private void Button_Click(object sender, RoutedEventArgs e)
{
// добавить
var form = new MeetingAdd();
form.Show();
}
private void Button_Click_1(object sender, RoutedEventArgs e)
{
var meeting = ListMeetings.SelectedItem as Meetings;
if (meeting != null)
{
var form = new MeetingAdd(meeting);
form.Show();
}
}