private void btnRehber_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
{
if (rehber == null)
{
rehber = new Rehber();
rehber.MdiParent = this;
rehber.Show();
}
}
private void barButtonItem35_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
{
if (Application.OpenForms["Rehber"] == null)
{
Forms.Rehber rehber = new Rehber();
rehber.MdiParent = this;
rehber.Show();
}
}