Forms Data Controls :: Show String Instead Of Number In Grid View?

in my colum values like: ,2, 1,,3 1,2,3 1 , ,3 i want to show some text instead of these number .... here is my code
Report Category: ---------------------------------------------------- public string reportcategory(object check) { string[] report_type = check.ToString().Split(','); foreach (string rtk in report_type) { if (Array.IndexOf(report_type, rtk)
!= -1) { if (rtk == "1") { string value = "Weekly"; return value; } else if (rtk == "2") { string value = "Daily"; return value; } else { string value = "Monthly"; return value; } } } } i have also confusion here suppose i have 1,2 then how to write code to show text like "weekely,Daily