How to remove empty lines from a formatted string?

Question

How to remove empty lines in a string in C#? I am generating some text files in C# (winforms) and for some reason there are some empty lines. How can I remove them after the

Answer 1

This pattern works perfect to remove empty lines and lines with only spaces and/or tabs.

s = Regex.Replace(s, "^\s*(\r\n|\Z)", "", RegexOptions.Multiline)