private void InDBToolStripMenuItem_Click(object sender, EventArgs e)
{
if (DisplayFromDB == null)
{
DisplayFromDB = new DisplayAllFromDB();
DisplayFromDB.MdiParent = this;
DisplayFromDB.FormClosed += DisplayFromDB_FormClosed;
DisplayFromDB.Show();
}
else
{
DisplayFromDB.Activate();
}
}
private void DisplayFromDB_FormClosed(object sender, FormClosedEventArgs e)
{
DisplayFromDB = null;
}