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c# - converting list to json format - quick and easy way

Let's say I have an object MyObject that looks like this:

public class MyObject
{
  int ObjectID {get;set;}
  string ObjectString {get;set;}
} 

I have a list of MyObject and I'm looking to convert it in a json string with a stringbuilder. I know how to create a JavascriptConverter and create a json string by passing a list and having the converter build the string but in this particular case I'm looking to avoid the overhead and go straight to a json string with a foreach loop on the list like this:

StringBuilder JsonString = new StringBuilder();

foreach(MyObject TheObject in ListOfMyObject)
{

}

I've tried to use this method by appending with commas and quotes but it hasn't worked out (yet).

Thanks for your suggestions.

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I've done something like before using the JavaScript serialization class:

using System.Web.Script.Serialization;

And:

JavaScriptSerializer jss = new JavaScriptSerializer();

string output = jss.Serialize(ListOfMyObject);
Response.Write(output);
Response.Flush();
Response.End();

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