From MSDN, and seen other places as well.
Here's my attempt at it: Show me the time in IMAGE format

ASP.NET: Create Snazzy Web Charts and Graphics On the Fly with the .NET Framework -- MSDN Magazine, February 2002

	int width = 400;

	int height = 40;

	Bitmap bm = new Bitmap(width, height);

	Graphics gr = Graphics.FromImage(bm);



	gr.FillRectangle(new SolidBrush(Color.Teal), 0, 0, width, height);



	Font fontBanner = new Font("Verdana", 16, FontStyle.Bold );

	gr.DrawString( strInput, fontBanner, new SolidBrush( Color.White ), 

		new Rectangle( 0, 0, width, height ) );



	Response.ContentType = "image/jpeg";

	bm.Save( Response.OutputStream, ImageFormat.Jpeg );

keywords: graphics fly dynamic jpeg jpg response stream

Datagrid Girl! [Frequently Asked Questions]

faq about DataGrid

Displaying 2 DataTables in 1 DataGrid (uses Merge - look into this further)