How to output data from a file to a dictionary on button click?

Question

C++ / C#

There is a file results.txt in which the first place is the name of the player, and the second is his result. How to output data from a file to a dictionary on button click?
but since then you will need to look at the result of the character, it is better to keep the data in through this, it is desirable to do so!
Dictionary<string, int>(nick => scrore)