Question

i have a LoginWindow with username and password to access in the software after that the user authenticated i want show in the next window(the mainWindow of the software) the name of the user authenticated in a TextBlock …i show a code snippet of my LoginWindow:

public partial class Window1 : Window {     public Window1()     {         InitializeComponent();     }      public bool ValidateApplicationUser(string userName, string password)     {       {             var AuthContext = new DataClasses1DataContext();             var query = from c in  AuthContext.Users                         where (c.Username == userName.ToLower() && c.Password == password.ToLower())                         select c;              if(query.Count() != 0 )             {                 return true;             }              return false;         }     }      private void mahhh(object sender, RoutedEventArgs e)     {         bool authenticated = true;         {             if (usernameTextBox.Text !='' && passwordTextBox.Text != '')             {                 authenticated = ValidateApplicationUser(usernameTextBox.Text , passwordTextBox.Text);             }         }         if (!authenticated)         {             MessageBox.Show('Invalid login. Try again.');         }         else         {             MessageBox.Show('Congradulations! You're a valid user!');             MainWindow c = new MainWindow();             c.ShowDialog();         }     } } 

If I authenticate with the username’Marc’ in the MainWindow i will show the username ‘Marc’ in a TextBlock and I don’t know I make it? How I can do it?

Answer 1

Simply, Pass the UserName to the constructor of the Main window like this

MainWindow c = New MainWindow(usernameTextBox.Text); 

And in the constructor of the main window receive the value in variable and do whatever you want with it, like this

private String _userName;  public MainWindow(string userName) {      _userName = userName }