public Form_InputLotId()
 {
     InitializeComponent();
     DialogResult = DialogResult.Cancel;
     this.Icon    = System.Drawing.Icon.ExtractAssociatedIcon(Application.ExecutablePath);
     Instance     = this;
 }
        /// <summary>
        /// 显示本窗体的一个模态窗体实例
        /// </summary>
        public static void ShowDialogForm()
        {
            Form_InputLotId frm = Form_InputLotId.Instance;

            if (frm != null)
            {
                if (!frm.IsDisposed)
                {
                    Form_InputLotId.Instance.Dispose();
                }
            }
            Form_InputLotId.Instance = new Form_InputLotId();
            frm = Form_InputLotId.Instance;
            int SH = Screen.PrimaryScreen.Bounds.Height;
            int SW = Screen.PrimaryScreen.Bounds.Width;

            //frm.Location = new Point((SW - frm.Size.Width) / 2, (SH - frm.Size.Height) / 2);
            frm.StartPosition = FormStartPosition.CenterParent;
            //App.mainWin.Enabled = false;
            Form_InputLotId.Instance.textBox1.Focus();
            frm.ShowDialog();
            //App.mainWin.Enabled = true;
        }