private void buttonXoa_Click(object sender, EventArgs e)
{
DialogResult dr;
dr = MessageBox.Show("Bạn có chắc chắn muốn xóa không?",
"Thông báo",
MessageBoxButtons.YesNo);
if (dr == DialogResult.Yes)
{
DiemCuaSinhVien diemCanXoa = data[dataGridViewDiemCuaSV.SelectedCells[0].RowIndex];
QLSVDB db = new QLSVDB();
DiemCuaSinhVien diemXoa = db.DiemCuaSinhViens.Where
(x => x.MSSV == diemCanXoa.MSSV && x.MaHocPhan == diemCanXoa.MaHocPhan && x.TenHocPhan == diemCanXoa.TenHocPhan &&
x.HocKy == diemCanXoa.HocKy && x.NienKhoa == diemCanXoa.NienKhoa).SingleOrDefault();
db.DiemCuaSinhViens.Remove(diemXoa);
db.SaveChanges();
DoLaiDuLieu();
}
}
private void buttonLuu_Click(object sender, EventArgs e)
{
DiemCuaSinhVien diemMoi = new DiemCuaSinhVien()
{
MaHocPhan = textBoxMaHocPhan.Text,
TenHocPhan = textBoxTenHocPhan.Text,
TinChi = int.Parse(textBoxTinChi.Text),
LoaiMonHoc = textBoxLoaiMonHoc.Text,
HocKy = int.Parse(textBoxHocKy.Text),
NienKhoa = textBoxNienKhoa.Text,
MSSV = mssv
};
if (textBoxDiemQT.Text != "")
{
diemMoi.DiemQT = float.Parse(textBoxDiemQT.Text);
}
if (textBoxDiemThi.Text != "")
{
diemMoi.DiemThi = float.Parse(textBoxDiemThi.Text);
}
if (textBoxDiemQT.Text != "" && textBoxDiemThi.Text != "")
{
float diem = (float.Parse(textBoxDiemQT.Text) + float.Parse(textBoxDiemThi.Text)) / 2;
string diemChi;
if (diem >= 8.5)
{
diemChi = "A";
}
else if (diem >= 7.5)
{
diemChi = "B";
}
else if (diem >= 6)
{
diemChi = "C";
}
else if (diem >= 5)
{
diemChi = "D";
}
else if (diem >= 3)
{
diemChi = "E";
}
else
{
diemChi = "F";
}
bool ketQua = diem >= 5;
diemMoi.Diem = diem;
diemMoi.DiemChi = diemChi;
diemMoi.KetQua = ketQua;
}
QLSVDB db = new QLSVDB();
db.DiemCuaSinhViens.Add(diemMoi);
db.SaveChanges();
this.Close();
}
private void buttonLuu_Click(object sender, EventArgs e)
{
QLSVDB db = new QLSVDB();
DiemCuaSinhVien diemCu = db.DiemCuaSinhViens.Where
(thongTin => thongTin.MaHocPhan == this.diem.MaHocPhan && thongTin.TenHocPhan == this.diem.TenHocPhan &&
thongTin.HocKy == this.diem.HocKy && thongTin.NienKhoa == this.diem.NienKhoa && thongTin.MSSV == this.diem.MSSV).SingleOrDefault();
if (textBoxTinChi.Text != "")
{
diemCu.TinChi = int.Parse(textBoxTinChi.Text);
}
if (textBoxLoaiMonHoc.Text != "")
{
diemCu.LoaiMonHoc = textBoxLoaiMonHoc.Text;
}
if (textBoxDiemQT.Text != "")
{
diemCu.DiemQT = float.Parse(textBoxDiemQT.Text);
}
if (textBoxDiemThi.Text != "")
{
diemCu.DiemThi = float.Parse(textBoxDiemThi.Text);
}
if (textBoxDiemQT.Text != "" && textBoxDiemThi.Text != "")
{
float diem = (float.Parse(textBoxDiemQT.Text) + float.Parse(textBoxDiemThi.Text)) / 2;
string diemChi;
if (diem >= 8.5)
{
diemChi = "A";
}
else if (diem >= 7.5)
{
diemChi = "B";
}
else if (diem >= 6)
{
diemChi = "C";
}
else if (diem >= 5)
{
diemChi = "D";
}
else if (diem >= 3)
{
diemChi = "E";
}
else
{
diemChi = "F";
}
bool ketQua = diem >= 5;
diemCu.Diem = diem;
diemCu.DiemChi = diemChi;
diemCu.KetQua = ketQua;
}
db.SaveChanges();
this.Close();
}