Asp.net Image Watermarking code

<% @ Webhandler language = "c #" class = "bookhandler" %>

Using system;

Using system. web;

Using system. drawing;

Using system. io;

 

Public class bookhandler: ihttphandler {

Private const string coversaddr = "~ /Image/"; // cover folder path

Private const string watermark_url = "~ /Images/watermark.jpg "; // quantity

Watermark path

Private const string default_url = "~ /Images/default.jpg "; // default image

Film path

Public void processrequest (httpcontext context ){

String path = context. request. mappath (coversaddr +

Context. request. params ["isbn"]. tostring () + ". jpg ");

Image cover;

If (file. exists (path ))

{

Cover = image. fromfile (path );

Image watermark = image. fromfile (context. request. mappath

(Watermark_url ));

Graphics g = graphics. fromimage (cover );

G. drawimage (watermark, new rectangle (cover. width-

Watermark. width, cover. height-watermark. height, watermark. width,

Watermark. height), 0, 0, watermark. width, watermark. height,

Graphicsunit. pixel );

G. dispose ();

Watermark. dispose ();

}

Else

{

Cover = image. fromfile (context. request. mappath

(Default_url ));

}

 

Context. request. contenttype = "image/ipeg ";

Cover. save

(Context.response.outputstream,system.drawing.imaging.imageformat.jpeg );

Cover. dispose ();

Context. response. end ();

}

 

Public bool isreusable {

Get {

Return false;

}

}

 

}

Finally, change the path of the connected image

Bookcover. ashx? Isbn = number.

 

Configure jpg access in iis