private void barButtonItem1_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
 {
     if (ana == null || ana.IsDisposed)
     {
         ana           = new frmAnsayfa();
         ana.MdiParent = this;
         ana.Show();
     }
 }
 private void Home_Load(object sender, EventArgs e)
 {
     if (ana == null || ana.IsDisposed)
     {
         ana           = new frmAnsayfa();
         ana.MdiParent = this;
         ana.Show();
     }
 }