C#

.NET

C#4.0

string

.NET4

.NET 4: string.IsNullOrWhitespace()

jfriedman

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12 Aug 2010CPOL 15.6K   1   3

public static class StringExtensions { public static bool IsNullOrWhitespace(this string s) { if (null == s) return true; return string.IsNullOrEmpty(s.Trim()); } }

C#

public static class StringExtensions
    {
        public static bool IsNullOrWhitespace(this string s)
        {
            if (null == s) return true;
            return string.IsNullOrEmpty(s.Trim());
        }
    }

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Written By

jfriedman

Software Developer (Senior)

 United States

Livin in a lonely world, caught the midnight train going anywhere... Only thing is it was a runaway train... and it ain't ever goin back...
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Comments and Discussions

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Thank you for clarifying however... Whitespace variants can... jfriedman13-Aug-10 10:30 jfriedman 13-Aug-10 10:30  Thank you for clarifying however... Whitespace variants can be matched with a RegEx and are outside the scope of the name of the functions which implies Whitespace not WhiteSpace Variants... http://www.csharp411.com/remove-whitespace-from-c-strings/ The name of the function is not IsNullOrWhitespaceOrNewLineorTabOrSomeOtherCharacterWhichTakes0Space() Re: I assist carrol_jhara in the broader definition of <B>White<... Andreas Gieriet26-Feb-12 10:48 Andreas Gieriet 26-Feb-12 10:48  I assist carrol_jhara in the broader definition of Whitespace. See also Wikipedia. Since C# strings are unicode, one can assume that anything manipulating Whitespaces respects the unicode definition of whitespace (26 different characters in total!). Even Trim respects this, e.g: <br /> <br /> string s = "\n\f\r\t a b c \u202F ";<br /> <br /> Console.WriteLine("'{0}' <-- '{1}'", s.Trim(), s);<br /> results in:'a b c' <-- ' a b c ? ' And since Trim respects it, your example code is fine off! Reason for my vote of 2 will fail on whitespaces variants carrol_jhara12-Aug-10 18:46 carrol_jhara 12-Aug-10 18:46  Reason for my vote of 2 will fail on whitespaces variants

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