[Mono-winforms-list] MessageBox

[Paul]

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Hi,

I'm trying to get the following code to work. It will compile, but when
I run it, I get the following error

Unhandled Exception: System.InvalidOperationException: Already visible
forms cannot be displayed as a modal dialog. Set the Visible property to
'false' prior to calling Form.ShowDialog.
in <0x0008d> System.Windows.Forms.Form:ShowDialog
(System.Windows.Forms.IWin32Window)
in <0x00058> (wrapper remoting-invoke-with-check)
System.Windows.Forms.Form:ShowDialog (System.Windows.Forms.IWin32Window)
in <0x00012> System.Windows.Forms.Form:ShowDialog ()
in <0x0004b> (wrapper remoting-invoke-with-check)
System.Windows.Forms.Form:ShowDialog ()
in <0x00038> MessageBoxForm:RunDialog ()
in <0x0004b> (wrapper remoting-invoke-with-check)
MessageBoxForm:RunDialog ()
in <0x00040> System.Windows.Forms.MessageBox:Show (string,string)
in <0x00142> PointTest.PointTest:Main (string[])

The code is this

using System;
using System.Windows.Forms

namespace PointTest
{
   public class Point
   {
      private int x, y;
      public Point()
      {
      }
      public Point( int xValue, int yValue )
      {
         X =3D xValue;
         Y =3D yValue;
      }
      public int X
      {
         get
         {
            return x;
         }
         set
         {
            x =3D value; // no need for validation
         }
      }
      public int Y
      {
         get
         {
            return y;
         }        =20
         set
         {
            y =3D value; // no need for validation
         }
      }
      public override string ToString()
      {
         return "[" + x + ", " + y + "]";
      }
   }

   class PointTest
   {
      static void Main( string[] args )
      {
         Point point =3D new Point( 72, 115 );
         string output =3D "X coordinate is " + point.X +
            "\n" + "Y coordinate is " + point.Y;
         point.X =3D 10; // set x-coordinate via X property
         point.Y =3D 10; // set y-coordinate via Y property
         output +=3D "\n\nThe new location of point is " + point;
         MessageBox.Show( output, "Demonstrating Class Point" );
      }
   }
}

mcs PointTest.cs -r:System.Windows.Forms

Is this a problem with MessageBox or something else?

TTFN

Paul
--=20
"Trust me, I know what I'm doing" - Det. Sledgehammer

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