private void merekToolStripMenuItem_Click(object sender, EventArgs e)
{
var merekForm = new FormMerek();
merekForm.MdiParent = this;
merekForm.Show();
}
private void merekKendaraanToolStripMenuItem_Click(object sender, EventArgs e)
{
FormMerek fk = new FormMerek();
fk.ShowDialog();
}