Most of the examples shows how to read text file from exact location (f.e. \"C:\\Users\\Owner\\Documents\\test1.txt\"). But, how to read text files without writing full path
There are many ways to get a path. See CurrentDirrectory mentioned. Also, you can get the full file name of your application by using
Assembly.GetExecutingAssembly().Location
and then use Path class to get a directory name.