Prasad Prasad - 2 months ago 27
JSON Question

Can I set an unlimited length for maxJsonLength in web.config?

I am using the autocomplete feature of jQuery. When I try to retrieve the list of more then 17000 records (each won't have more than 10 char length), it's exceeding the length and throws the error:


Exception information:

Exception type: InvalidOperationException

Exception message: Error during serialization or deserialization using the JSON JavaScriptSerializer. The length of the string exceeds the value set on the maxJsonLength property.


Can I set an unlimited length for
maxJsonLength
in
web.config
? If not, what is the maximum length I can set?

CMS CMS
Answer

NOTE: this answer applies only to Web services, if you are returning JSON from a Controller method, make sure you read this SO answer below as well: http://stackoverflow.com/a/7207539/1246870


The MaxJsonLength property cannot be unlimited, is an integer property that defaults to 102400 (100k).

You can set the MaxJsonLength property on your web.config:

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