C# Take ScreenShot of .net control within application and attach to Outlook Email [duplicate]

Answer 1

Slight modification of Killercam's answer:

    public static Bitmap takeComponentScreenShot(Control control)
    {
        // find absolute position of the control in the screen.
        Control ctrl  = control;
        Rectangle rect = new Rectangle(Point.Empty, ctrl.Size);
        do
        {
            rect.Offset(ctrl.Location);
            ctrl = ctrl.Parent;
        }
        while (ctrl != null);

        Bitmap bmp = new Bitmap(rect.Width, rect.Height, PixelFormat.Format32bppArgb);
        Graphics g = Graphics.FromImage(bmp);

        g.CopyFromScreen(rect.Left, rect.Top, 0, 0, bmp.Size, CopyPixelOperation.SourceCopy);

        return bmp;
    }

This method will take screenshot immediately. For example, if you change visibility of a button within the panel just before calling this function, the bitmap will contain the button. If this is not desired, use keyboardP's answer.