c# winfrom 更新控件时停止刷新，解决闪烁问题

 static Dictionary<Control, bool> m_lstFreezeControl = new Dictionary<Control, bool>();
        /// <summary>
        /// 功能描述:停止更新控件
        /// </summary>
        /// <param name="control">control</param>
        /// <param name="blnToFreeze">是否停止更新</param>
        public static void FreezeControl(Control control, bool blnToFreeze)
        {
            if (blnToFreeze && control.IsHandleCreated && control.Visible && !control.IsDisposed && (!m_lstFreezeControl.ContainsKey(control) || (m_lstFreezeControl.ContainsKey(control) && m_lstFreezeControl[control] == false)))
            {
                m_lstFreezeControl[control] = true;
                control.Disposed += control_Disposed;
                HZCX.Controls.Controls.NativeMethods.SendMessage(control.Handle, 11, 0, 0);
            }
            else if (!blnToFreeze && !control.IsDisposed && m_lstFreezeControl.ContainsKey(control) && m_lstFreezeControl[control] == true)
            {
                m_lstFreezeControl.Remove(control);
                HZCX.Controls.Controls.NativeMethods.SendMessage(control.Handle, 11, 1, 0);
                control.Invalidate(true);
            }
        }

        static void control_Disposed(object sender, EventArgs e)
        {
            try
            {
                if (m_lstFreezeControl.ContainsKey((Control)sender))
                    m_lstFreezeControl.Remove((Control)sender);
            }
            catch { }
        }

            try
            {
                HZCX.Controls.ControlHelper.FreezeControl(this, true);
                //你的更新界面操作
            }
            finally
            {
                HZCX.Controls.ControlHelper.FreezeControl(this, false);
            }