private void removeUserClicked(object sender, RoutedEventArgs e)
 {
     Button button = e.Source as Button;
     if (button == null)
     {
         return;
     }
     GroupMemberModel user = button.DataContext as GroupMemberModel;
     if (user == null)
     {
         return;
     }
     ConfirmationDialog errorDialog = new ConfirmationDialog();
     errorDialog.Owner = this;
     errorDialog.Title = "Confirmation Required";
     errorDialog.ConfirmationDetails.Message = "Are you sure you want to remove this user?";
     if (errorDialog.ShowDialog() == true)
     {
         model.RemoveMember(user);
     }
 }
        private void removeUserClicked(object sender, RoutedEventArgs e)
        {
            Button button = e.Source as Button;

            if (button == null)
            {
                return;
            }
            GroupMemberModel user = button.DataContext as GroupMemberModel;

            if (user == null)
            {
                return;
            }
            ConfirmationDialog errorDialog = new ConfirmationDialog();

            errorDialog.Owner = this;
            errorDialog.Title = "Confirmation Required";
            errorDialog.ConfirmationDetails.Message = "Are you sure you want to remove this user?";
            if (errorDialog.ShowDialog() == true)
            {
                model.RemoveMember(user);
            }
        }