如何读取和写入在C＃中的文件 [英] How to both read and write a file in C#

问题描述

我要同时读取和写入文件。这是行不通的。

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");
}

我怎样才能既读取和写入文件在C＃？

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

推荐答案

您需要一个单一的数据流，打开阅读和写作。

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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