I have searched for a way before what the most effective way and in this case important the fastest way is to seek backwards in a file to read the very last line in a file.
Like in this case I want to search from the end and backwards to get the whole line in a TextFile.
Important to know is that this file also only can consist of one line.
I am familiar to read a file with StreamReader and the lines can have different lengths.
3 lines in a file: