private void PopulateOrdersBySearch(string FieldName, string Value)
 {
     PCSN.InvoiceSystem.BusinessLogicLayer.Order Order = new PCSN.InvoiceSystem.BusinessLogicLayer.Order();
     if (FieldName == "IsPending")
     {
         dtOrderDG = Order.GetAllOrdersBySearch(Convert.ToInt16(Value));
     }
     if (FieldName == "OrderNumber")
     {
         dtOrderDG = Order.GetAllOrdersByOrderNumber(Convert.ToInt32(Value));
     }
     if (FieldName == "OrderDate")
     {
         dtOrderDG = Order.GetAllOrdersByOrderDate(Value);
     }
     dgOrders.DataSource = dtOrderDG;
     dgOrders.DataBind();
 }