope="true"/>
</Grid>
</ScrollViewer>
</ContentControl>
</theme:SystemDropShadowChrome>
</Popup>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsSuspendingPopupAnimation"
Value="true">
<Setter TargetName="PART_Popup"
Property="PopupAnimation"
Value="None"/>
</Trigger>
<Trigger Property="IsHighlighted"
Value="true">
<Setter TargetName="InnerBorder"
Property="Stroke"
Value="#D1DBF4FF"/>
</Trigger>
<Trigger Property="Icon"
Value="{x:Null}">
<Setter TargetName="Icon"
Property="Visibility"
Value="Collapsed"/>
</Trigger>
<Trigger Property="IsChecked"
Value="true">
<Setter TargetName="GlyphPanel"
Property="Visibility"
Value="Visible"/>
<Setter TargetName="Icon"
Property="Visibility"
Value="Collapsed"/>
</Trigger>
<Trigger SourceName="PART_Popup"
Property="Popup.HasDropShadow"
Value="true">
<Setter TargetName="Shdw"
Property="Margin"
Value="0,0,5,5"/>
<Setter TargetName="Shdw"
Property="Color"
Value="#71000000"/>
</Trigger>
<Trigger Property="IsHighlighted"
Value="true">
<Setter TargetName="Bg"
Property="Fill"
Value="{StaticResource MenuItemSelectionFill}"/>
<Setter TargetName="Bg"
Property="Stroke"
Value="#8571CBF1"/>
</Trigger>
<Trigger Property="IsEnabled"
Value="false">
<Setter Property="Foreground"
Value="#FF9A9A9A"/>
<Setter TargetName="GlyphPanel"
Property="Background"
Value="#EEE9E9"/>
<Setter TargetName="GlyphPanel"
Property="BorderBrush"
Value="#DBD6D6"/>
<Setter TargetName="Glyph"
Property="Fill"
Value="#848589"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
<Style x:Key="{x:Type MenuItem}"
TargetType="{x:Type MenuItem}">
<Setter Property="HorizontalContentAlignment"
Value="{Binding Path=HorizontalContentAlignment,RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
<Setter Property="VerticalContentAlignment"
Value="{Binding Path=VerticalContentAlignment,RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
<Setter Property="Background"
Value="Transparent"/>
<Setter Property="ScrollViewer.PanningMode"
Value="Both"/>
<Setter Property="Stylus.IsFlicksEnabled"
Value="False"/>
<Setter Property="Template"
Value="{DynamicResource {ComponentResourceKey TypeInTargetAssembly={x:Type MenuItem}, ResourceId=SubmenuItemTemplateKey}}"/>
<Style.Triggers>
<Trigger Property="Role"
Value="TopLevelHeader">
<Setter Property="Padding"
Value="7,2,8,3"/>
<Setter Property="Template"
Value="{DynamicResource {ComponentResourceKey TypeInTargetAssembly={x:Type MenuItem}, ResourceId=TopLevelHeaderTemplateKey}}"/>
</Trigger>
<Trigger Property="Role"
Value="TopLevelItem">
<Setter Property="Padding"
Value="7,2,8,3"/>
<Setter Property="Template"
Value="{DynamicResource {ComponentResourceKey TypeInTargetAssembly={x:Type MenuItem}, ResourceId=TopLevelItemTemplateKey}}"/>
</Trigger>
<Trigger Property="Role"
Value="SubmenuHeader">
<Setter Property="Padding"
Value="2,3,2,3"/>
<Setter Property="Template"
Value="{DynamicResource {ComponentResourceKey TypeInTargetAssembly={x:Type MenuItem}, ResourceId=SubmenuHeaderTemplateKey}}"/>
</Trigger>
<Trigger Property="Role"
Value="SubmenuItem">
<Setter Property="Padding"
Value="2,3,2,3"/>
</Trigger>
</Style.Triggers>
</Style>
</ResourceDictionary>
It’s not pretty. I hope MS adds the ability to change the height in future versions as I would rather not write a separate extended control just for this.
