protected void GetDataForm()
 {
     if (ddlCategory.SelectedValue == "1")
     {
         txtCategory.Visible = true;
         Category category = new Category();
         if (string.IsNullOrEmpty(txtCategory.Text))
         {
             pnlRed.Visible = true;
             lblError.Text  = "Category is null.";
             return;
         }
         category.Category_Id   = Guid.NewGuid();
         category.Category_Name = txtCategory.Text;
         if (categoryBll.Category_CheckName(category.Category_Name))
         {
             pnlRed.Visible = false;
             pnlRed.Visible = true;
             lblError.Text  = "This category name have already used..";
             return;
         }
         if (!categoryBll.Category_Insert(category))
         {
             pnlRed.Visible = false;
             pnlRed.Visible = true;
             lblError.Text  = "Do not success category.";
             return;
         }
         Product product = CreateProduct();
         if (product == null)
         {
             pnlRed.Visible = true;
             lblError.Text  = "Company name is null.";
             return;
         }
         product.Category_Id = category.Category_Id;
         if (!productBll.Product_Insert(product))
         {
             pnlGreen.Visible = false;
             pnlRed.Visible   = true;
             lblError.Text    = "Do not success.";
             return;
         }
         pnlRed.Visible   = false;
         pnlGreen.Visible = true;
         lblSuccess.Text  = "Have a Success";
         return;
     }
     else
     {
         if (ddlCategory.SelectedValue == "0")
         {
             pnlRed.Visible = true;
             lblError.Text  = "category name is null.";
             return;
         }
         Product product = CreateProduct();
         if (product == null)
         {
             pnlRed.Visible = true;
             lblError.Text  = "Company name is null.";
             return;
         }
         product.Category_Id = new Guid(ddlCategory.SelectedValue);
         if (!productBll.Product_Insert(product))
         {
             pnlGreen.Visible = false;
             pnlRed.Visible   = true;
             lblError.Text    = "Do not success.";
             return;
         }
         pnlGreen.Visible = true;
         pnlRed.Visible   = false;
         lblSuccess.Text  = "Have a Success";
         return;
     }
 }