How to handle "Httphandler" in MVC？ RSS

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  TimoYang

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  How to handle "Httphandler" in MVC？

  May 05, 2012 01:45 AM|LINK

  Sorry I have to post a duplicated Issue because this problem hasn't been solved yet……

  Considering somebody such as MSFT——Yangyang tells me that he cannot reproduce the issue……I'd like to repeat the problem again:-)

  and here's my step：

  1. Create a ClassLibrary file to inherit the class from the interface：IHttpHandler，and then write this in the Requestprocess method：

  Bitmap bt = new Bitmap(20,20);
  
  Graphics g = Graphics.FromImage(bt);
  
  g.DrawString("1234",SystemFonts.DefaultFont,Brushes.Red,new PointF(0,0));
  
  g.Dispose();
  
  bt.Save(context.Response.OutputStream,ImageFormat.Jepg);

  2. Then create an MVC proj after referring this compiled dll file，and in the root，find out the web.config and do this：

  <httpHandler>
  
     <add path="*req" verb="*" type="AssemblyName.ClassName"/>
  
  </httpHandler>

  3. In the end，in the View page，do this：

  <img src='xyz.req'/>

  4. Run the MVC proj，I can see the blank img：BUT THIS CODE WORKS WELL IN THE FORM OF HTTPHANDLER(*.ASHX)……Why？

  Thxxxxxxxxxx anyway!

  • Edited by TimoYang on May 05, 2012 01:46 AM
  • Edited by TimoYang on May 05, 2012 01:49 AM
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  BrockAllen

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  Re: How to handle "Httphandler" in MVC？

  May 05, 2012 02:13 AM|LINK

  So you get a 404? The type needs to be fully qualified like this:

  <add path="*req" verb="*" type="Namespace.ClassName, AssemblyName"/>

  Brock Allen | http://brockallen.com
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  Rameshsoft

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  Re: How to handle "Httphandler" in MVC？

  May 05, 2012 03:17 AM|LINK

  What is the use of HTTPhandler in MVC?

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  TimoYang

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  Re: How to handle "Httphandler" in MVC？

  May 05, 2012 05:43 AM|LINK

  BrockAllen

  So you get a 404? The type needs to be fully qualified like this:

  <add path="*req" verb="*" type="Namespace.ClassName, AssemblyName"/>

  Not 404，the page runs well but shows me a red cross in the position of "<img>"……:(

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  imran_ku07

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  Re: How to handle "Httphandler" in MVC？

  May 05, 2012 01:22 PM|LINK

  PLease share me a sample project at

  imran_ku07  at  yahoo.com

  Make sure that the project should be as minimum as possible.

  "And whoever is removed away from the Fire and admitted to Paradise, he indeed is successful." (The Holy Quran)
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  BrockAllen

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  Re: How to handle "Httphandler" in MVC？

  May 05, 2012 01:34 PM|LINK

  TimoYang

  BrockAllen

  So you get a 404? The type needs to be fully qualified like this:

  <add path="*req" verb="*" type="Namespace.ClassName, AssemblyName"/>

  Not 404，the page runs well but shows me a red cross in the position of "<img>"……:(

  Take your code that creates the images and instead of send it back from a http request, save it to disk and then try to open it with a image viewer. I'm guessing it's something to do with how you create the image, not how you serve it over http.

  Brock Allen | http://brockallen.com
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  TimoYang

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  Re: How to handle "Httphandler" in MVC？

  May 06, 2012 06:24 AM|LINK

  Hello BrockAllen——Thanks you are very kind:-)！

  Just feeling curious that if I use a generic handler—— ashx，everything goes fine with me；But when I use a common C# class in the form of library……Nothing happens:(

  Why？？？

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  TimoYang

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  Re: How to handle "Httphandler" in MVC？

  May 06, 2012 06:27 AM|LINK

  imran_ku07

  PLease share me a sample project at

  imran_ku07  at  yahoo.com

  Make sure that the project should be as minimum as possible.

  Oh dear mvp！Many thanks

  Now I've sent it to you，plz accept it……:D

  Chatting with you……;D

  • Edited by TimoYang on May 06, 2012 06:38 AM
  • Edited by TimoYang on May 06, 2012 06:42 AM
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  imran_ku07

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  Re: How to handle "Httphandler" in MVC？

  May 06, 2012 07:09 AM|LINK

  You are only missing this in global.asax,

  routes.IgnoreRoute("{resource}.req/{*pathInfo}");

  "And whoever is removed away from the Fire and admitted to Paradise, he indeed is successful." (The Holy Quran)
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  • Marked as answer by TimoYang on May 06, 2012 08:27 AM
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  TimoYang

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  Re: How to handle "Httphandler" in MVC？

  May 06, 2012 08:27 AM|LINK

  imran_ku07

  You are only missing this in global.asax,

  routes.IgnoreRoute("{resource}.req/{*pathInfo}");

  Hi imran_ku07！

  Many many thanks！I don't know how to be grateful to you！

  Just feeling curious——Why should I add this？And if I use ashx，why don't I need to do that？

  Reguards！