字符串（路径）中没有文件的文件名存在

Question

I am trying to get a file name out of a string, but it is possible the file does not exist (yet) when trying to get the file name. So as far as i know, i can not use the Path.GetFileName Method, or can i somehow still use this method without the file actually existing?

Example of the string: C:\\cSharp\\test\\001.txt

The length of the file name can variate. What would be the best approach to try to get the file name? through regular expressions? maybe some other way?

Answer 1

You can use the Path methods even if the file doesn't exist. Actually those Path methods are just string methods. So this works:

string fileName = System.IO.Path.GetFileName(@"C:\cSharp\test\001.txt"); //001.txt