Char.IsWhiteSpace Method (String, Int32)


Indicates whether the character at the specified position in a specified string is categorized as white space.

Namespace:   System
Assembly:  mscorlib (in mscorlib.dll)

public static bool IsWhiteSpace(
	string s,
	int index


Type: System.String

A string.

Type: System.Int32

The position of the character to evaluate in s.

Return Value

Type: System.Boolean

true if the character at position index in s is white space; otherwise, false.

Exception Condition

s is null.


index is less than zero or greater than the last position in s.

Character positions in a string are indexed starting from zero.

White space characters are the following Unicode characters:

  • Members of the SpaceSeparator category, which includes the characters SPACE (U+0020), NO-BREAK SPACE (U+00A0), OGHAM SPACE MARK (U+1680), EN QUAD (U+2000), EM QUAD (U+2001), EN SPACE (U+2002), EM SPACE (U+2003), THREE-PER-EM SPACE (U+2004), FOUR-PER-EM SPACE (U+2005), SIX-PER-EM SPACE (U+2006), FIGURE SPACE (U+2007), PUNCTUATION SPACE (U+2008), THIN SPACE (U+2009), HAIR SPACE (U+200A), NARROW NO-BREAK SPACE (U+202F), MEDIUM MATHEMATICAL SPACE (U+205F), and IDEOGRAPHIC SPACE (U+3000).

  • Members of the LineSeparator category, which consists solely of the LINE SEPARATOR character (U+2028).

  • Members of the ParagraphSeparator category, which consists solely of the PARAGRAPH SEPARATOR character (U+2029).

  • The characters CHARACTER TABULATION (U+0009), LINE FEED (U+000A), LINE TABULATION (U+000B), FORM FEED (U+000C), CARRIAGE RETURN (U+000D), and NEXT LINE (U+0085).

The following code example demonstrates IsWhiteSpace.

using System;

public class IsWhiteSpaceSample {
	public static void Main() {
		string str = "black matter"; 

		Console.WriteLine(Char.IsWhiteSpace('A'));		// