C#: Prepending to beginning of a file

Question

What is the best way to add text to the beginning of a file using C#?

I couldn't find a straightforward way to do this, but came up with a couple work-arounds.

1. Open up new file, write the text that I wanted to add, append the text from the old file to the end of the new file.

2. Since the text I want to add should be less than 200 characters, I was thinking that I could add white space characters to the beginning of the file, and then overwrite the white space with the text I wanted to add.

Has anyone else come across this problem, and if so, what did you do?

Answer 1

This works for me, but for small files. Probably it's not a very good solution otherwise.

string currentContent = String.Empty;
if (File.Exists(filePath))
{
    currentContent = File.ReadAllText(filePath);
}
File.WriteAllText(filePath, newContent + currentContent );