Convert list into json in C#

Introduction:

This article explains how to convert list into json in c# with example

Example: 

//Your List 

var Result=(List<TreeViewStructure>)Helper.ExecuteService("your context","GetDATA",null); 

JavaScriptSerializer jss = new JavaScriptSerializer();

string output = jss.Serialize(Result);  // It Return Json Data

-----------------OR-------------------------

var output= new JsonResult { Data = topItems1, ContentType = "Json", 

JsonRequestBehavior = JsonRequestBehavior.AllowGet };