文件处理，替换文本文件中的特定行 [英] File Handling, replacing a certain line in a text file

问题描述

使用循环搜索文件直到到达特定行，如何用我定义的我自己的行替换(删除并写入)文件中的该特定行?

在我的示例中，我知道需要覆盖的特定行始终是第一行.我该怎么做?

Using a loop to search through a file until a certain line is reached, how do I replace (remove and then write) that specific line in the file with my own line that I define?

In my example I know that the specific line that needs to be overwritten is always the first. How do I do this?

推荐答案

使用此代码，这可能对您有帮助

use this code , this may helps you

//Read all lines from the file
string[] data=File.ReadAllLines("myfile.txt");
//replace the first line with your data.
 data[0] = "my own text";
//write all data again into the file.
 File.WriteAllLines("myfileout.txt", data);

谢谢
--RA

Thanks
--RA

string[] lines = File.ReadAllLines("file.txt");

lines[0]="New Line to overwrite";

File.WriteAllLines("file.txt", lines );

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