Why does not the ContextMenu(popup menu) show up?

Question

The following class derives from System.Windows.Controls.UserControl. In said class I call OpenFileDialog to open a XAML file (workflow file). Next, I implement a dynamic menu when right clicking the mouse. The menu does not show up. Is this a threading problem or a UI problem? In my research I've been unable to discover a solution.

Thanks in advance.

private void File_Open_Click(object sender, RoutedEventArgs e)
{
    var fileDialog = new OpenFileDialog();

    fileDialog.Title  = "Open Workflow";
    fileDialog.Filter = "Workflow| *.xaml";

    if (fileDialog.ShowDialog() == DialogResult.OK)
    {
        LoadWorkflow(fileDialog.FileName);
        MouseDown += new System.Windows.Input.MouseButtonEventHandler(mouseClickedResponse);
     }
}

private void mouseClickedResponse(object sender, System.Windows.Input.MouseEventArgs e)
{
    if (e.RightButton == MouseButtonState.Pressed)
    {
         LoadMenuItems();
    }
}

private void LoadMenuItems()
{
    System.Windows.Controls.ContextMenu contextmenu = new System.Windows.Controls.ContextMenu();   
    System.Windows.Controls.MenuItem item1 = new System.Windows.Controls.MenuItem();
    item1.Header = "A new Test";
    contextmenu.Items.Add(item1);
    this.ContextMenu = contextmenu;
    this.ContextMenu.Visibility = Visibility.Visible;
}

Solution

Came across this problem myself, I used this:

ContextMenu.IsOpen = true;

MSDN Documentation on ContextMenu

Comments

[user1298925]

The problem is that my contextMenu does not have a Show method? I don't know why.

[user1298925]

thanks for your reply. But in my case this.ContextMenu does not have a Show method. I get red line under the "Show" and it does not compile. I am however using system.Windows.Controls in my code. Could it be I need to be using a different assembly or a diffferent version?

[user1298925]

I also tried your solution it dd not work probably one reason would be that I can't use this line of your code :this.ContextMenu.Show(this, e.Location); I am open for suggestions, thanks again

[flix]

Sorry, I just recognized that you are using Windows Presentation Foundation, not Windows Forms. The WPF ContextMenu doesn't have a Show method. I'm not familiar with WPF, but this http://wpftutorial.net/ContextMenu.html could help you. And this ContextMenu is the correct documentation page for your class.