protected void btnSave_Click(object sender, EventArgs e)
        {
            GeneralLookup designer = new GeneralLookup();

            if (EditDesigner > 0)
            {
                designer.LoadByPrimaryKey(EditDesigner);
            }
            else
            {
                designer.AddNew();
            }
            designer.Name = txtDesignerName.Text;
            designer.Address = txtDesignerAddress.Text;
            designer.Email = txtDesignerEmail.Text;
            designer.Telephone = txtDesignerTelephone.Text;
            designer.CategoryID = 1;
            designer.Save();

            ClearFields();
            bindData();
            panelDesignersGrid.Visible = true;
            panelDesignersEdit.Visible = false;
        }
 protected void GridViewDesigners_RowCommand(object sender, GridViewCommandEventArgs e)
 {
     if (e.CommandName == "editDesigner")
     {
         GeneralLookup designer = new GeneralLookup();
         designer.LoadByPrimaryKey(int.Parse(e.CommandArgument.ToString()));
         txtDesignerAddress.Text = designer.Address;
         txtDesignerEmail.Text = designer.Email;
         txtDesignerName.Text = designer.Name;
         txtDesignerTelephone.Text = designer.Telephone;
         EditDesigner = int.Parse(e.CommandArgument.ToString());
         panelDesignersEdit.Visible = true;
         panelDesignersGrid.Visible = false;
     }
     else if (e.CommandName == "deleteDesigner")
     {
         GeneralLookup designer = new GeneralLookup();
         designer.LoadByPrimaryKey(int.Parse(e.CommandArgument.ToString()));
         designer.MarkAsDeleted();
         designer.Save();
         bindData();
     }
 }