How can use this in web forms asp.net

Need to use this in web forms. How should i change this json result to perform operation in web form ajax mathod call.

public ActionResult FetchGraphData() { var data = new List<Statistics> { new Statistics{Day = "1-Nov-2012", Value = 10}, new Statistics{Day = "2-Nov-2012", Value = 20}, new Statistics{Day = "3-Nov-2012", Value = 22}, new Statistics{Day = "4-Nov-2012", Value = 15}, new Statistics{Day = "5-Nov-2012", Value = 40}, new Statistics{Day = "6-Nov-2012", Value = 1}, new Statistics{Day = "7-Nov-2012", Value = 0}, new Statistics{Day = "8-Nov-2012", Value = 3}, new Statistics{Day = "9-Nov-2012", Value = 11}, new Statistics{Day = "10-Nov-2012", Value = 22}, new Statistics{Day = "11-N ...