我能够检查菜单项，但无法取消选中，并且更多地显示之前在菜单项中的检查。一旦我单击另一个菜单项，它不会取消选中前一个菜单项。我正在从代码中添加菜单项。
private void OnMenuItemClick(object sender, RoutedEventArgs e)
{
RoutedEventArgs args = e as RoutedEventArgs;
MenuItem item = args.OriginalSource as MenuItem;
string header = item.Header.ToString();
if (header == "B1")
{
btnMenu.Content = header;
item.IsChecked=true;
}
else if (header == "A1")
{
btnMenu.Content = header;
item.IsChecked=true;
}
}
我正在为 4 个按钮应用相同的菜单项及其事件处理程序。因此，如果我为第一个按钮选择一个菜单项，它将显示对菜单项的检查，当我单击第二个按钮时会显示选中的菜单项。我该如何实现？ ..任何建议。
编辑：xml
<StackPanel Grid.Row="11" Orientation="Horizontal" FlowDirection="LeftToRight">
<Button Name="btnPhone" Content="Mobile" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="0 0 12 0" Width="85" Click="OnbtnPhoneClick"></Button>
<Button HorizontalAlignment="Left" Name="ddBtnPhone" VerticalAlignment="Top" Width="25" Click="OnddBtnPhoneClick" >
<Button.Content>
<Path x:Name="btnArrow1" Margin="4" VerticalAlignment="Center" Width="10" Fill="#FF527DB5" Stretch="Uniform" HorizontalAlignment="Right" Data="F1 M 301.14,-189.041L 311.57,-189.041L 306.355,-182.942L 301.14,-189.041 Z "/>
</Button.Content>
<Button.ContextMenu>
<ContextMenu x:Name="cmPhone">
</ContextMenu>
</Button.ContextMenu>
</Button>
</StackPanel>
<StackPanel Grid.Row="12" Orientation="Horizontal" FlowDirection="LeftToRight">
<Button Name="btnHome" Content="Business" HorizontalAlignment="Left" Margin="0,0,12,5" Width="85" Click="OnbtnHomeClick" />
<!--<extToolkit:DropDownButton x:Name="ddBtnHome" VerticalAlignment="Top" Width="30" HorizontalAlignment="Right" Margin="0 0 30 0" Height="20"/>-->
<Button HorizontalAlignment="Left" Name="ddBtnHome" VerticalAlignment="Bottom" Width="25" Click="OnddBtnHomeClick" Margin="0,0,0,5" >
<Button.Content>
<Path x:Name="btnArrow2" Margin="4" VerticalAlignment="Center" Width="10" Fill="#FF527DB5" Stretch="Uniform" HorizontalAlignment="Right" Data="F1 M 301.14,-189.041L 311.57,-189.041L 306.355,-182.942L 301.14,-189.041 Z "/>
</Button.Content>
<Button.ContextMenu>
<ContextMenu Name="cmHome">
</ContextMenu>
</Button.ContextMenu>
</Button>
</StackPanel>
<StackPanel Grid.Row="13" Orientation="Horizontal" FlowDirection="LeftToRight">
<Button Name="btnMobile" Content="Home" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="0 0 12 0" Width="85" Click="OnbtnMobileClick"></Button>
<!--<extToolkit:DropDownButton x:Name="ddBtnMobile" VerticalAlignment="Top" Width="30" HorizontalAlignment="Right" Margin="0 0 30 0" Height="20"/>-->
<Button HorizontalAlignment="Left" Name="ddBtnMobile" Width="25" Click="OnddBtnMobileClick" Margin="0,0,0,5" >
<Button.Content>
<Path x:Name="btnArrow3" Margin="4" VerticalAlignment="Center" Width="10" Fill="#FF527DB5" Stretch="Uniform" HorizontalAlignment="Right" Data="F1 M 301.14,-189.041L 311.57,-189.041L 306.355,-182.942L 301.14,-189.041 Z "/>
</Button.Content>
<Button.ContextMenu>
<ContextMenu Name="cmMobile">
</ContextMenu>
</Button.ContextMenu>
</Button>
</StackPanel>
<StackPanel Grid.Row="14" Orientation="Horizontal" FlowDirection="LeftToRight">
<Button Name="btnFAX" Content="Business FAX" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="0 0 12 0" Width="85" Click="OnbtnFAXClick"></Button>
<!--<extToolkit:DropDownButton x:Name="ddBtnFAX" VerticalAlignment="Top" Width="30" HorizontalAlignment="Right" Margin="0 0 30 0" Height="20"/>-->
<Button HorizontalAlignment="Left" Name="ddBtnFAX" VerticalAlignment="Bottom" Width="25" Click="OnddBtnFAXClick" Margin="0,0,0,5" >
<Button.Content>
<Path x:Name="btnArrow4" Margin="4" VerticalAlignment="Center" Width="10" Fill="#FF527DB5" Stretch="Uniform" HorizontalAlignment="Right" Data="F1 M 301.14,-189.041L 311.57,-189.041L 306.355,-182.942L 301.14,-189.041 Z "/>
</Button.Content>
<Button.ContextMenu>
<ContextMenu Name="cmFAX">
</ContextMenu>
</Button.ContextMenu>
</Button>
</StackPanel>
这就是我为每个 contextMenu 添加菜单项的方式。
private void AddMenuItems(ContextMenu cMenu, Button btnName)
{
if (cMenu.Items.Count == 0)
{
mnItem = new MenuItem();
mnItem.Header = "B1";
cMenu.Items.Add(mnItem);
mnItem = new MenuItem();
mnItem.Header = "A1";
cMenu.Items.Add(mnItem);
mnItem = new MenuItem();
mnItem.Header = "B2";
cMenu.Items.Add(mnItem);
mnItem = new MenuItem();
mnItem.Header = "A2";
cMenu.Items.Add(mnItem);
cMenu.AddHandler(MenuItem.ClickEvent, new RoutedEventHandler(OnMenuItemClick));
cMenu.AddHandler(MenuItem.MouseLeftButtonUpEvent, new MouseButtonEventHandler(OnMouseButtonUpEventClick));
btnCommon = btnName;
}