private void mnuLezort_Click(object sender, EventArgs e)
{
frmLezort frm = frmLezort.GetInstancia();
frm.MdiParent = this;
frm.Show();
}
public static frmLezort GetInstancia()
{
if (_instancia == null)
{
_instancia = new frmLezort();
}
return(_instancia);
}
private void frmLezort_FormClosing(object sender, FormClosingEventArgs e)
{
_instancia = null;
}
