private void BtnEdit_Click(object sender, EventArgs e)
        {
            //Check for if TeamLeader before ProductionWorker
            //Because TeamLeader objs are ProductionWorker
            if (lstEmployeeList.SelectedItem is TeamLeader)
            {
                TeamLeader employee = (TeamLeader)lstEmployeeList.SelectedItem;
                using (frmEmployee editEmployeeForm = new frmEmployee(2))
                {
                    //Set form feilds to employees values
                    editEmployeeForm.txtName.Text         = employee.EmpName;
                    editEmployeeForm.txtInput1.Text       = employee.ShiftNumber.ToString();
                    editEmployeeForm.txtInput2.Text       = employee.PayRate.ToString();
                    editEmployeeForm.txtReqTrainHrs.Text  = employee.RequiredTrainingHours.ToString();
                    editEmployeeForm.txtActTrainHrs.Text  = employee.ActualTrainingHours.ToString();
                    editEmployeeForm.txtMonthlyBonus.Text = employee.MonthlyBonus.ToString();
                    editEmployeeForm.ShowDialog();
                    if (editEmployeeForm.DialogResult == DialogResult.OK)
                    {
                        //Update employee information
                        string name = editEmployeeForm.txtName.Text;
                        int    shift, reqHrs, actHrs;
                        int.TryParse(editEmployeeForm.txtInput1.Text, out shift);
                        int.TryParse(editEmployeeForm.txtReqTrainHrs.Text, out reqHrs);
                        int.TryParse(editEmployeeForm.txtActTrainHrs.Text, out actHrs);
                        decimal pay, bonus;
                        decimal.TryParse(editEmployeeForm.txtInput2.Text, out pay);
                        decimal.TryParse(editEmployeeForm.txtMonthlyBonus.Text, out bonus);
                        lstEmployeeList.Items.Remove(employee);
                        lstEmployeeList.Items.Add(employee);
                    }
                }
            }

            else if (lstEmployeeList.SelectedItem is ProductionWorker)
            {
                ProductionWorker employee = (ProductionWorker)lstEmployeeList.SelectedItem;
                using (frmEmployee editEmployeeForm = new frmEmployee(1))
                {
                    //Set form feilds to employees values
                    editEmployeeForm.txtName.Text   = employee.EmpName;
                    editEmployeeForm.txtInput1.Text = employee.ShiftNumber.ToString();
                    editEmployeeForm.txtInput2.Text = employee.PayRate.ToString();
                    editEmployeeForm.ShowDialog();
                    if (editEmployeeForm.DialogResult == DialogResult.OK)
                    {
                        //Update employee information
                        string name = editEmployeeForm.txtName.Text;
                        int    shift;
                        int.TryParse(editEmployeeForm.txtInput1.Text, out shift);
                        decimal pay;
                        decimal.TryParse(editEmployeeForm.txtInput2.Text, out pay);
                        employee.EmpName     = name;
                        employee.ShiftNumber = shift;
                        employee.PayRate     = pay;
                        lstEmployeeList.Items.Remove(employee);
                        lstEmployeeList.Items.Add(employee);
                    }
                }
            }

            else if (lstEmployeeList.SelectedItem is ShiftSupervisor)
            {
                ShiftSupervisor employee = (ShiftSupervisor)lstEmployeeList.SelectedItem;
                using (frmEmployee editEmployeeForm = new frmEmployee(2))
                {
                    //Set form feilds to employees values
                    editEmployeeForm.txtName.Text   = employee.EmpName;
                    editEmployeeForm.txtInput1.Text = employee.AnnualSalary.ToString();
                    editEmployeeForm.txtInput2.Text = employee.AnnualProductionBonus.ToString();
                    editEmployeeForm.ShowDialog();
                    if (editEmployeeForm.DialogResult == DialogResult.OK)
                    {
                        //Update employee information
                        string  name = editEmployeeForm.txtName.Text;
                        decimal salary;
                        decimal.TryParse(editEmployeeForm.txtInput1.Text, out salary);
                        decimal bonus;
                        decimal.TryParse(editEmployeeForm.txtInput2.Text, out bonus);
                        lstEmployeeList.Items.Remove(employee);
                        lstEmployeeList.Items.Add(employee);
                    }
                }
            }
        }