private void MenuItem_MouseDown(object sender, MouseButtonEventArgs e)
{
WpfApp7.siyahzeytin zeytin = new siyahzeytin();
this.Close();
zeytin.ShowDialog();
}
private void siyahzeytin_Click(object sender, RoutedEventArgs e)
{
WpfApp7.siyahzeytin zeytin = new siyahzeytin();
this.Close();
zeytin.ShowDialog();
}