Updated: February 2009
Represents a selectable item inside a Menu.
(in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
Visual Basic (Declaration)
<StyleTypedPropertyAttribute(Property := "ItemContainerStyle", StyleTargetType := GetType(MenuItem))> _
<LocalizabilityAttribute(LocalizationCategory.Menu)> _
<TemplatePartAttribute(Name := "PART_Popup", Type := GetType(Popup))> _
Public Class MenuItem _
Inherits HeaderedItemsControl _
Implements ICommandSource
[StyleTypedPropertyAttribute(Property = "ItemContainerStyle", StyleTargetType = typeof(MenuItem))]
[LocalizabilityAttribute(LocalizationCategory.Menu)]
[TemplatePartAttribute(Name = "PART_Popup", Type = typeof(Popup))]
public class MenuItem : HeaderedItemsControl, ICommandSource
[StyleTypedPropertyAttribute(Property = L"ItemContainerStyle", StyleTargetType = typeof(MenuItem))]
[LocalizabilityAttribute(LocalizationCategory::Menu)]
[TemplatePartAttribute(Name = L"PART_Popup", Type = typeof(Popup))]
public ref class MenuItem : public HeaderedItemsControl,
ICommandSource
public class MenuItem extends HeaderedItemsControl implements ICommandSource
XAML Object Element Usage
<MenuItem>
Items
</MenuItem>
Content Model: MenuItem is a HeaderedItemsControl. Its content properties are Items and ItemsSource and its header property is Header. For more information on the content model for MenuItem, see Controls Content Model Overview.
A MenuItem can have submenus. The submenu of the MenuItem is made up of the objects within the ItemCollection of a MenuItem. It is common for a MenuItem to contain other MenuItem objects to create nested submenus.
A MenuItem can have one of several functions:
It can be selected to invoke a command.
It can be a separator for other menu items.
It can be a header for a submenu.
It can be checked or unchecked.
The MenuItem handles the MouseDown event, so if you attach an event handler to MouseDown, your handler will never be called. To add your own handler, subscribe to the PreviewMouseDown event or subscribe to MouseDown by calling AddHandler(RoutedEvent, Delegate, Boolean) with handledEventsToo set to true.
Dependency properties for this control might be set by the control’s default style. If a property is set by a default style, the property might change from its default value when the control appears in the application. The default style is determined by which desktop theme is used when the application is running. For more information, see Themes.
The following example creates a Menu to manipulate text in a TextBox. The Menu contains MenuItem objects that use the Command, IsCheckable, and Header properties and the Checked, Unchecked, and Click events.
<Menu>
<MenuItem Header="_Edit">
<MenuItem Command="ApplicationCommands.Copy"/>
<MenuItem Command="ApplicationCommands.Cut"/>
<MenuItem Command="ApplicationCommands.Paste"/>
</MenuItem>
<MenuItem Header="_Font">
<MenuItem Header="_Bold" IsCheckable="True"
Checked="Bold_Checked"
Unchecked="Bold_Unchecked"/>
<MenuItem Header="_Italic" IsCheckable="True"
Checked="Italic_Checked"
Unchecked="Italic_Unchecked"/>
<Separator/>
<MenuItem Header="I_ncrease Font Size"
Click="IncreaseFont_Click"/>
<MenuItem Header="_Decrease Font Size"
Click="DecreaseFont_Click"/>
</MenuItem>
</Menu>
<TextBox Name="textBox1" TextWrapping="Wrap"
Margin="2">
The quick brown fox jumps over the lazy dog.
</TextBox>
Private Sub Bold_Checked(ByVal sender As Object, ByVal e As RoutedEventArgs)
textBox1.FontWeight = FontWeights.Bold
End Sub
Private Sub Bold_Unchecked(ByVal sender As Object, ByVal e As RoutedEventArgs)
textBox1.FontWeight = FontWeights.Normal
End Sub
Private Sub Italic_Checked(ByVal sender As Object, ByVal e As RoutedEventArgs)
textBox1.FontStyle = FontStyles.Italic
End Sub
Private Sub Italic_Unchecked(ByVal sender As Object, ByVal e As RoutedEventArgs)
textBox1.FontStyle = FontStyles.Normal
End Sub
Private Sub IncreaseFont_Click(ByVal sender As Object, ByVal e As RoutedEventArgs)
If textBox1.FontSize < 18 Then
textBox1.FontSize += 2
End If
End Sub
Private Sub DecreaseFont_Click(ByVal sender As Object, ByVal e As RoutedEventArgs)
If textBox1.FontSize > 10 Then
textBox1.FontSize -= 2
End If
End Sub
private void Bold_Checked(object sender, RoutedEventArgs e)
{
textBox1.FontWeight = FontWeights.Bold;
}
private void Bold_Unchecked(object sender, RoutedEventArgs e)
{
textBox1.FontWeight = FontWeights.Normal;
}
private void Italic_Checked(object sender, RoutedEventArgs e)
{
textBox1.FontStyle = FontStyles.Italic;
}
private void Italic_Unchecked(object sender, RoutedEventArgs e)
{
textBox1.FontStyle = FontStyles.Normal;
}
private void IncreaseFont_Click(object sender, RoutedEventArgs e)
{
if (textBox1.FontSize < 18)
{
textBox1.FontSize += 2;
}
}
private void DecreaseFont_Click(object sender, RoutedEventArgs e)
{
if (textBox1.FontSize > 10)
{
textBox1.FontSize -= 2;
}
}
System..::.Object
System.Windows.Threading..::.DispatcherObject
System.Windows..::.DependencyObject
System.Windows.Media..::.Visual
System.Windows..::.UIElement
System.Windows..::.FrameworkElement
System.Windows.Controls..::.Control
System.Windows.Controls..::.ItemsControl
System.Windows.Controls..::.HeaderedItemsControl
System.Windows.Controls..::.MenuItem
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
.NET Framework
Supported in: 3.5, 3.0
Reference
Date | History | Reason |
|---|
February 2009
| Described how default styles change dependency properties. |
Customer feedback.
|