How to resolve JSON serialization error in Telerik MVC grid to populate large dataset

For the past year, I have been working with Telerik MVC extensions. When I initially started, it seemed a good idea to use these controls event though I was aware that Telerik no longer supported these controls. Down the line,  I came across several instances where I wished I had used some other controls to begin with. Anyway, that is not to say that these controls are not handy. They are very useful if you want to get an application ready with few controls here and there, without having to go into the details.

But sometimes it is just a pure headache. I encountered an issue where I got a “JSON serialization error” when trying to load a large data-set into the telerik mvc grid using Ajax binding. The Data Access layer and the back-end scripts seemed to be populating the right data-set into the model. But when the exception occurred when the model had to be rendered into the telerik mvc grid.

JsonException

I tried increasing the maxLength in the web.config (as suggested in StackOverFlow posts) but that did not resolve the issue. The first assumption was that the since the JsonResult class caused the serialized JSON string to exceed the default maximum string of the JavaScriptSerializer class, this should have fixed the issue. Well, it did not fix the issue as the value of the MaxJsonLength only applies to the internal JavaScriptSerializer used by asynchronous communication layer to invoke Web services methods.

webconfig

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