I just want to add ContextMenu for several objects that I create dynamically, but The only way I found is to create ContextMenu in runtime开发者_如何学Go like this:
ContextMenu pMenu = new ContextMenu();
MenuItem item1 = new MenuItem();
MenuItem item2 = new MenuItem();
//I have about 10 items
//...
item1.Header = "item1";
item1.Click += new RoutedEventHandler(item1_Click);
pMenu.Items.Add(item1);
item2.Header = "item2";
item2.Click += new RoutedEventHandler(item2_Click);
pMenu.Items.Add(item2);
//and so on
It works, however, in WinForms I was able to drop ContextMenuStrip component to my form and define items and events very quickly w/o writing any code. Is it possible in WPF?
You can define your ContextMenu
in resources and bind it to any control you needed. Check this out:
<Window x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Window.Resources>
<ContextMenu x:Key="MyContextMenu">
<MenuItem Header="Send" />
</ContextMenu>
</Window.Resources>
<Grid>
<Button Name="a_button"
ContextMenu="{StaticResource MyContextMenu}" >
</Button>
</Grid>
</Window>
Additionaly you can put commands on the menuItem...
Like this:
<MenuItem Header="MyContextMenuItem
Command="{Binding Path=MyCommand}"
CommandTarget="{Binding
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type DataGrid}}}">
CommandTarget can be very important, if you use your contextMenu on different controls. I often use the FindAncestor here, to identify the caller.
The following code works for me, InsertQuery/DeleteQuery are two ICommand methods defined in ViewModel.
<DataGrid.ContextMenu>
<ContextMenu>
<MenuItem Header="Insert"
Command="{Binding DataContext.InsertQuery, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=ContextMenu}}"/>
<MenuItem Header="Delete"
Command="{Binding DataContext.DeleteQuery, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=ContextMenu}}"/>
</ContextMenu>
</DataGrid.ContextMenu>
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