Page method return Entire html page

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C#

Javascript

In my application i am using page method to get some data My javascript code is
PageMethods.ProductFillFileUploadDetails(DistibutorId.id, GetFileuploadDetails_onSuccess, GetFileuploadDetails_onFail);

and the c# code is

protected void RadGrid1_NeedDataSource(object source, GridNeedDataSourceEventArgs e)
   {

       DataTable dt = bindgrid();
       this.RadGrid1.DataSource = dt;

   }
   [System.Web.Services.WebMethod]
   [System.Web.Script.Services.ScriptMethod]
   public static string ProductFillFileUploadDetails(string DistibutorId)
   {
       DataServiceBase objdal = new DataServiceBase();
       DataTable dtpricingrule = new DataTable();
       dtpricingrule.Rows.Clear();
       dtpricingrule = objdal.Getdata("SELECT* from XXXX));
       string UploadDetails = dtpricingrule.Rows[0][0].ToString() + "," + dtpricingrule.Rows[0][1].ToString();
       return UploadDetails;
   }

the above code working fine in locall
but return entire web page Remote server please help me any one.
thanks by Meganathan.M