C# 如何在gridCell中使用上下文菜单?
我有这样一个CustomControl:C# 如何在gridCell中使用上下文菜单?,c#,wpf,contextmenu,C#,Wpf,Contextmenu,我有这样一个CustomControl: <Button Name="b" Height="20" Click="b_Click" Content="operation" Width="60"> <Button.ContextMenu> <ContextMenu> <MenuItem Header="Copy"></MenuItem>
<Button Name="b" Height="20" Click="b_Click" Content="operation" Width="60">
<Button.ContextMenu>
<ContextMenu>
<MenuItem Header="Copy"></MenuItem>
<MenuItem Header="cut"></MenuItem>
<MenuItem Header="delete"></MenuItem>
</ContextMenu>
</Button.ContextMenu>
</Button>
我在DataGrid单元格中使用我的控件…当我点击我的按钮时,我在这行中得到一个错误
b.ContextMenu.IsOpen = true;
“ContextMenu”不能具有逻辑或可视父级
我怎样才能解决这个erorr呢?一个工作应用程序的示例,希望这能给你提供必要的线索
<DataGrid Margin="0,0,195,72" x:Name="A">
<DataGrid.Resources>
<ContextMenu x:Key="ContextMenu">
<MenuItem Header="Copy" Click="MenuItem_Click"></MenuItem>
<MenuItem Header="cut" Click="MenuItem_Click"></MenuItem>
<MenuItem Header="delete" Click="MenuItem_Click"></MenuItem>
</ContextMenu>
</DataGrid.Resources>
<DataGrid.CellStyle>
<Style TargetType="{x:Type DataGridCell}">
<Setter Property="ContextMenu" Value="{StaticResource ContextMenu}">
</Setter>
</Style>
</DataGrid.CellStyle>
<DataGrid.Columns>
<DataGridTextColumn Header="A" Binding="{Binding}">
</DataGridTextColumn>
</DataGrid.Columns>
</DataGrid>
为什么这样做:b.ContextMenu.PlacementTarget=b;b、 ContextMenu.Placement=System.Windows.Controls.Primitives.PlacementMode.Bottom;SetPlacement(b,System.Windows.Controls.Primitives.PlacementMode.Bottom);
<DataGrid Margin="0,0,195,72" x:Name="A">
<DataGrid.Resources>
<ContextMenu x:Key="ContextMenu">
<MenuItem Header="Copy" Click="MenuItem_Click"></MenuItem>
<MenuItem Header="cut" Click="MenuItem_Click"></MenuItem>
<MenuItem Header="delete" Click="MenuItem_Click"></MenuItem>
</ContextMenu>
</DataGrid.Resources>
<DataGrid.CellStyle>
<Style TargetType="{x:Type DataGridCell}">
<Setter Property="ContextMenu" Value="{StaticResource ContextMenu}">
</Setter>
</Style>
</DataGrid.CellStyle>
<DataGrid.Columns>
<DataGridTextColumn Header="A" Binding="{Binding}">
</DataGridTextColumn>
</DataGrid.Columns>
</DataGrid>