如何在 C# 中读取和写入文件 [英] How to both read and write a file in C#

问题描述

我想读取和写入文件.这不起作用.

I want to both read from and write to a file. This doesn't work.

static void Main(string[] args)
{
    StreamReader sr = new StreamReader(@"C:words.txt");
    StreamWriter sw = new StreamWriter(@"C:words.txt");
}

如何在 C# 中读取和写入文件?

How can I both read from and write to a file in C#?

推荐答案

您需要一个流，同时打开以供读取和写入.

You need a single stream, opened for both reading and writing.

FileStream fileStream = new FileStream(
      @"c:words.txt", FileMode.OpenOrCreate, 
      FileAccess.ReadWrite, FileShare.None);

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