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Answer 1

+1 A:

The most obvious troubleshooting step would be to check what the value of str actually is. Just view it in the debugger or print it out.

Evgeny 2010-04-30 07:59:05

Answer 2

+1 A:

Newline is "\r\n", not "/r/n". Maybe there's more than just the newline.... what is the string value in Debug Mode?

You could use the new .NET 4.0 Method: String.IsNullOrWhiteSpace

Steav 2010-04-30 07:59:17

Answer 3

+5 A:

How are the lines read? If you're using StreamReader.ReadLine (or something similar), the new line character will not appear in the resulting string - it will be String.Empty or (i.e. "").

Daniel Renshaw 2010-04-30 08:00:08

I'm using File.ReadAllLines to read them into a string array

paradox 2010-04-30 08:05:30

Daniel got the correct answer. File.ReadAllLine won't include the newline into the string. So you should actually check for String.Empty.

Amry 2010-04-30 08:09:07

when you use File.ReadAllLines, why do you care about '\n'. You will not get that. Instead you'll get all the lines in a string array split by '\n'. check if File.ReadAllText serves your purpose.

Veer 2010-04-30 08:09:23

Answer 4

A:

Are you sure that the whole string only contains a NewLine and nothing more or less? Have you already tried str.Contains(Environment.NewLine)?

Oliver 2010-04-30 08:21:31

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Determine if string is newline in C#

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