Remove empty line from string

Questions & Answers
1

How can I remove empty line from a string for example:

Turn this:
73821-untitled.jpg

To This:
73822-untitled2.jpg

I used this code text.Replace(" ",""); but it turns it to:

testtesttes

2

Ahhh, you almost had it!

text.Replace("

", "
");
Is what you are looking for.

That said, that only replaces a single line. If you had two empty lines in a row, the above code will clear the first one but leave the second one empty. So to run a more generic replacement, you need to use regular expressions. This would work in every situation

using System.Text.RegularExpressions;
string result = Regex.Replace(sourceString, @"^\s*$[

]*", string.Empty, RegexOptions.Multiline);

3

You’re replacing all new lines to nothing so of course all the text are shoved together.

You want to replace all multiple new lines with only a single new line.

Check out this similar question: c# - How can I replace multiple line breaks with a single <BR>? - Stack Overflow

This Regex will work for your purpose as it will replace multiple occurrence of
with a single
.

string formatted = Regex.Replace(original, @"[

]{2,}", "
");
Or without Regex:

int oldLength;
do {
    oldLength = str.Length;
    str = str.Replace("

", "
");
} while(str.Length != oldLength);