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c# - C# Winform：对 FileSystemWatcher 路径使用全局变量

问题描述

我有一个带有两个 FileSystemWatcher 控件的表单。路径是通用的，我们需要在路径不同的多个环境中进行部署。我用我的全局变量在 Program.cs 中创建了一个类。

程序.cs

public static class Global {
    public const string connString = "<connection info>";
    public const string txtWatchPath = @"c:\test";
    public const string sumWatchPath = @"C:\Import";
}

我的观察者最初是这样设置的：

Form_Status.Designer.cs

// 
// txtWatcher
// 
this.txtWatcher.EnableRaisingEvents = true;
this.txtWatcher.Filter = "*_hdr.txt";
this.txtWatcher.NotifyFilter = System.IO.NotifyFilters.LastWrite;
this.txtWatcher.Path = Global.txtWatchPath;
this.txtWatcher.SynchronizingObject = this;
this.txtWatcher.Changed += new System.IO.FileSystemEventHandler(this.txtWatcher_Changed);
// 
// sumWatcher
// 
this.sumWatcher.EnableRaisingEvents = true;
this.sumWatcher.Filter = "*_hdr.sum";
this.sumWatcher.Path = Global.sumWatchPath;
this.sumWatcher.SynchronizingObject = this;
this.sumWatcher.Changed += new System.IO.FileSystemEventHandler(this.sumWatcher_Changed);

它最初可以工作，但是当我重新加载项目时，它们会解析为路径而不是全局变量。

Form_Status.Designer.cs

// 
// txtWatcher
// 
this.txtWatcher.EnableRaisingEvents = true;
this.txtWatcher.Filter = "*_hdr.txt";
this.txtWatcher.NotifyFilter = System.IO.NotifyFilters.LastWrite;
this.txtWatcher.Path = "c:\\test";
this.txtWatcher.SynchronizingObject = this;
this.txtWatcher.Changed += new System.IO.FileSystemEventHandler(this.txtWatcher_Changed);
// 
// sumWatcher
// 
this.sumWatcher.EnableRaisingEvents = true;
this.sumWatcher.Filter = "*_hdr.sum";
this.sumWatcher.Path = "C:\\Import";
this.sumWatcher.SynchronizingObject = this;
this.sumWatcher.Changed += new System.IO.FileSystemEventHandler(this.sumWatcher_Changed);

当我在设计器中创建控件时，我只是将路径设置为“C:\”，然后创建全局变量，并设置 .Path = 全局变量。
但是，当我保存项目时，全局变量被解析为实际路径。这意味着当我更改全局类上的路径变量时，它不会更改观察者的路径。

标签： c#winformsfilesystemwatcher

解决方案

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