private void DanhSachXa_Click_1(object sender, EventArgs e)
 {
     if (Xafrm == null || Xafrm.IsDisposed)
     {
         Xafrm           = new frmXa();
         Xafrm.MdiParent = this;
         Xafrm.Show();
     }
     else
     {
         Xafrm.Activate();
     }
 }
Esempio n. 2
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        private void ThemXa_Click(object sender, EventArgs e)
        {
            frmXa X = new frmXa();

            X.ShowDialog();
        }