This is the very common error when you try to get the large json value from web method. You can get the 500 – Internal server error page on your site. And you are confirm that you have very large json length then you can change the JSON serialization setting through the your web.config file. Continue reading 500 – Internal server error when i try to retrive large json value from web method
When you go through this article then you will find three function(Add,Modify and Remove) . Add and Modify function have two argument Key and value where Key is the name of key and value is value contain on the key and Remove function have one argument key name. Just pass value according to function parameter.