如何获取目录最后修改日期= textboxdate并在此目录c＃获取文件 [英] how get directory last modify date = textboxdate and get file in this directory c#

问题描述

我有这么多的目录和这些目录中的文件太多了，我想获取目录最后修改日期，如果目录中的修改日期和LT =文本日期获取文件，并获得数= txtnumber得到FILEDATA怎么能我这样做...

I have so many directories and these directories has so many files, I want get directory last modify date if directory Modify date <= textbox date get files and get number = txtnumber get filedata how can I do this...

private void button1_Click(object sender, EventArgs e)
{
    string path = @"E:\Voip Caller Record\890001";
    var allfiles = System.IO.Directory.GetFiles(path, "*.*", System.IO.SearchOption.AllDirectories);       
}

推荐答案

您可以通过目录路径的的DirectoryInfo 的实例并使用的 DirectoryInfo的 类， LastWriteTime 属性来找出在目录上次写入（修改）：

You can pass the directory path to the instance of the DirectoryInfo and use the DirectoryInfo class, LastWriteTime property to figure out when the directory was last written to (modified):

DirectoryInfo info = new DirectoryInfo("myDirPath");
if (info.LastWriteTime > someDate){
    var allfiles = Directory.GetFiles(path, "*.*", System.IO.SearchOption.AllDirectories);
    //do something on allfiles
}

如果这是最后一次一定时间后写的，那么你所表现出什么让该目录中的所有文件，你可以继续你想要的。

If it was last written after certain time, then get all the files in that directory by what you have shown and you could proceed as you want.

编辑：

如果您需要子目录，而不是文件，你可以使用 Directory.GetDirectories（）来代替。并获得该目录上次写入时间，只需做同样的事情如上：

If you need sub-directories instead of files, you could use Directory.GetDirectories() instead. And to get the directory last write time, simply do the same thing as above:

var alldirs = Directory.GetDirectories("myRootPath")
    .Select(x => new DirectoryInfo(x));
foreach (var dir in alldirs) {
    if (dir.LastWriteTime > someDateTime) {
        //do something
    }
}

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