Picturebox getting big red X but I can't detect or fix it

In the end, I wrapped EVERYTHING in in the Handle_New_Frame in an invoke. It completely removed the big red X issue, permanently. >_>

private void Handle_New_Frame(object sender, NewFrameEventArgs eventArgs)
{
  this.Invoke((MethodInvoker)delegate
  {
    try
    {
        if (bitmap != null)
        {
            bitmap.Dispose(); //Without this, memory goes nuts
        }

        bitmap = new Bitmap(eventArgs.Frame);
    }
    catch { }

    //Draw some stuff on the images
    bitmap = AdjustBrightness(bitmap, brightnessMeter);
    bitmap = ApplyContrast(contrastMeter, bitmap);
    bitmap = Draw_Top_Line(bitmap);
    bitmap = Draw_Bottom_Line(bitmap);

    //Set the image into the picturebox
    this.Invoke((MethodInvoker)delegate
    {
        videoPictureBox1.Image = bitmap;
        frameRate++; //Keep track of the frame rate
    });

    GC.Collect(); //Without this, memory goes nuts
  });
}

Shawn Hargreaves has an excellent, concise writeup of the "big red X of doom". I found it very helpful in the general case of dealing with WinForm components suddenly showing the red "X".

In summary:

• This is caused by a control throwing an exception out of the OnPaint event.
• Once it is thrown, that control will continue to show the red X and skip firing OnPaint.
• To debug, set the debugger to catch Common Language Runtime Exceptions, and then do whatever you normally do to get the red X. The debugger will stop right where it is happening, allowing you to investigate and hopefully figure out a way to prevent it.