public void bindClass()
 {
     try
     {
         ObjEWA.OrgId = Session["OrgId"].ToString();
         DataSet ds = ObjBL.BindClassForinstallments(ObjEWA);
         if (ds.Tables[0].Rows.Count != 0)
         {
             ddlCourse.DataSource     = ds;
             ddlCourse.DataTextField  = "class";
             ddlCourse.DataValueField = "ClassId";
             ddlCourse.DataBind();
             ddlCourse.Items.Insert(0, new ListItem("Select", "0"));
             // disbleControls();
         }
     }
     catch (Exception exp)
     {
         throw;
     }
 }