/// <summary>
/// Shows the given child window on the given container in an asynchronous way.
/// </summary>
/// <param name="window">The owning window with a container of the child window.</param>
/// <param name="dialog">A child window instance.</param>
/// <param name="container">The container.</param>
/// <returns></returns>
/// <exception cref="System.InvalidOperationException">
/// The provided child window can not add, there is no container defined.
/// or
/// The provided child window is already visible in the specified window.
/// </exception>
public static Task <TResult> ShowChildWindowAsync <TResult>(
this Window window,
ChildWindow dialog,
Panel container)
{
window.Dispatcher.VerifyAccess();
if (container == null)
{
throw new InvalidOperationException("The provided child window can not add, there is no container defined.");
}
if (container.Children.Contains(dialog))
{
throw new InvalidOperationException("The provided child window is already visible in the specified window.");
}
return(ShowChildWindowInternalAsync <TResult>(dialog, container));
}
private static Task AddDialogToContainerAsync(
ChildWindow dialog,
Panel container)
{
return(Task.Factory.StartNew(() => dialog.Dispatcher.Invoke(new Action(() => container.Children.Add(dialog)))));
}