从4天以上的文件夹中删除文件 [英] Delete files from the folder older than 4 days

问题描述

我想每5个小时运行一个计时器，并从4天以上的文件夹中删除文件。可以用示例代码吗？

I would like to run a timer for every 5 hours and delete the files from the folder older than 4 days. Could you please with sample code?

推荐答案

由于尚未提及，我建议使用 System.Threading.Timer 这样的东西。这是一个示例实现：

Since it hasn't been mentioned, I would recommend using a System.Threading.Timer for something like this. Here's an example implementation:

System.Threading.Timer DeleteFileTimer = null;

private void CreateStartTimer()
{
    TimeSpan InitialInterval = new TimeSpan(0,0,5);
    TimeSpan RegularInterval = new TimeSpan(5,0,0);

    DeleteFileTimer = new System.Threading.Timer(QueryDeleteFiles, null, 
            InitialInterval, RegularInterval);

}

private void QueryDeleteFiles(object state)
{
    //Delete Files Here... (Fires Every Five Hours).
    //Warning: Don't update any UI elements from here without Invoke()ing
    System.Diagnostics.Debug.WriteLine("Deleting Files...");
}

private void StopDestroyTimer()
{
    DeleteFileTimer.Change(System.Threading.Timeout.Infinite,
    System.Threading.Timeout.Infinite);

    DeleteFileTimer.Dispose();
}

这样，您可以在Windows服务中运行文件删除代码麻烦

This way, you can run your file deletion code in a windows service with minimal hassle.

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