CoolWatermark is a cool and strong assembly to write watermark text or overlapped photo on image and is designed for .NET, you can easily use in .NET window application or ASP.NET application.
Read all Image type .NET supports(Bmp, Emf, Exif, Gif, Icon, Jpeg, Png, Tif, Wmf ) . All methods return System.Drawing.Image object on which you can make any modification, so you can aslo write it in any formation .NET supports.
Write text with kinds of special shape and effect; shadow and hollow the text; traparent watermark, and specialize the default position of watermark.
Download.Link-1 CoolWatermark (Single Developer License) is the Shareware version. The full version can be purchased by clicking on the "CLICK HERE TO ORDER" button below for around 59.50USD.