private void btnXoa_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
{
if (MessageBox.Show("Bạn có thật sự muốn xóa sinh viên này ?? ", "Xác nhận",
MessageBoxButtons.OKCancel) == DialogResult.OK)
{
try
{
UndoLop undo = new UndoLop(XOA, getInfoSinhVien());
st.Push(undo);
maSV = ((DataRowView)bdsSinhVien[bdsSinhVien.Position])["MASV"].ToString(); // giữ lại để khi xóa bij lỗi thì ta sẽ quay về lại
bdsSinhVien.RemoveCurrent();
this.SinhVienTableAdapter.Connection.ConnectionString = Program.connstr;
this.SinhVienTableAdapter.Update(this.DS.SINHVIEN);
capNhatBtnPhucHoi();
}
catch (Exception ex)
{
MessageBox.Show("Lỗi xóa lớp. Bạn hãy xóa lại\n" + ex.Message, "",
MessageBoxButtons.OK);
this.LopTableAdapter.Fill(this.DS.LOP);
bdsLop.Position = bdsLop.Find("MALOP", maLop);
return;
}
}
if (bdsLop.Count == 0)
{
btnXoa.Enabled = false;
}
}
private void btnHieuChinh_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
{
vitri = bdsLop.Position;
groupBox1.Enabled = true;
btnThem.Enabled = btnHieuChinh.Enabled = btnXoa.Enabled = btnPhucHoi.Enabled = btnThoat.Enabled = false;
btnGhi.Enabled = btnPhucHoi.Enabled = true;
txtMaLop.Enabled = txtMaKhoa.Enabled = false;
gcLop.Enabled = false;
choose = HIEU_CHINH;
Lop lop = new Lop(txtMaLop.Text, txtTenLop.Text, txtMaKhoa.Text);
UndoLop undo = new UndoLop(HIEU_CHINH, lop);
st.Push(undo);
capNhatBtnPhucHoi();
}
private void btnPhucHoi_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
{
if (isDangThem)
{
reload();
capNhatBtnPhucHoi();
isDangThem = false;
}
bdsLop.CancelEdit();
if (btnThem.Enabled == false)
{
bdsLop.Position = vitri;
}
gcLop.Enabled = true;
groupBox1.Enabled = false;
btnThem.Enabled = btnHieuChinh.Enabled = btnXoa.Enabled = btnThoat.Enabled = true;
btnGhi.Enabled = btnPhucHoi.Enabled = false;
if (st.Count == 0)
{
return;
}
UndoLop objUndo = (UndoLop)st.Pop();
Object obj = objUndo.obj;
switch (objUndo.chucNang)
{
case THEM:
Program.ExecSqlDataReader(obj.ToString());
this.LopTableAdapter.Fill(this.DS.LOP);
capNhatBtnPhucHoi();
break;
case HIEU_CHINH:
Lop lopHieuChinh = (Lop)obj;
if (Program.conn.State == ConnectionState.Closed)
{
Program.conn.Open();
}
String sqlHieuChinh = "exec sp_PhucHoiLopHieuChinh N'" + lopHieuChinh.maLop + "',N'" + lopHieuChinh.tenLop + "'";
Program.ExecSqlDataTable(sqlHieuChinh);
//String strPhucHoiHieuChinh = "sp_PhucHoiLopHieuChinh";
//Program.sqlcmd = Program.conn.CreateCommand();
//Program.sqlcmd.CommandType = CommandType.StoredProcedure;
//Program.sqlcmd.CommandText = strPhucHoiHieuChinh;
//Program.sqlcmd.Parameters.Add("@MALOP", SqlDbType.Text).Value = lopHieuChinh.maLop;
//Program.sqlcmd.Parameters.Add("@TENLOP", SqlDbType.Text).Value = lopHieuChinh.tenLop;
//Program.sqlcmd.ExecuteNonQuery();
Program.conn.Close();
reload();
break;
case XOA:
Lop lopXoa = (Lop)obj;
if (Program.conn.State == ConnectionState.Closed)
{
Program.conn.Open();
}
String sql = "exec sp_ThemLop N'" + lopXoa + "',N'" + lopXoa.tenLop + "',N'" + lopXoa.maKhoa + "'";
Program.ExecSqlDataTable(sql);
//String strPhucHoiXoa = "sp_ThemLop";
//Program.sqlcmd = Program.conn.CreateCommand();
//Program.sqlcmd.CommandType = CommandType.StoredProcedure;
//Program.sqlcmd.CommandText = strPhucHoiXoa;
//Program.sqlcmd.Parameters.Add("@MALOP", SqlDbType.Text).Value = lopXoa.maLop;
//Program.sqlcmd.Parameters.Add("@TENLOP", SqlDbType.Text).Value = lopXoa.tenLop;
