How to increase the max upload file size in ASP.NET?

c# .net asp.net file-upload
Eddie picture Eddie · Nov 13, 2008 · Viewed 386.3k times · Source

I have a form that excepts a file upload in ASP.NET. I need to increase the max upload size to above the 4 MB default.

I have found in certain places referencing the below code at msdn. 

[ConfigurationPropertyAttribute("maxRequestLength", DefaultValue = )]

None of the references actually describe how to use it, and I have tried several things with no success. I only want to modify this attribute for certain pages that are asking for file upload.

Is this the correct route to take? And how do I use this?

Answer

Eric Rosenberger picture Eric Rosenberger · Nov 13, 2008

This setting goes in your web.config file. It affects the entire application, though... I don't think you can set it per page.

<configuration>
  <system.web>
    <httpRuntime maxRequestLength="xxx" />
  </system.web>
</configuration>

"xxx" is in KB. The default is 4096 (= 4 MB).

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