private void btnLogin_Click(object sender, RoutedEventArgs e) { AppUser appUser = generalOperation.GetLoginUser(tbxUserName.Text, tbxPasswordName.Password); if (appUser == null) { MessageBox.Show("Kullanıcı Adı Veya Şifre Hatalı"); } else { StaticUser.SetUser(appUser); Home home = new Home(); home.Show(); this.Close(); } CleanProperty(); }