.NET MVC 4 JSON Post/Put char limit in Web.config

I am using the PUT verb to send JSON to a MVC controller. When I reach a certain limit I get a 500 error. If I scale back the JSON I send, then it sends just fine… Does anyone know of a configuration in the web.config that will allow a larger amount of JSON to be passed to my application?

Here is Solutions:

We have many solutions to this problem, But we recommend you to use the first solution because it is tested & true solution that will 100% work for you.

Solution 1

Here is the answer… My JSON object was quite large so .NET wouldn’t allow it to pass due to a “security feature” The default is 2000, so I bumped it and it worked perfectly.

  <add key="aspnet:MaxJsonDeserializerMembers" value="5000"/>

Solution 2

Approach – 1

<configuration> 
   <system.web.extensions>
       <scripting>
           <webServices>
               <jsonSerialization maxJsonLength="50000000"/>
           </webServices>
       </scripting>
   </system.web.extensions>
</configuration> 

Approach – 2

<location path="File Path or FileHandler.ashx">
  <system.web>
    <httpRuntime executionTimeout="your value" maxRequestLength="Your value" />
  </system.web>
</location>

Using this approach, we can set the limits for specific page and not for the complete application.

Approach – 3

<httpRuntime targetFramework="Your version" maxRequestLength="Your value" />

Using this approach, we can set the limits for complete application.

Solution 3

Check the maxRequestLength in your web.config. If the data exceeds maxRequestLength, 500 status is returned.

<httpRuntime targetFramework="4.5" maxRequestLength="XXX" />

Note: if maxRequestLength isn’t specified. Default value is 4MB.

If that doesn’t work, try IIS’s Request Limits. Documentation however says that 404 status should be returned.

Note: Use and implement solution 1 because this method fully tested our system.
Thank you 🙂

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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