/// <summary>
/// cập nhật môn học
/// </summary>
/// <param name="mamh"></param>
/// <param name="tenmh"></param>
/// <param name="sochi"></param>
public void update(string masv, string mamh, double diem, int lanthu, string ghichu, string hocki)
{
try
{
dbConnect.Open();
Diemsv obj = (from Diemsv o in dbConnect.db
where (o.Mamh == mamh) && (o.Masv == masv)
select o).FirstOrDefault();
if (obj != null)
{
obj.Diem = diem;
obj.Lanthu = lanthu;
obj.Ghichu = ghichu;
obj.Hocki = hocki;
dbConnect.db.Store(obj);
}
dbConnect.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
dbConnect.Close();
}
}
/// <summary>
/// thêm môn học
/// </summary>
/// <param name="mamh"></param>
/// <param name="tenmh"></param>
/// <param name="sochi"></param>
public void add(string masv, string mamh, double diem, int lanthu, string ghichu, string hocki)
{
Diemsv obj = new Diemsv();
obj.Masv = masv;
obj.Mamh = mamh;
obj.Diem = diem;
obj.Lanthu = lanthu;
obj.Ghichu = ghichu;
obj.Hocki = hocki;
try
{
dbConnect.Open();
dbConnect.db.Store(obj);
dbConnect.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
dbConnect.Close();
}
}
/// <summary>
/// thêm môn học
/// </summary>
/// <param name="mamh"></param>
/// <param name="tenmh"></param>
/// <param name="sochi"></param>
public void add(string masv, string mamh, double diem, int lanthu, string ghichu, string hocki)
{
Diemsv obj = new Diemsv();
obj.Masv = masv;
obj.Mamh = mamh;
obj.Diem = diem;
obj.Lanthu = lanthu;
obj.Ghichu = ghichu;
obj.Hocki = hocki;
try
{
dbConnect.Open();
dbConnect.db.Store(obj);
dbConnect.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
dbConnect.Close();
}
}
/// <summary>
/// Kiểm tra mã môn học có trong csdl chưa
/// </summary>
/// <param name="mamh"></param>
/// <returns></returns>
public bool isExist(string mamh, string mssv)
{
Diemsv obj = this.getById(mamh, mssv);
if (obj == null)
{
return(false);
}
return(true);
}
/// <summary>
/// lấy môn học theo mã
/// </summary>
/// <param name="ma"></param>
/// <returns></returns>
public Diemsv getById(string ma, string mssv)
{
Diemsv obj = null;
try
{
dbConnect.Open();
obj = (from Diemsv o in dbConnect.db
where (o.Mamh == ma) && (o.Masv == mssv)
select o).FirstOrDefault();
dbConnect.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
dbConnect.Close();
}
return(obj);
}
/// <summary>
/// xóa môn học
/// </summary>
/// <param name="ma"></param>
public void delete(string mamh, string mssv)
{
try
{
dbConnect.Open();
Diemsv obj = (from Diemsv o in dbConnect.db
where (o.Mamh == mamh) && (o.Masv == mssv)
select o).FirstOrDefault();
if (obj != null)
{
dbConnect.db.Delete(obj);
}
dbConnect.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
dbConnect.Close();
}
}
