创建一个新的.txt文件，日期在前面，C＃ [英] Creating a new .txt file with date in front, C#

问题描述

我试图得到以下内容：[今天的日期] ___ [textfilename] .txt从以下代码：

I am trying to get the following: [today's date]___[textfilename].txt from the following code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;

namespace ConsoleApplication29
{
    class Program
    {
        static void Main(string[] args)
        {
            WriteToFile();

        }

        static void WriteToFile()
        {

            StreamWriter sw;
            sw = File.CreateText("c:\\testtext.txt");
            sw.WriteLine("this is just a test");
            sw.Close();
            Console.WriteLine("File created successfully");



        }
    }
}

我尝试放入 DateTime.Now.ToString（），但我不能组合字符串。任何人都可以帮助我吗？

I tried putting in DateTime.Now.ToString() but i cannot combine the strings.

我想要在FRONT创建新文本文件标题的日期。

Can anybody help me? I want the date in FRONT of the title of the new text file I am creating.

推荐答案

static void WriteToFile(string directory, string name)
{
    string filename = String.Format("{0:yyyy-MM-dd}__{1}", DateTime.Now, name);
    string path = Path.Combine(directory, filename);
    using (StreamWriter sw = File.CreateText(path))
    {
        sw.WriteLine("This is just a test");
    }
}

致电：

WriteToFile(@"C:\mydirectory", "myfilename");

请注意以下几点：

• 使用自定义格式字符串指定日期，并避免在NTFS中使用字符非法。


• 前缀包含带有@字符串文字标记的路径的字符串，因此您可以


• 将路径部分与Path.Combine（）相结合，避免使用路径分隔符。


• 在创建StreamWriter时使用使用块;退出该块将处理
  StreamWriter，并自动关闭该文件。

• Specify the date with a custom format string, and avoid using characters illegal in NTFS.
• Prefix strings containing paths with the '@' string literal marker, so you don''t have to escape the backslashes in the path.
• Combine path parts with Path.Combine(), and avoid mucking around with path separators.
• Use a using block when creating the StreamWriter; exiting the block will dispose the StreamWriter, and close the file for you automatically.

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