private void button6_Click_1(object sender, EventArgs e)
{
manage_books mb = new manage_books();
this.Close();
mb.Show();
}
private void manageBooksInfoToolStripMenuItem_Click(object sender, EventArgs e)
{
bool Isopen = false;
foreach (Form f in Application.OpenForms)
{
if (f.Text == "manage_books")
{
Isopen = true;
f.BringToFront();
break;
}
}
if (Isopen == false)
{
manage_books mb = new manage_books();
mb.Show();
}
}