private void btnSave_Click(object sender, EventArgs e)
        {
            if (txtPosition.Text.Trim() == "")
            {
                MessageBox.Show("Please fill the position name");
            }

            else if (cmbDepartment.SelectedIndex == -1)
            {
                MessageBox.Show("Please select a department");
            }

            else
            {
                if (!isUpdated)
                {
                    POSITION position = new POSITION();
                    position.Position1 = txtPosition.Text;
                    position.DepID     = Convert.ToInt32(cmbDepartment.SelectedValue);
                    PositionBLL.AddPosition(position);
                    MessageBox.Show("Position added");
                    txtPosition.Clear();
                    cmbDepartment.SelectedIndex = -1;
                }
                else
                {
                    POSITION position = new POSITION();
                    position.ID        = detail.ID;
                    position.Position1 = txtPosition.Text;
                    position.DepID     = Convert.ToInt32(cmbDepartment.SelectedValue);
                    bool control = false;
                    if (Convert.ToInt32(cmbDepartment.SelectedValue) != detail.OldDepartmentID)
                    {
                        control = true;
                    }
                    PositionBLL.UpdatePosition(position, control);
                    MessageBox.Show("Position updated!");
                    this.Close();
                }
            }
        }