Opening a new window in a Windows Application

Hello!

I am using Visual Studio 2008 Pro. I have a WPF form and a button. When the user clicks the button, I want to open another window, which is more complex than a simple messagebox - it would query a database to get data and such.

So, what do I write in the

Code:

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private void OpenTheOtherWindow_Click(object sender, RoutedEventArgs e)
        {
            //open window, please
        }

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procedure?

Surprisingly, I was not able to find anything on this topic anywhere on the net. All reference webish apps, but this is a Windows application.

Thanks!

Quote:

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Originally Posted by EVS

All reference webish apps, but this is a Windows application.

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this is not true.

http://www.google.com/search?hl=en&n...&aq=f&oq=&aqi=
http://social.msdn.microsoft.com/For...4-967a361cedd2

You need to create a new Window in your application. Then, just .Show() it when you're ready to create an instance of it.

That's all good, but the problem is that when I close the window and try to show it again, an exception is thrown saying that I cannot open a closing window. If I override the onclosing function and hide the window instead of closing it, the program wouldn't shut down, when I close the main window, because the other window has never been closed.... creating a new instance of the window object every time when I want to show it, wouldn't cut it as well, because then I cannot reference the window object from the main window as it is local to that button_click function.

I am using WPF.

it's not easy to help you without seeing your masterpiece :D (you should already know that). so, what about posting some code?

Assuming you want a modal dialog type of window, it's pretty simple if you use ShowDialog.

To make this even simpler when invoking the dialog, I typically create a static factory method. The code below shows an About dialog (which is a WPF window).

Code:

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publicpartialclassAboutDlg : Window
{
  publicstaticbool? ShowDialog( Window owner )
  {
    AboutDlg dlg = newAboutDlg( owner );
    return dlg.ShowDialog( );
  }

  private AboutDlg( Window owner )
  {
    InitializeComponent( );
    Owner = owner;
  }
 
  // other code here
}

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The from another window, I call it like this:

Code:

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privatevoid OnHelpAbout( object sender, RoutedEventArgs e )
{
  AboutDlg.ShowDialog( this );
}

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If you need to do something differently, then post your code so we can help you with it.

I'd like to have a window that would have a matrix which would be updated with data from an underlying database.

Quote:

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Originally Posted by EVS

I'd like to have a window that would have a matrix which would be updated with data from an underlying database.

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We got that part. The question remains if whether you are looking for a modal dialog approach (as I've given you) or something else. What the window (or form) contains is irrelevent at this point if you are having trouble getting the window to display.