如何在按下鼠标按钮时创建ContextMenu

Question

I made a code for a DataGrid that fire the right mouse button event, in particular:

private void Squadre_DataGrid_MouseClick(object sender, MouseEventArgs e)
    {
        if (e.RightButton == MouseButtonState.Pressed)
        {
            //Context menu

        }
    }

I want create a ContextMenu inside the condition, and associate for each item of the ContextMenu a method that will be executed if the item will be choose. How to do this?

Answer 1

Perhaps you can achieve that in XAML. Assuming you want to have a context menu for the rows of your DataGrid, you can add the ContextMenu property to your DataGridRow, for example:

<DataGrid>
    <DataGrid.RowStyle>
        <Style TargetType="DataGridRow">
            <Setter Property="ContextMenu" Value="{StaticResource theContextMenu}" />
        </Style>
    </DataGrid.RowStyle>
</DataGrid>

Then add the context menu itself in the resource dictionary:

<Window.Resources>
    <ResourceDictionary>
        <ContextMenu x:Key="theContextMenu">
            <MenuItem Header="Menu Item 1" Click="menuItem1_Click">
            </MenuItem>
            <MenuItem Header="Menu Item 2" Click="menuItem2_Click">
            </MenuItem>
        </ContextMenu>
    </ResourceDictionary>
</Window.Resources>

Then write a click event handler for each menu item to execute your method:

private void menuItem1_Click(object sender, RoutedEventArgs e)
{
    // execute your method..
}

private void menuItem2_Click(object sender, RoutedEventArgs e)
{
    // execute your method..
}

Answer 2

You could bind datacontext content to a propertie and than fill It (propertie) in your Button event. Don't forget to set Update condition in Contextmenu binding (xaml)

Answer 3

In my view the best form of work this out is adding an ContextMenu for each row of DataGrid , we can do it in the following way:

In the XAML , place in your DataGrid an listener to event LoadingRow :

<!-- resume version of declaration your DataGrid -->
<DataGrid x:Name="Squadre_DataGrid" LoadingRow="Squadre_DataGrid_LoadingRow" />

In the CodeBehind , come on add the ContextMenu for each row:

private void Squadre_DataGrid_LoadingRow(object sender, DataGridRowEventArgs e)
{
      ContextMenu _contextMenu = new ContextMenu();
      MenuItem mia = new MenuItem();//item 1
      MenuItem mib = new MenuItem();//item 2
      ....
      _contextMenu.Add(mia);
      _contextMenu.Add(mib);
      ....
      e.Row.ContextMenu = _contextMenu;//add context menu to row
}