How to add nested MenuItem dynamically

How to add sub items to "Second Item" dynamically

In xaml file

<Grid.ContextMenu>

<ContextMenu Opened="OnContextMenuOpened"> // Initialize context menu event

<MenuItem Header="First Item" Click="OnClickFirstItem"/>

<MenuItem Header="Second Item" />

</ContextMenu>

</Grid.ContextMenu>

In xaml.cs file

private void OnContextMenuOpened(object sender, RoutedEventArgs e)

{

try

{

ContextMenu menu = sender as ContextMenu;

if (menu != null)

{

foreach (MenuItem item in menu.Items)

{

if (item.Header == null)

continue;

if (item.Header.ToString() == "Second Item")

{

item.Items.Clear();

foreach (string strHeader in stringArray)

{

MenuItem item= new MenuItem();

item.Header = strHeader;

item.Click += new RoutedEventHandler(OnClickItem);

item.Items.Add(item);

}

}

}

}

}

catch (System.Exception ex)

{

System.Diagnostics.Debug.WriteLine(ex.ToString());

}

}