Until next time…
This is a bit dated, but the question is about how you get (near) accurate processor information in Windows 2003 with WMI and no external executables.
I wrote this a long time ago for VBS and translated it into C# for my upcoming application: Astronomy. I added some snazzy XAML in there to pimp it out a bit. There is a lot of code here, but that is because a lot needs to be done to format the data into something we want to see.
The desired result:
So, let’s see all that code:
The XAML:
<Window x:Class="GetProcessCountLegacy.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="200" Width="525">
<Window.Resources>
<!-- Text Styles -->
<Style x:Key="ListHeader" TargetType="{x:Type TextBlock}">
<Setter Property="FontWeight" Value="Bold" />
</Style>
<Style x:Key="ListLabel" TargetType="{x:Type TextBlock}">
<Setter Property="FontWeight" Value="Normal" />
</Style>
<Style x:Key="ListValue" TargetType="{x:Type TextBlock}">
<Setter Property="FontWeight" Value="DemiBold" />
</Style>
<!-- Border -->
<Style x:Key="BorderStyle" TargetType="Border">
<Setter Property="BorderBrush" Value="#999" />
<Setter Property="BorderThickness" Value="1" />
<Setter Property="CornerRadius" Value="6" />
<Setter Property="Padding" Value="16,14,16,16" />
<Setter Property="Margin" Value="12,6,12,6" />
<Setter Property="Background">
<Setter.Value>
<LinearGradientBrush StartPoint="0.5, 0" EndPoint="0.5, 1" Opacity="1.0">
<GradientStop Color="#FFFFFF" Offset="0" />
<GradientStop Color="#FFFFFF" Offset="0.5" />
<GradientStop Color="#EDEDED" Offset="1" />
</LinearGradientBrush>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
<Grid>
<!-- Processor Information -->
<Border Style="{StaticResource BorderStyle}">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="28"/>
<RowDefinition Height="22"/>
<RowDefinition Height="22"/>
<RowDefinition Height="22"/>
<RowDefinition Height="22"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="120"/>
<ColumnDefinition Width="600"/>
</Grid.ColumnDefinitions>
<TextBlock Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="2"
VerticalAlignment="Top"
Text="Processor Information"
Style="{StaticResource ListHeader}" />
<TextBlock Grid.Row="1" Grid.Column="0"
Text="Description:"
Style="{StaticResource ListLabel}" />
<TextBlock Grid.Row="1" Grid.Column="1"
x:Name="txtDescription"
Style="{StaticResource ListValue}" />
<TextBlock Grid.Row="2" Grid.Column="0"
Text="Core Speed:"
Style="{StaticResource ListLabel}" />
<TextBlock Grid.Row="2" Grid.Column="1"
x:Name="txtSpeed"
Style="{StaticResource ListValue}" />
<TextBlock Grid.Row="3" Grid.Column="0"
Text="Count:"
Style="{StaticResource ListLabel}" />
<TextBlock Grid.Row="3" Grid.Column="1"
x:Name="txtCount"
Style="{StaticResource ListValue}" />
<TextBlock Grid.Row="4" Grid.Column="0"
Text="Width:"
Style="{StaticResource ListLabel}" />
<TextBlock Grid.Row="4" Grid.Column="1"
x:Name="txtWidth"
Style="{StaticResource ListValue}" />
</Grid>
</Border>
</Grid>
</Window>
C#
[Main Code]
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
#region Contructors
/// <summary>
/// Main constructor.
/// </summary>
public MainWindow()
{
// Initialize UI
InitializeComponent();
// Get processor information
GetProcessorInformation();
}
#endregion
/// <summary>
/// Retrieve the processor information and add to UI.
