/// <summary>
/// Initializes a new instance of the MainViewModel class.
/// The class gets an instance of The DataAccessService
/// </summary>
public MainViewModel(IDataAccessService servPxy)
{
_serviceProxy = servPxy;
Employees = new ObservableCollection<EmployeeInfo>();
EmpInfo = new EmployeeInfo();
ReadAllCommand = new RelayCommand(GetEmployees);
SaveCommand = new RelayCommand<EmployeeInfo>(SaveEmployee);
SearchCommand = new RelayCommand(SearchEmployee);
SendEmployeeCommand = new RelayCommand<EmployeeInfo>(SendEmployeeInfo);
ReceiveEmployeeInfo();
}
/// <summary>
/// Method to Save Employees. Once the Employee is added in the database
/// it will be added in the Employees observable collection and Property Changed will be raised
/// </summary>
/// <param name="emp"></param>
void SaveEmployee(EmployeeInfo emp)
{
EmpInfo.EmpNo = _serviceProxy.CreateEmployee(emp);
if(EmpInfo.EmpNo!=0)
{
Employees.Add(EmpInfo);
RaisePropertyChanged("EmpInfo");
}
}
/// <summary>
/// The method to send the selected Employee from the DataGrid on UI
/// to the View Model
/// </summary>
/// <param name="emp"></param>
void SendEmployeeInfo(EmployeeInfo emp)
{
if(emp!=null)
{
Messenger.Default.Send<MessageCommunicator>(new MessageCommunicator() {
Emp = emp
});
}
}
public int CreateEmployee(EmployeeInfo Emp)
{
context.EmployeeInfoes.Add(Emp);
context.SaveChanges();
return Emp.EmpNo;
}