Problem with dialog box running twice

Hello all.

I am having trouble to figure out a problem with a dialog box.

I show the dlg from the main menu like this.

 private void MenuItem_Click(object sender, RoutedEventArgs e)
        {
            DialogRender dlg = new DialogRender();
            dlg.Owner = this;
            dlg.ShowDialog();

         //from here on the code is not implemented yet

        }

The code in the DialogRender.xaml file is :

<Button x:Name="okButton" DockPanel.Dock="Left"  Click="okButton_Click" Width="40" Height="25">OK</Button>
<Button x:Name="cancelButton"  DockPanel.Dock="Left" IsCancel="True" Width="40" Height="25" Click="cancelButton_Click">Cancel</Button>

and the code for the buttons are :

        {
            this.DialogResult = true;
         }
 private void cancelButton_Click(object sender, RoutedEventArgs e)
        {

   this.DialogResult = false;
        }

The problem is that when the Ok or Cancel button is pressed it recreates the dialog box entering a second time in the 

 DialogRender dlg = new DialogRender();
            dlg.Owner = this;
            dlg.ShowDialog();

It means that I always have to press OK or cancel two times to close the dialog box.

Any ideas.

TIA.

Jair Santos

Jair Santos