/// <summary>
/// Kiểm tra và thêm mới PollAnswer
/// </summary>
/// <param name="entity">Entity</param>
/// <returns>Int32: ID của PollAnswer Mới Thêm Vào</returns>
public static Int32 Add(PollAnswerEntity entity)
{
checkLogic(entity);
checkDuplicate(entity, true);
checkFK(entity);
return PollAnswerDAL.Add(entity);
}
/// <summary>
/// Kiểm tra và chỉnh sửa PollAnswer
/// </summary>
/// <param name="entity">PollAnswerEntity</param>
/// <returns>bool:kết quả thực hiện</returns>
public static bool Edit(PollAnswerEntity entity)
{
checkExist(entity);
checkLogic(entity);
checkDuplicate(entity, false);
checkFK(entity);
return PollAnswerDAL.Edit(entity);
}
protected void lbtnRemove_Click(object sender, EventArgs e)
{
for (int i = 0; i < lstbAnswer.Items.Count; i++)
{
if (lstbAnswer.Items[i].Selected)
{
PollAnswerEntity entity = new PollAnswerEntity();
entity.iAnswerID = Convert.ToInt32(lstbAnswer.Items[i].Value);
PollAnswerBRL.Remove(entity);
}
}
NapListbox();
}
protected void lbtnAdd_Click(object sender, EventArgs e)
{
if (Page.IsValid)
{
try
{
if (Session["PollID"] != null)
{
PollAnswerEntity entity = new PollAnswerEntity();
entity.iCount = 0;
entity.iPollID = Convert.ToInt32(Session["PollID"]);
entity.sAnswer = txtAdd.Text;
PollAnswerBRL.Add(entity);
NapListbox();
}
}
catch (Exception ex)
{
Response.Write("<script language=\"javascript\">alert('" + ex.Message + "');location='Default.aspx?page=AnswerManager';</script>");
}
}
}
/// <summary>
/// Kiểm tra logic Entity
/// </summary>
/// <param name="entity">PollAnswerEntity: entity</param>
private static void checkLogic(PollAnswerEntity entity)
{
if (String.IsNullOrEmpty(entity.sAnswer))
throw new Exception(EX_SANSWER_EMPTY);
if (entity.iCount < 0)
throw new Exception(EX_ICOUNT_INVALID);
if (entity.iPollID < 0)
throw new Exception(EX_IPOLLID_INVALID);
}
/// <summary>
/// Kiểm tra tồn tại khóa ngoại
/// </summary>
/// <param name="entity">PollAnswerEntity:entity</param>
private static void checkFK(PollAnswerEntity entity)
{
PollEntity oPoll = PollDAL.GetOne(entity.iPollID);
if (oPoll==null)
{
throw new Exception("Không tìm thấy bình chọn này");
}
}
private static void checkExist(PollAnswerEntity entity)
{
PollAnswerEntity oPollAnswer=PollAnswerDAL.GetOne(entity.iAnswerID);
if(oPollAnswer==null)
throw new Exception(EX_NOT_EXIST);
}
/// <summary>
/// Kiểm tra trùng lặp bản ghi
/// </summary>
/// <param name="entity">PollAnswerEntity: PollAnswerEntity</param>
private static void checkDuplicate(PollAnswerEntity entity,bool CheckInsert)
{
List<PollAnswerEntity> list = PollAnswerDAL.GetAll();
if (list.Exists(
delegate(PollAnswerEntity oldEntity)
{
bool result= oldEntity.sAnswer.Equals(entity.sAnswer, StringComparison.OrdinalIgnoreCase) && oldEntity.iPollID==entity.iPollID;
if (!CheckInsert)
result=result && oldEntity.iAnswerID != entity.iAnswerID;
return result;
}
))
{
list.Clear();
throw new Exception(EX_ANSWER_EXISTED);
}
}
/// <summary>
/// Kiểm tra và xoá PollAnswer
/// </summary>
/// <param name="entity">PollAnswerEntity</param>
/// <returns>bool:kết quả thực hiện</returns>
public static bool Remove(PollAnswerEntity entity)
{
checkExist(entity);
return PollAnswerDAL.Remove(entity.iAnswerID);
}