C#字符串替换实际上并不替换字符串中的值

C# string replace does not actually replace the value in the string(C#字符串替换实际上并不替换字符串中的值)

问题描述

我正在尝试用另一个字符串替换字符串的一部分.更准确地说我有 C:UsersDesktopProjectinDebug

I am trying to replace a part of string with another another string. To be more precise I have C:UsersDesktopProjectinDebug

我正在尝试用 ResourcesPeople

我尝试了以下方法:

1. path.Replace(@"inDebug", @"ResourcePeopleVisitingFaculty.txt");

path.Replace("\bin\Debug", "\Resource\People\VisitingFaculty.txt");

上述两个似乎都不起作用，因为字符串保持不变并且没有任何内容被替换.难道我做错了什么?

None of the above two seems to work, as the string remains the same and nothing is replaced. Am I doing something wrong?

推荐答案

问题是字符串是不可变的.replace、substring 等方法不会更改字符串本身.他们创建一个新字符串并替换它.所以上面的代码是正确的，应该是

The problem is that strings are immutable. The methods replace, substring, etc. do not change the string itself. They create a new string and replace it. So for the above code to be correct, it should be

path1 = path.Replace("\bin\Debug", "\Resource\People\VisitingFaculty.txt");

或者只是

path = path.Replace("\bin\Debug", "\Resource\People\VisitingFaculty.txt");

如果不需要另一个变量.

if another variable is not needed.

这个答案也提醒我们字符串是不可变的.您对它们所做的任何更改实际上都会创建一个新字符串.因此，请记住所有涉及字符串的内容，包括内存管理.如文档此处所述.

This answer is also a reminder that strings are immutable. Any change you make to them will in fact create a new string. So keep that in mind with everything that involves strings, including memory management. As stated in the documentation here.

String 对象是不可变的:它们一旦拥有就无法更改被创建.出现的所有 String 方法和 C# 运算符修改一个字符串实际上是在一个新的字符串对象中返回结果

String objects are immutable: they cannot be changed after they have been created. All of the String methods and C# operators that appear to modify a string actually return the results in a new string object

这篇关于C#字符串替换实际上并不替换字符串中的值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！