Binding the visiblity of context menu item with gridview

[Zhiyong]

May I ask how to bind the visiblity of context menu item with the number of selected items (such as single or multiple), or some property of the selected rows.

Thanks!
Joe

[Maya]

Hi Zhiyong,

You can handle the Opened event of the RadContextMenu and apply the logic you need. In case you want to bind the Visibility of a certain item to the SelectionMode of the grid, you can do as follows:

void rowContextMenu_Opened(object sender, RoutedEventArgs e)
{
    RadContextMenu menu = sender as RadContextMenu;
    var clickedRow = menu.GetClickedElement<GridViewRow>();

    if(this.clubsGrid.SelectionMode == System.Windows.Controls.SelectionMode.Single)
    {
        RadMenuItem item = menu.Items[1] as RadMenuItem;
        item.Visibility = System.Windows.Visibility.Collapsed;
    }
}

In case you require to bind the Visibility to some property of the clicked row, you may code it like:

oid rowContextMenu_Opened(object sender, RoutedEventArgs e)
{
    RadContextMenu menu = sender as RadContextMenu;
    var clickedRow = menu.GetClickedElement<GridViewRow>();

    Club club = clickedRow.Item as Club;
    if (club != null && club.Name == "Arsenal")
    {
        RadMenuItem item = menu.Items[1] as RadMenuItem;
        item.Visibility = System.Windows.Visibility.Collapsed;
    }
}

All the best,
Maya
the Telerik team

[Zhiyong]

Thanks a lot! It solves the problem.

Best,
zhiyong