private void MenuItem_Click_1(object sender, RoutedEventArgs e)
{
AddNewCollection addNewCollection = new AddNewCollection(this);
addNewCollection.Owner = this;
addNewCollection.ShowDialog();
}
private void Button_Click_1(object sender, RoutedEventArgs e)
{
AddNewCollection addCollection = new AddNewCollection(this);
addCollection.Owner = this;
addCollection.ShowDialog();
}