private bool FileSave()
        {
            Cursor.Current = Cursors.WaitCursor;

            try
            {
                if (!DataIsValid())
                {
                    return(false);
                }


                // Update MANDATORY COMPUTATIONS
                foreach (var emp in ListOfEmployees)
                {
                    emp.Deductions.LoadAllItemsWithDeduction();
                    DeductionGenerator.UpdateMandatoryDeductions(emp);
                    var mandatoryWriter = new PayrollEmployeeDataWriter(App.CurrentUser.User.Username, emp);
                    mandatoryWriter.SaveChanges();
                }


                //ItemData.Id =  ;
                ItemData.PayrollType = "Regular";
                ItemData.DateCovered = dtPeriod.Value;
                ItemData.Remarks     = txtRemarks.Text;


                var generator = new PayrollGenerator();

                pbStatus.Maximum = ListOfEmployees.Count();
                pbStatus.Text    = "";
                pbStatus.Visible = true;

                pbStatus.Refresh();

                generator.Generate(ItemData, ListOfEmployees, OnProgress);


                var writer = new PayrollPeriodDataWriter(App.CurrentUser.User.Username, ItemData);
                writer.SaveChanges();

                App.LogAction("Payroll", "Generated New Payroll :" + dtPeriod.Value.ToString("yyyy MMMM dd"));
                return(true);
            }
            catch (Exception ex)
            {
                MessageDialog.ShowError(ex, this);
                return(false);
            }
        }
        protected PayrollEmployee OnAdd()
        {
            // Find Employee Id
            var employeeId = 0;

            using (var frm = new frmEmployee_Open())
            {
                if (frm.ShowDialog() != DialogResult.OK)
                {
                    return(null);
                }
                employeeId = frm.EmployeeId;
            }


            // Check for Duplicate
            var duplicate = new PayrollEmployeeDataReader().HasExistingId(employeeId);

            if (duplicate)
            {
                MessageDialog.Show("Duplicate Record", "An existing Record with same employee already exists");
                return(null);
            }


            // Get Employee Profile
            var employee = new EmployeeDataReader().GetBasicProfileOf(employeeId);

            if (employee == null)
            {
                throw new Exception("Record NOT found");
            }


            // Create New Payroll Employee
            var newItem = new PayrollEmployee
            {
                EmployeeId    = employee.Id,
                EmployeeClass = employee,
                Active        = true
            };


            // Mandatory Deductions
            newItem.Deductions.AddMandatoryDeductions();
            DeductionGenerator.UpdateMandatoryDeductions(newItem);


            using (var frm = new frmPayrollEmployee_Add())
            {
                frm.ItemData = newItem;
                if (frm.ShowDialog() != DialogResult.OK)
                {
                    return(null);
                }
            }


            App.LogAction("Payroll", "Added Employee : " + newItem.EmployeeClass.EmpNum);

            return(newItem);
        }