public HomeViewModel()
{
try
{
if (Users == null)
Users = new ObservableCollection<User>();
if (UserInfo == null)
UserInfo = new User();
MCountry = new ObservableCollection<string>(
from c in context.Users
group c by c.Country into g
select g.Key);
context = new Amol_LearningEntities();
CreateCommand = new RelayCommand<User>(CreateUser, CreateCanExecute);
DeleteCommand = new RelayCommand<User>(DeleteUser);
EditCommand = new RelayCommand<User>(param => EditUser(param));
NewCommand = new RelayCommand<string>(param => NewUser(param));
ReceiveUserInfo();
RefreshData();
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
private void NewUser(string obj)
{
User userObj = new User();
userObj.Id = Convert.ToInt32(context.Users.Select(x => x.Id).Max()) + 1;
var msg = new GoToMessagePage() { UserObj = userObj, PageName = "NewView", ButtonContentMsg = obj };
Messenger.Default.Send<GoToMessagePage>(msg);
}
private void EditUser(User userObj)
{
if (userObj != null)
{
var msg = new GoToMessagePage() { UserObj = userObj, PageName = "NewView", ButtonContentMsg = "Update" };
Messenger.Default.Send<GoToMessagePage>(msg);
}
}
private void DeleteUser(User param)
{
MessageBoxResult messageBoxResult = MessageBox.Show("Are you sure?", "Delete Confirmation", MessageBoxButton.YesNo);
if (messageBoxResult == MessageBoxResult.Yes)
{
context.Users.Remove(param);
context.SaveChanges();
RefreshData();
}
}
private void CreateUser(User obj)
{
try
{
obj.LastName = "Test";
obj.Password = "******";
context.Users.Add(obj);
context.SaveChanges();
RefreshData();
MessageBox.Show("New User Created Sucessfully");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
bool CreateCanExecute(User p_objUser)
{
Regex regxEmail = new Regex(@"^([\w\.\-]+)@([\w\-]+)((\.(\w){2,3})+)$");
bool isUserName = String.IsNullOrEmpty(p_objUser.UserName) ? false : true;
bool isCountry = String.IsNullOrEmpty(SelectedCountry) ? false : true;
bool isCity = String.IsNullOrEmpty(p_objUser.City) ? false : true;
bool isAddress = String.IsNullOrEmpty(p_objUser.Address) ? false : true;
bool isEmail = String.IsNullOrEmpty(p_objUser.email) ? false : (regxEmail.Match(p_objUser.email) == Match.Empty) ? false : true;
if (isUserName && isCountry && isCity && isEmail && isAddress)
{
return true;
}
return false;
}
