public void DeleteDiscount(Discount discount, bool isImmediateSave)
{
try
{
/*IDiscountItemRepository discountItemRepository = new DiscountItemRepository();
var discountItems = discountItemRepository.GetDiscountItems().Where(discountItem => discountItem.discountID == discount.discountID);
foreach (DiscountItem discountItem in discountItems)
{
discountItemRepository.DeleteDiscountItem(discountItem, false);
}
discountItemRepository.Dispose();*/
mContext.Discounts.Attach(discount);
mContext.Discounts.DeleteObject(discount);
if (isImmediateSave)
{
mContext.SaveChanges();
}
}
catch (Exception ex)
{
// TODO: Add exception handling code here.
throw ex;
}
}
public void UpdateDiscount(Discount discount, Discount origDiscount)
{
try
{
mRepository.UpdateDiscount(discount, origDiscount, true);
}
catch (Exception ex)
{
throw ex;
}
}
public void InsertDiscount(Discount discount)
{
try
{
mRepository.InsertDiscount(discount, true);
}
catch (Exception ex)
{
throw ex;
}
}
public void DeleteDiscount(Discount discount)
{
try
{
mRepository.DeleteDiscount(discount, true);
}
catch (Exception ex)
{
throw ex;
}
}
public void InsertDiscount(Discount discount, bool isImmediateSave)
{
try
{
mContext.Discounts.AddObject(discount);
if (isImmediateSave)
{
mContext.SaveChanges();
}
}
catch (Exception ex)
{
// TODO: Add exception handling code here.
throw ex;
}
}
public void UpdateDiscount(Discount newDiscount, Discount origDiscount, bool isImmediateSave)
{
try
{
mContext.Discounts.Attach(origDiscount);
mContext.ApplyCurrentValues("Discounts", newDiscount);
if (isImmediateSave)
{
mContext.SaveChanges();
}
}
catch (Exception ex)
{
// TODO: Add exception handling code here.
throw ex;
}
}
protected void OnOperateItem(Object sender, CommandEventArgs e)
{
DataTable source = (DataTable)ViewState["DataSource"];
DataTable filteredSource = (DataTable)ViewState["FilteredDataSource"];
if(e.CommandName == "DeleteItem")
{
// Mark the deleting row's status as "D" and remove this row from the filtered source.
foreach (DataRow row in source.Rows)
{
if ((string)row["id"] == (string)e.CommandArgument)
{
row["status"] = "D";
foreach (DataRow tempRow in filteredSource.Rows)
{
if ((string)tempRow["id"] == (string)e.CommandArgument)
{
filteredSource.Rows.Remove(tempRow);
break;
}
}
break;
}
}
}
else if (e.CommandName == "EditItem")
{
// Mark the deleting row's status as "M" and jump to the item editing page.
foreach (DataRow row in source.Rows)
{
if ((string)row["id"] == (string)e.CommandArgument)
{
// Change its status to "M" only when this item is not a new inserted item.
if ((string)row["status"] != "I")
{
row["status"] = "M";
}
// Store the data in the ViewState into the SessionState temporarily.
Session.Add("DataSource", source);
Session.Add("FilteredDataSource", filteredSource);
// Add a variable in the SessionState to indicate the current mode.
Session.Add("IsEditMode", !mIsNew);
// Store the current editing state into the SessionState temporarily.
Discount discount = new Discount();
discount.discountID = Convert.ToInt32(DiscountIDLabel.Text);
discount.description = DiscountDescriptionTextBox.Text;
discount.startDate = Convert.ToDateTime(DateDown.Text);
discount.endDate = Convert.ToDateTime(DateUp.Text);
Session.Add("CurrentState", discount);
// Jump to the discount item editing page.
Response.Redirect("~/WebPages/DiscountItemEdit.aspx?isNew=false&discountItemID=" + (string)row["id"]);
}
}
}
else if (e.CommandName == "InsertItem")
{
// Store the data in the ViewState into the SessionState temporarily.
Session.Add("DataSource", source);
Session.Add("FilteredDataSource", filteredSource);
// Add a variable in the SessionState to indicate the current mode.
Session.Add("IsEditMode", !mIsNew);
// Store the current editing state into the SessionState temporarily.
Discount discount = new Discount();
if (!mIsNew)
{
discount.discountID = Convert.ToInt32(DiscountIDLabel.Text);
}
else
{
discount.discountID = -1;
}
discount.description = DiscountDescriptionTextBox.Text;
discount.startDate = Convert.ToDateTime(DateDown.Text);
discount.endDate = Convert.ToDateTime(DateUp.Text);
Session.Add("CurrentState", discount);
// Jump to the discount item editing page.
Response.Redirect("~/WebPages/DiscountItemEdit.aspx?isNew=true");
}
// Data binding.
DiscountItemsGridView.DataSource = filteredSource;
DiscountItemsGridView.DataBind();
}
protected void SubmitButton_Click(object sender, EventArgs e)
{
// Submit all the changes.
Discount origDiscount = GetDiscount();
Discount discount = new Discount();
DiscountItemBL discountItemBL = new DiscountItemBL();
DataTable source = (DataTable)ViewState["DataSource"];
// First, the discount.
discount.description = DiscountDescriptionTextBox.Text;
discount.startDate = Convert.ToDateTime(DateDown.Text);
discount.endDate = Convert.ToDateTime(DateUp.Text);
if (mIsNew)
{
mDiscounts.InsertDiscount(discount);
}
else
{
discount.discountID = origDiscount.discountID;
mDiscounts.UpdateDiscount(discount, origDiscount);
}
// Then, the corresponding discount items.
foreach (DataRow row in source.Rows)
{
DiscountItem item = new DiscountItem();
DiscountItem origItem = discountItemBL.GetDiscountItem(Convert.ToInt32(row["id"]));
if ((string)row["status"] == "D")
{
// Delete this row.
discountItemBL.DeleteDiscountItem(origItem);
}
else if ((string)row["status"] == "M")
{
// Update this row.
item.id = origItem.id;
item.productID = Convert.ToInt32(row["productID"]);
item.description = row["description"].ToString();
item.discountID = discount.discountID;
item.discountPercent = (float)Convert.ToDouble(row["discountPercent"]);
discountItemBL.UpdateDiscountItem(item, origItem);
}
else if ((string)row["status"] == "I")
{
// Insert this row.
item.productID = Convert.ToInt32(row["productID"]);
item.description = row["description"].ToString();
item.discountID = discount.discountID;
item.discountPercent = (float)Convert.ToDouble(row["discountPercent"]);
discountItemBL.InsertDiscountItem(item);
}
}
// Jump back to the discount list page.
Response.Redirect("~/WebPages/Discounts.aspx");
}
/// <summary>
/// 创建新的 Discount 对象。
/// </summary>
/// <param name="discountID">discountID 属性的初始值。</param>
/// <param name="description">description 属性的初始值。</param>
/// <param name="startDate">startDate 属性的初始值。</param>
/// <param name="endDate">endDate 属性的初始值。</param>
public static Discount CreateDiscount(global::System.Int32 discountID, global::System.String description, global::System.DateTime startDate, global::System.DateTime endDate)
{
Discount discount = new Discount();
discount.discountID = discountID;
discount.description = description;
discount.startDate = startDate;
discount.endDate = endDate;
return discount;
}
/// <summary>
/// 用于向 Discounts EntitySet 添加新对象的方法，已弃用。请考虑改用关联的 ObjectSet<T> 属性的 .Add 方法。
/// </summary>
public void AddToDiscounts(Discount discount)
{
base.AddObject("Discounts", discount);
}
