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