/// <summary>
/// Method to Save User. Once the User is added in the database
/// it will be added in the Users observable collection and Property Changed will be raised
/// </summary>
/// <param name="user"></param>
void SaveUser(User user)
{
Color bgcolor = Color.Black;
Color fcolor = Color.WhiteSmoke;
Image image = ConvertTextToImage(user.FirstName.Substring(0, 1) + user.LastName.Substring(0,1), "Times New Roman", 25, bgcolor, fcolor, 50, 50);
user.UserPhoto = ImageToByteArray(image);
_dataService.CreateUser(
(UserId, error) =>
{
if (error != null)
{
// Report error here
Console.WriteLine("The following exception has been raised: " + error);
return;
}
if (UserId != 0)
{
//Close the current focused window
var window = Application.Current.Windows.OfType<Window>().SingleOrDefault(x => x.IsActive);
window.Close();
//Send a message to Main ViewModel for refreshing the People on the MainWindow.
Messenger.Default.Send(new NotificationMessage("RefreshUsers"), MessengerToken.RefreshUsers);
}
}, user);
}
//Method to add user
public void CreateUser(Action<int, Exception> callback, User user)
{
try
{
//Check if a tuple in the table is present in the database, and add it, if it's not available.
if (ctx.Entry(user).State == System.Data.Entity.EntityState.Detached)
{
ctx.Users.Add(user);
}
ctx.SaveChanges();
callback(user.UserId, null);
}
catch (Exception e)
{
callback(0, e);
}
}
/// <summary>
/// The method to send a message to add a new user
/// to the UserViewModel
/// </summary>
public void SendUser()
{
User user = new User();
//Send User as a message to UserViewModel for opening a new window.
Messenger.Default.Send<MessageCommunicator>(new MessageCommunicator() { User = user }, MessengerToken.AddUser);
}
