Adding a Line to the Middle of a File with .NET

Question

Hello I am working on something, and I need to be able to be able to add text into a .txt file. Although I have this completed I have a small problem. I need to write the st

Answer 1

This is the best method to insert a text in middle of the textfile.

 string[] full_file = File.ReadAllLines("test.txt");
 List l = new List();
 l.AddRange(full_file);
 l.Insert(20, "Inserted String"); 
 File.WriteAllLines("test.txt", l.ToArray());