public ReadOnlyRDViewModel(ReadOnlyRDView viewOpen)
        {
            employee = new tblEmployee();
            view     = viewOpen;

            EmployeeList = service.GetAllEmployees();
        }
 private void LogInExecute()
 {
     try
     {
         if (service.IsEmployee(UserName, Password))
         {
             try
             {
                 using (EmployeeEntities context = new EmployeeEntities())
                 {
                     tblEmployee employee = (from x in context.tblEmployees where x.UserName == userName && x.Pass == password select x).First();
                     File.WriteAllText(@"..\..\ID.txt", Convert.ToString(employee.EmployeeID));
                 }
             }
             catch
             {
             }
             if (service.Role(UserName, Password) == "employee")
             {
                 Employee employee = new Employee();
                 employee.ShowDialog();
             }
             else if (service.Role(UserName, Password) == "modify-HR")
             {
                 ModifyHRView mhr = new ModifyHRView();
                 mhr.ShowDialog();
             }
             else if (service.Role(UserName, Password) == "modify-R&D")
             {
                 ModifyRDView mrd = new ModifyRDView();
                 mrd.ShowDialog();
             }
             else if (service.Role(UserName, Password) == "modify-Finances")
             {
                 ModifyFinancesView mf = new ModifyFinancesView();
                 mf.ShowDialog();
             }
             else if (service.Role(UserName, Password) == "read-only-HR")
             {
                 ReadOnlyHRView rohr = new ReadOnlyHRView();
                 rohr.ShowDialog();
             }
             else if (service.Role(UserName, Password) == "read-only-R&D")
             {
                 ReadOnlyRDView rord = new ReadOnlyRDView();
                 rord.ShowDialog();
             }
             else if (service.Role(UserName, Password) == "read-only-Finances")
             {
                 ReadOnlyFinancesView rof = new ReadOnlyFinancesView();
                 rof.ShowDialog();
             }
         }
         else if (UserName == "WPFadmin" && Password == "WPFadmin")
         {
             Admin admin = new Admin();
             admin.ShowDialog();
         }
         else
         {
             MessageBox.Show("Username or password incorrect.");
         }
     }
     catch (Exception ex)
     {
         MessageBox.Show(ex.ToString());
     }
 }