在C＃中读取txt文件时，如何在文件目录中上一层？

Question

I have a txt file located in the application folder, in visual studio i just write "File.read("doc.txt")", however i would like to place the txt file outside of the applications folder

eg right now its located in c:\\Desktop\\Folder\\application\\doc.txt and i want to place the doc.txt inside c:\\desktop\\folder and read it from there without specifying the exact path of the txt file as folder might be moved to another drive eg inside D drive D:\\desktop\\folder

if the user moves the folder and my hard code is "file.read("C:\\desktop\\folder\\doc.txt")" its going to throw an error, so how is there anyway to read a file that is one location above the applications main Folder?

Answer 1

File.Read(@"..\doc.txt");

Will achieve this, the reason to add @ at the start is to show that you're writing a string literal which will allow you to use '\\' without needing to escape it. the ".." part is how you tell the document to go into the parent directory.