ContextMenu和wpf usercontrol存在问题。我写了一个用户控件,这个用户控件有一个windowsformhost,我想用wpf上下文菜单来处理windows控件的右键按钮contextmenu。ContextMenu ItemsSource绑定问题
所以我发送消息给wpf用户控件调用contextMenu.IsOpen = true,并且我填充contextMenu.ItemsSourceProperty绑定。但是当我调用contextmenu.IsOpen = true时,contextMenu.Items.Count == 0,我该如何解决这个问题?
这里是我的代码:
<UserControl x:Class="ControlEase.Inspec.Drawing.CanvasEditorView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:ControlEase.Inspec.Drawing"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="300">
<UserControl.Resources>
<Style TargetType="{x:Type MenuItem}">
<Setter Property="Header" Value="{Binding Name}"/>
<Setter Property="Command" Value="{Binding Command}"/>
</Style>
<ContextMenu x:Key="graphicsMenu" ItemsSource="{Binding Commands}"/>
</UserControl.Resources>
<UserControl.ContextMenu>
<ContextMenu ContextMenu="{StaticResource graphicsMenu}"/>
</UserControl.ContextMenu>
<Grid>
<local:InitializedUserControl local:LoaderHelper.InitializedCommand="{Binding OpenCommand}" >
<WindowsFormsHost x:Name="windowsHost" local:CanvasContainerExtensions.Canvas="{Binding Model}"/>
<EventCommander.Mappings>
<CommandEvent Event="GotFocus" Command="{Binding ActiveCommand}"/>
<CommandEvent Event="LostFocus" Command="{Binding DeActiveCommand}"/>
</EventCommander.Mappings>
</local:InitializedUserControl>
</Grid>
当我在xaml.cs得到的消息,我叫ContextMenu.IsOpen =真。 ContextMenu!= null,但ContextMenu.Itmes.Count == 0,并且在输出板中没有绑定错误。请帮忙。