替换文件中的文本 [英] Replacing text in a file

问题描述

我有一个文件，必须替换文件中的某些文本.我使用下面的代码来更改文本.

Hi,

I have a file where i have to replace a certain text inside a file. I used below code to change th text.

string path = "C:\\Documents and Settings\\Desktop\\sample.txt";
StreamReader reader = new StreamReader(path);
string text = reader.ReadToEnd();
text = text.Replace("9C39C270-C77F-11DE-92BB-00188B8DE4BE", "asdfgh");
reader.Close();
File.Delete(path);
StreamWriter stream = new StreamWriter(path);
stream.Write(text);
stream.Close();

一切正常.但是我感觉到，它会影响性能，因为它使用了许多操作，例如
以读取模式打开文件，复制文本，关闭文件，删除文件，创建新文件并写入文件.

还有其他选择，这样我可以一次完成所有操作吗?

---

Sab

This is working fine. But what I feel is, it affects the performance because it uses lot of operations like
opening the file in read mode, copying the text, Closing the file,  deleting the file, Create a new file and writing into the file.

Is there any other alternative for this so that I can do all the operations in a single shot?

---

Sab

推荐答案

据我所知，您不需要删除文件，只需使用StreamWriter打开它，它将覆盖文件正文.
这是简单的改进.也许还有其他选择.

As I know you don't need to delete file, just open it with StreamWriter and it will override file body.
This is simple improving. Maybe exists some other alternative.

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