private void đơnVịThiCôngToolStripMenuItem_Click(object sender, EventArgs e) { if (dvtc == null || dvtc.IsDisposed) { dvtc = new FrmDonVi_TC(); } dvtc.ShowDialog(); }
private void đơnVịThiCôngToolStripMenuItem_Click(object sender, EventArgs e) { FrmDonVi_TC dvtc = new FrmDonVi_TC(); dvtc.Show(); }