//Program.sqlcmd.Parameters.Add("@MAKHOA", SqlDbType.Text).Value = lopXoa.maKhoa;
//Program.sqlcmd.ExecuteNonQuery();
reload();
break;
}
}
private void btnGhi_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
{
switch (choose)
{
case THEM:
if (txtMaLop.Text.Trim() == "")
{
MessageBox.Show("Mã lớp không được thiếu!", "", MessageBoxButtons.OK);
txtMaLop.Focus();
return;
}
if (txtTenLop.Text.Trim() == "")
{
MessageBox.Show("Tên lớp không được thiếu!", "", MessageBoxButtons.OK);
txtTenLop.Focus();
return;
}
if (Program.conn.State == ConnectionState.Closed)
{
Program.conn.Open();
}
String strLenh = "dbo.sp_KTMALOP";
Program.sqlcmd = Program.conn.CreateCommand();
Program.sqlcmd.CommandType = CommandType.StoredProcedure;
Program.sqlcmd.CommandText = strLenh;
Program.sqlcmd.Parameters.Add("@MALOP", SqlDbType.Text).Value = txtMaLop.Text;
Program.sqlcmd.Parameters.Add("@Ret", SqlDbType.Int).Direction = ParameterDirection.ReturnValue;
Program.sqlcmd.ExecuteNonQuery();
String Ret = Program.sqlcmd.Parameters["@Ret"].Value.ToString();
if (Ret.Equals("1"))
{
MessageBox.Show("Mã lớp bị trùng!", "", MessageBoxButtons.OK);
txtMaLop.Focus();
Program.conn.Close();
return;
}
String sql = "exec dbo.sp_KTTENLOP N'" + txtTenLop.Text + "'";
DataTable dataTable = Program.ExecSqlDataTable(sql);
if (dataTable.Rows.Count > 0)
{
MessageBox.Show("Tên lớp bị trùng!");
txtTenLop.Focus();
Program.conn.Close();
return;
}
try
{
bdsLop.EndEdit();
bdsLop.ResetCurrentItem();
this.LopTableAdapter.Connection.ConnectionString = Program.connstr;
this.LopTableAdapter.Update(this.DS.LOP);
String lenhXoaLop = "exec sp_XOALOP '" + txtMaLop.Text + "'";
UndoLop undo = new UndoLop(THEM, lenhXoaLop);
st.Push(undo);
capNhatBtnPhucHoi();
}
catch (Exception ex)
{
MessageBox.Show("Lỗi ghi lớp.\n" + ex.Message, "", MessageBoxButtons.OK);
return;
}
gcLop.Enabled = true;
btnThem.Enabled = btnHieuChinh.Enabled = btnXoa.Enabled = btnPhucHoi.Enabled = btnThoat.Enabled = true;
btnGhi.Enabled = false;
groupBox1.Enabled = false;
isDangThem = false;
break;
case HIEU_CHINH:
if (txtTenLop.Text.Trim() == "")
{
MessageBox.Show("Tên lớp không được thiếu!", "", MessageBoxButtons.OK);
txtTenLop.Focus();
return;
}
if (Program.conn.State == ConnectionState.Closed)
{
Program.conn.Open();
}
String strLenhKiemTraTenLop = "dbo.sp_KTTENLOP";
Program.sqlcmd = Program.conn.CreateCommand();
Program.sqlcmd.CommandType = CommandType.StoredProcedure;
Program.sqlcmd.CommandText = strLenhKiemTraTenLop;
Program.sqlcmd.Parameters.Add("@TENLOP", SqlDbType.Text).Value = convertStringToUTF8(txtTenLop.Text.Trim());
Program.sqlcmd.Parameters.Add("@Ret", SqlDbType.Int).Direction = ParameterDirection.ReturnValue;
Program.sqlcmd.ExecuteNonQuery();
Program.conn.Close();
String RetKiemTraTenLop = Program.sqlcmd.Parameters["@Ret"].Value.ToString();
if (RetKiemTraTenLop == "1")
{
MessageBox.Show("Tên lớp bị trùng!", "", MessageBoxButtons.OK);
txtTenLop.Focus();
return;
}
try
{
bdsLop.EndEdit();
bdsLop.ResetCurrentItem();
this.LopTableAdapter.Connection.ConnectionString = Program.connstr;
this.LopTableAdapter.Update(this.DS.LOP);
}
catch (Exception ex)
{
MessageBox.Show("Lỗi hiệu chỉnh nhân viên.\n" + ex.Message, "", MessageBoxButtons.OK);
return;
}
gcLop.Enabled = true;
btnThem.Enabled = btnHieuChinh.Enabled = btnXoa.Enabled = btnPhucHoi.Enabled = btnThoat.Enabled = true;
btnGhi.Enabled = false;
groupBox1.Enabled = false;
break;
}
}
