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what is httphandler

Posted By:      Posted Date: May 22, 2011    Points: 0   Category :ASP.Net


       Can anyone explian to me please what is httphandler and where do we use it.  or provide me any usefull links from where I can read more about it.  thanks in advance.

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I'm new to HttpHandlers.  I am writing an HttpHandler that reads uploaded files directly from the request stream to provide progress that can be queried using an AJAX request.  For large files, this seems to be faster than having ASP.NET load the file contents into Request.Files and then streaming the file from there to wherever it goes (Linq to SQL into a VARBINARY column in an SQL Server database.)

My HttpHandler works perfectly when I'm debugging using the Visual Studio Development Server, but doesn't work otherwise.  The application pool for this application in IIS 7 is set to run in Classic Mode, and the Handler Mappings screen in IIS says that I must manage managed handlers in system.web/httpHandlers. 

I set up in my applications Web.config file.

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I'm trying to spoof a System.Web.UI.Page in my httphandler, and while this works to some degree.. the "page" needs some added query strings to make this complete. Note below that I'm passing in a virtual path to the Page instance. Can anyone help? I tried adding the query strings to the p.Request object after the Page instance has been instantitated, but I believe the error is -- "Request is not available in this context"

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Hello everyone,

I have a problem:

I am currently using 2 features: 

1. HttpHandler

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Hello, I hope someone can help me. I've inherited an application from a previous employee. The handler works completely fine in SP2003 and SP2007 installations, but when I've tried to get it working within SP2010 to no avail. I'm getting the error: "There was an error trying to locate the requested file: http://localhost/DocCenter/Documents/dddd.tvx Init: The given key was not present in the dictionary."  In SP2003 and SP2007, the httphandler was put in the <httphandlers> section of web.config. For me to get this error, I put the handler under <handlers> in the SP2010 web.config as it just doesn't seem to execute under httphandlers.   Any advice on where I may be able to research/find the solution to get it running under SP2010?   Cheers!

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