private bool IsNewChildFormAndIfOldThenActivate ( string sFormName )
    {
    for (int x =  0 ; x < this.MdiChildren.Length; x++)
        {
        Form frmChild = (Form)this.MdiChildren[x];
        if (frmChild.Name == sFormName)
            {
             frmChild.Activate();
             return true;
            }
        } // end of  -- for (int x = 0; x < this.MdiChildren.Length; x++)
 
    return false;
    }