private void btnSave_Click(object sender, EventArgs e)
        {
            try
            {
                if (txtName.Text.Trim() != "" && txtSurName.Text.Trim() != "" && txtIdNumber.Text.Trim() != "")
                {
                    staff = new Staff()
                    {
                        ID                  = _ID,
                        StaffName           = txtName.Text.Trim(),
                        StaffSurName        = txtSurName.Text.Trim(),
                        StaffIDNumber       = txtIdNumber.Text.Trim(),
                        StaffMobilePhone    = txtmPhone.Text.Trim(),
                        StaffHomePhone      = txthPhone.Text.Trim(),
                        StaffAddress        = txtAddress.Text.Trim(),
                        StaffSalary         = Convert.ToInt32(txtSalary.Text.Trim()),
                        StaffCheckoutNumber = Convert.ToInt32(txtChckoutNum.Text.Trim()),
                        StaffDateStart      = dtpStart.Value.ToString().Trim(),
                        StaffDateQuit       = dtpQuit.Value.ToString().Trim()
                    };
                }
                else
                {
                    if (txtName.Text.Trim() == "")
                    {
                        nameLabel.ForeColor = System.Drawing.Color.Red;
                    }
                    if (txtSurName.Text.Trim() == "")
                    {
                        surnameLabel.ForeColor = System.Drawing.Color.Red;
                    }
                    if (txtIdNumber.Text.Trim() == "")
                    {
                        idNumberLbl.ForeColor = System.Drawing.Color.Red;
                    }

                    MessageBox.Show("Please Fill The Required Areas!!");
                }

                if (_ID == 0)
                {
                    staffManager = new StaffManager();
                    staffManager.Save(staff);
                    MessageBox.Show("Register Successfull!");
                    staff_Transactions = new staff_transactions();
                    staff_Transactions.FillGrid();
                }
                else
                {
                    staffManager = new StaffManager();
                    staffManager.Update(staff);
                    MessageBox.Show("Update Successfull!");
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("Saving Unsuccessfull " + ex.Message.ToString());
            }
        }
 private void btnStaffTrans_Click(object sender, EventArgs e)
 {
     staff_Transactions = new staff_transactions();
     staff_Transactions.Show();
 }
 private void btnClose_Click(object sender, EventArgs e)
 {
     staff_Transactions = new staff_transactions();
     staff_Transactions.Show();
     this.Close();
 }