AutoCompleteExtender works sometimes.
[System.Web.Services.WebMethod] [System.Web.Script.Services.ScriptMethod] public string[] GetRowsByFilter(string prefixText, int count) //public static List<string> GetRowsByFilter(string prefixText) { DataTable table = ds.Tables[0]; string filter = "stShortName LIKE '" + prefixText.Replace("'", "''") ...