如何使用directory.getfiles获取多个文件名。 [英] How do I get multiple file names with directory.getfiles.

问题描述

大家好：



以下方法是获取某些文件并将其写入1个单独的文件



这是我的代码：

Hi guys :

the following method is to get certain files and will write them into 1 single file

This is my code :

string[] inputFilePaths = Directory.GetFiles("//path to directory", "*.txt.2018-" + DateTime.Now.ToString("MM") + "-*");


           using (StreamWriter outputStream = new StreamWriter("path to output file" + DateTime.Now.ToString("MM-yyyy") + "-Statistics.txt",false))
           {
               foreach (var inputFilePath in inputFilePaths)
               {
                   using (var inputStream = new StreamReader(inputFilePath))
                   {
                      outputStream.Write(inputStream.ReadToEnd());
                   }

               }
           }

在目录中有以下文件：



TodayLog.txt x

TodayLog.txt.2018-08-08 x

TodayLog.txt.2018-08-09 x

TodayLog.txt.2018-08-10 x

TodayLog.txt.2018-07-29





我只需要用'x'表示的文件。我该怎么办呢？



我尝试过：

In the directory i have the following files :

TodayLog.txt x
TodayLog.txt.2018-08-08 x
TodayLog.txt.2018-08-09 x
TodayLog.txt.2018-08-10 x
TodayLog.txt.2018-07-29


I need only files indicated with an 'x'. How can i do that pleasE?

What I have tried:

var file = Directory.GetFiles("//path to directory").Where(s => s.Equals("TodayLog.txt") || s.Contains(".txt.2018 - " + DateTime.Now.ToString("MM") + "-"));

我试过这个方法，但它没有返回任何东西，我需要返回一个字符串[]。 />


有人可以帮帮我吗？

I tried this method but it is not returning anything and i need the return as a string[].

Someone can help me please?

推荐答案

写一个处理路径的方法：

Write a method to process the path:

private bool IsThisMonth(DateTime now, string path)
    {
    DateTime dt;
    if (!DateTime.TryParseExact(Path.GetExtension(path),
                                ".yyyy-MM-dd",
                                CultureInfo.InvariantCulture,
                                DateTimeStyles.None,
                                out dt))
        {
        return false;
        }
    return dt.Year == now.Year && dt.Month == now.Month;
    }

然后它是微不足道的：

Then it's trivial:

DateTime now = DateTime.Now;
string[] thisMonth = inputFilePaths.Where(f => IsThisMonth(now, f)).ToArray();

这篇关于如何使用directory.getfiles获取多个文件名。的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！