/// </summary>
private void GetProcessorInformation()
{
// Build an options object for the remote connection
var options = new ConnectionOptions
{
Impersonation = ImpersonationLevel.Impersonate,
EnablePrivileges = true
};
// Make a connection to a remote computer.
var ms = new ManagementScope(@"" + "." + @"rootcimv2", options);
// Query
string query = "SELECT Manufacturer, MaxClockSpeed, AddressWidth, Name, " +
"SocketDesignation, ProcessorID, UniqueID FROM Win32_Processor";
// Searcher
var searcher =
new ManagementObjectSearcher(ms, new WqlObjectQuery(query));
// Get legacy info
var processor = GetProcessorInfoLegacy(searcher);
// Processor information
// Description
txtDescription.Text = RemoveExcessSpaces(processor.Name);
if (String.IsNullOrEmpty(txtDescription.Text))
{
txtDescription.Text = "{Unknown}";
}
// Speed
txtSpeed.Text = GetProcessorSpeed(processor.Speed);
if (String.IsNullOrEmpty(txtSpeed.Text))
{
txtSpeed.Text = "{Unknown}";
}
// Count
txtCount.Text = GetProcessorCount(5.2, processor);
if (String.IsNullOrEmpty(txtCount.Text))
{
txtCount.Text = "{Unknown}";
}
// Width
txtWidth.Text = "x86-" + processor.Architecture;
if (String.IsNullOrEmpty(txtWidth.Text))
{
txtWidth.Text = "{Unknown}";
}
}
/// <summary>
/// Gets processor information for Windows version 5.x.
/// </summary>
/// <param name="searcher"></param>
/// <returns></returns>
private static ProcessorInfo GetProcessorInfoLegacy(
ManagementObjectSearcher searcher)
{
// Processor object
var processor = new ProcessorInfo();
// Descriptors
var socket = new List<string>();
var procId = new List<string>();
var uniqueId = new List<string>();
// Get data
ManagementObjectCollection colItems = searcher.Get();
try
{
// Evaluate data
foreach (ManagementBaseObject objItem in colItems)
{
// Manufacturer
if (objItem["Manufacturer"] != null)
{
processor.Manufacturer = objItem["Manufacturer"].ToString();
}
// Speed
if (objItem["MaxClockSpeed"] != null)
{
processor.Speed = Convert.ToInt32(objItem["MaxClockSpeed"]);
}
// Architecture
if (objItem["AddressWidth"] != null)
{
processor.Architecture = objItem["AddressWidth"].ToString();
}
// Socket Designation
if (objItem["SocketDesignation"] != null)
{
processor.SocketDesignation =
objItem["SocketDesignation"].ToString();
socket.Add(processor.SocketDesignation);
}
// Name
if (objItem["Name"] != null)
{
processor.Name = objItem["Name"].ToString();
}
// ProcessorID
if (objItem["ProcessorID"] != null)
{
processor.ProcessorID = objItem["ProcessorID"].ToString();
procId.Add(processor.ProcessorID);
}
else
{
procId.Add("");
}
// UniqueID
if (objItem["UniqueID"] != null)
{
processor.UniqueID = objItem["UniqueID"].ToString();
uniqueId.Add(processor.UniqueID);
}
else
{
uniqueId.Add("");
}
}
// Logical count
int totalProcCount = colItems.Count;
processor.LogicalProcessors = totalProcCount;
// Cores
GetLegacyCoreCount(socket, procId, uniqueId, ref processor);
// Get #of possible sockets
if ((processor.Cores > 0) && (processor.LogicalProcessors > 0))
{
int result = (processor.LogicalProcessors / processor.Cores);
processor.Count = result;
}
}
catch
{
}
finally
{
colItems.Dispose();
}
// return
return processor;
}
/// <summary>
/// Gets the number of processor cores for Windows version 5.x.
