You can set the MaxJsonLength property on your web.config: [sourcecode language=”html”] <configuration> <system.web.extensions> <scripting> <webServices> <jsonSerialization maxJsonLength="50000000"/> </webServices> </scripting> </system.web.extensions> </configuration> [/sourcecode] refer link: http://stackoverflow.com/questions/1151987/can-i-set-an-unlimited-length-for-maxjsonlength-in-web-config
Error during serialization or deserialization using the JSON JavaScriptSerializer. The length of the string exceeds the value set on the maxJsonLength property.
