Drawing a transparent button

Question

I\'m trying to create a transparent button in C# (.NET 3.5 SP1) to use in my WinForms application. I\'ve tried everything to get the button to be transparent (it should show

Answer 1

I know this question is old, but if someone doesn't want to create a control to do this I came up with this code from a different article and changed it an extension method.

public static void ToTransparent(this System.Windows.Forms.Button Button,
     System.Drawing.Color TransparentColor)
{
    Bitmap bmp = ((Bitmap)Button.Image);
    bmp.MakeTransparent(TransparentColor);
    int x = (Button.Width - bmp.Width) / 2;
    int y = (Button.Height - bmp.Height) / 2;
    Graphics gr = Button.CreateGraphics();
    gr.DrawImage(bmp, x, y);
}

And the call like:

buttonUpdate.ToTransparent(Color.Magenta);