How to save multiple rows?

Question

C++ / C#

How to save multiple rows?

I use this code, but only one line is saved when a large number of lines are output to the console:
File.WriteAllText("random.txt", passed variables to save );

Answer 1

You need

var lines = new [] {"a", "b", "c"};
File.WriteAllLines("filename.txt", lines);

Answer 2

Make an array from these lines and serialize the array into any file, BinaryFormatter