/// </summary>
/// <param name="socket"></param>
/// <param name="procId"></param>
/// <param name="uniqueId"></param>
/// <param name="processor"></param>
private static void GetLegacyCoreCount(List<string> socket, List<string> procId,
List<string> uniqueId, ref ProcessorInfo processor)
{
int totalProcessors = 0;
// Processor marker
// Check Socket Designation
for (int i = 0; i < socket.Count; i++)
{
// Start with the assumption this is unique.
bool isUnique = true;
// Check for Redundancies
for (int j = i + 1; j < socket.Count; j++)
{
if (socket[i] == socket[j])
{
isUnique = false;
break;
}
}
// If Redundant Unique ID's Exist
for (int j = i + 1; j < socket.Count; j++)
{
if ((uniqueId[i] != "") && (uniqueId[j] != "") &&
(uniqueId[i] != uniqueId[j]))
{
isUnique = true;
break;
}
}
// Check for NULL ProcessorID
if (procId[i].Trim() == "0000000000000000")
{
isUnique = false;
}
// Calculate Total
if (isUnique)
{
totalProcessors++;
}
}
// Get Cores
int result = (processor.LogicalProcessors / totalProcessors);
processor.Cores = result;
}
/// <summary>
/// Retrieves the Processor speed in human-readable format.
/// </summary>
/// <param name="speed"></param>
/// <returns></returns>
public static string GetProcessorSpeed(int speed)
{
string result = string.Empty;
if (speed.ToString().Length >= 4)
{
double dSpeed = Convert.ToDouble(speed) / 1000;
result = dSpeed.ToString("0.00") + " GHz";
}
else
{
result = speed.ToString() + " MHz";
}
// Return
return result;
}
/// <summary>
/// Returns the processor count in a human-readable format.
/// </summary>
/// <param name="oSver"></param>
/// <param name="proc"></param>
/// <returns></returns>
public static string GetProcessorCount(double oSver, ProcessorInfo proc)
{
string result = "";
int physical = proc.Count;
int cores = proc.Cores;
// Manufacturer
string hyper = "HyperThreading";
if (proc.Manufacturer.ToLower().IndexOf("intel") == -1)
{
hyper = "HyperTransport";
}
// Processor count
string physDesc = physical.ToString() + " processor(s)";
// Cores
string coreDesc = string.Empty;
// Current
if (oSver >= 6)
{
coreDesc = cores.ToString() + " core(s)";
if (proc.IsHyperThreaded)
{
coreDesc += " w/ HyperThreading";
}
}
// Legacy
else
{
coreDesc = cores.ToString() + " core(s)";
if ((cores / physical) == 2)
{
// Intel
if (proc.Manufacturer.ToLower().IndexOf("intel") != -1)
{
coreDesc += " (or " + physical + " core(s) w/ " + hyper + ")";
}
}
}
result = physDesc + " (" + coreDesc + ")";
// Return
return result;
}
/// <summary>
/// Removes extra spaces between words.
/// </summary>
/// <param name="procDesc"></param>
/// <returns></returns>
public static string RemoveExcessSpaces(string procDesc)
{
string result = "";
// Evaluate
string[] desc = procDesc.Split((char)32);
// Name
for (int i = 0; i < desc.Length; i++)
{
if (desc[i].Trim() != "")
{
result += desc[i] + " ";
}
}
// Return
return result;
}
}
[ProcessorInfo class]
/// <summary>
/// Information relevant to the physical processors.
/// </summary>
public class ProcessorInfo
{
#region Properties
/// <summary>
/// Win32_Processor: AddressWidth: On a 32-bit operating system, the value is 32
/// and on a 64-bit operating system it is 64.
/// </summary>
public string Architecture { get; set; }
/// <summary>
/// Win32_Processor: NumberOfCores: Number of cores for the current instance of
/// the processor.
/// </summary>
public int Cores { get; set; }
/// <summary>
/// Total processor count.
/// </summary>
public int Count { get; set; }
/// <summary>
/// Determines whether processors support Hyper-Threading or Hyper-Transport.
/// </summary>
public bool IsHyperThreaded { get; set; }
/// <summary>
/// Win32_Processor: NumberOfLogicalProcessors: Number of logical processors for
/// the current instance of the processor.
/// </summary>
public int LogicalProcessors { get; set; }
/// <summary>
/// Win32_Processor: Manufacturer: Name of the processor manufacturer.
