Question

Given the c# code:

string foo = @"
           abcde
           fghijk";

I am trying to remove all formatting, including whitespaces between the lines.

So far the code

foo = foo.Replace("\n","").Replace("\r", "");

works but the whitespace between lines 2 and 3 and still kept.

I assume a regular expression is the only solution?

Thanks.

Answer 1

I’m assuming you want to keep multiple lines, if not, i’d choose CAbbott‘s answer.

var fooNoWhiteSpace = string.Join(
    Environment.NewLine,
    foo.Split(new string[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries)
       .Select(fooline => fooline.Trim())
);

1. What this does it split the string into lines (foo.Split),
2. trim whitespace from the start and end of each line (.Select(fooline => fooline.Trim())),
3. then combine them back together with a new line inbetween (string.Join).