关闭屏幕更新并将其重新打开(如果它已开启)？

Question

在运行使用Excel的过程时,我通常会在过程开始时关闭某些应用程序设置,然后在过程结束时再次打开它们.

关闭和打开应用程序设置的代码:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace XLTimeTracker
{
    class API
    {
        public static void TurnAppSettingsOff()
        {
            AddinModule.CurrentInstance.ExcelApp.EnableEvents = false;
            AddinModule.CurrentInstance.ExcelApp.ScreenUpdating = false;
        }

        public static void TurnAppSettingsOn()
        {
            if (AddinModule.CurrentInstance.ExcelApp == null) return;

            AddinModule.CurrentInstance.ExcelApp.EnableEvents = true;
            AddinModule.CurrentInstance.ExcelApp.ScreenUpdating = true;
        }
    }
}

我用以下方式调用此过程:

API.TurnAppSettingsOff();
// my code
API.TurnAppSettingsOn();

这很好用.

但是说我只想打开我跑前的应用程序设置API.TurnAppSettingsOff().什么是编码的好方法？

一些想法:

• 我想我需要以某种方式保存应用程序设置的先前状态.例如通过写:

Boolean screenUpdating = AddinModule.CurrentInstance.ExcelApp.ScreenUpdating;

• 我希望最终结果是正确的,即使关闭和打开appsettings的函数也调用另一个关闭和打开应用程序设置的功能.

• 我不知道这是否是最好设置使用一个命令的所有设置,例如API.TurnAppSettingsOff(),或者这将是明智的用户API.TurnScreenUpdatingOff()和API.TurnEventsOff().

Answer 1

您可以使用该类Stack<T>来实现后进先出 (LIFO) 行为。

struct ExcelEventSettings
{
    public bool EnableEvents;
    public bool ScreenUpdating;
}

class Example
{
    private Stack<ExcelEventSettings> settingStack = new Stack<ExcelEventSettings>();

    // you can call this function as often as you called SaveAppSettings
    public void RestoreAppSettings()
    {
        if (settingStack.Count == 0)
            throw new Exception("There is no previous state!");

        ExcelEventSettings prevState = settingStack.Pop();

        setCurrentEnableEvents(prevState.EnableEvents);
        setCurrentScreenUpdating(prevState.ScreenUpdating);
    }

    public void SetAppSettings(bool enableEvents, bool screenUpdating)
    {
        ExcelEventSettings currentState;

        currentState.EnableEvents = getCurrentEnableEvents();
        currentState.ScreenUpdating = getCurrentScreenUpdating();

        settingStack.Push(currentState);

        setCurrentScreenUpdating(enableEvents);
        setCurrentEnableEvents(screenUpdating);
    }

    private bool getCurrentEnableEvents()
    {
       // Here you would call your Excel function
    }

    private bool getCurrentScreenUpdating()
    {
       // Here you would call your Excel function
    }

    private void setCurrentEnableEvents(bool value)
    {
        // Here you would call your Excel function
    }

    private void setCurrentScreenUpdating(bool value)
    {
        // Here you would call your Excel function
    }
}