/// </summary>
public string Manufacturer { get; set; }
/// <summary>
/// Win32_Processor: Name: Label by which the object is known.
/// </summary>
public string Name { get; set; }
/// <summary>
/// Win32_Processor: ProcessorID: Processor information that describes the
/// processor features.
/// </summary>
public string ProcessorID { get; set; }
/// <summary>
/// Win32_Processor: SocketDesignation: Type of chip socket used on the circuit.
/// </summary>
public string SocketDesignation { get; set; }
/// <summary>
/// Win32_Processor: MaxClockSpeed: Detected processor speed.
/// </summary>
public int Speed { get; set; }
/// <summary>
/// Win32_Processor: UniqueID: Globally unique identifier for the processor.
/// </summary>
public string UniqueID { get; set; }
#endregion
#region Constructors
public ProcessorInfo()
{
Architecture = "x86";
}
#endregion
}
There are a lot of places on the web that talk about this concept and it’s clear there are a few ways to create a drag and drop TextBox in WPF.
Here is what I recommend to accomplish this task:
Given:
Your TextBox name is “TextBox1”
C#
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
// Initialize UI
InitializeComponent();
// Loaded event
this.Loaded += delegate
{
TextBox1.AllowDrop = true;
TextBox1.PreviewDragEnter += TextBox1PreviewDragEnter;
TextBox1.PreviewDragOver += TextBox1PreviewDragOver;
TextBox1.Drop += TextBox1DragDrop;
};
}
/// <summary>
/// We have to override this to allow drop functionality.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void TextBox1PreviewDragOver(object sender, DragEventArgs e)
{
e.Handled = true;
}
/// <summary>
/// Evaluates the Data and performs the DragDropEffect
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void TextBox1PreviewDragEnter(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent(DataFormats.FileDrop))
{
e.Effects = DragDropEffects.Copy;
}
else
{
e.Effects = DragDropEffects.None;
}
}
/// <summary>
/// The drop activity on the textbox.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void TextBox1DragDrop(object sender, DragEventArgs e)
{
// Get data object
var dataObject = e.Data as DataObject;
// Check for file list
if (dataObject.ContainsFileDropList())
{
// Clear values
TextBox1.Text = string.Empty;
// Process file names
StringCollection fileNames = dataObject.GetFileDropList();
StringBuilder bd = new StringBuilder();
foreach (var fileName in fileNames)
{
bd.Append(fileName + "\n");
}
// Set text
TextBox1.Text = bd.ToString();
}
}
}
Now, let’s look at each event and cover what is going on:
/// <summary>
/// We have to override this to allow drop functionality.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void TextBox1PreviewDragOver(object sender, DragEventArgs e)
{
e.Handled = true;
}
We need to add this to override the default PreviewDrag behavior. If we don’t, then the Drop Event will not fire.
/// <summary>
/// Evaluates the Data and performs the DragDropEffect
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void TextBox1PreviewDragEnter(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent(DataFormats.FileDrop))
{
e.Effects = DragDropEffects.Copy;
}
else
{
e.Effects = DragDropEffects.None;
}
}
This piece deals with the source being dragged over the textbox. The data is evaluated at this point, and the DragDropEffects are executed accordingly. Notice that the data is checked for the correct type.
MSDN breaks down the DragDropEffects here.
/// <summary>
/// The drop activity on the textbox.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void TextBox1DragDrop(object sender, DragEventArgs e)
{
// Get data object
var dataObject = e.Data as DataObject;
// Check for file list
if (dataObject.ContainsFileDropList())
{
// Clear values
TextBox1.Text = string.Empty;
// Process file names
StringCollection fileNames = dataObject.GetFileDropList();
StringBuilder bd = new StringBuilder();
foreach (var fileName in fileNames)
{
bd.Append(fileName + "\n");
}
// Set text
TextBox1.Text = bd.ToString();
}
}
In the drop event, a few things occur: