private void button1_Click(object sender, EventArgs e)
{
if (tambahData == null)
{
tambahData = new TambahData();
tambahData.FormClosed += new FormClosedEventHandler(formcloseTambahData);
tambahData.ShowDialog();
}
else
{
tambahData.Activate();
}
}
void formcloseTambahData(object sender, FormClosedEventArgs e)
{
tambahData = null;
}
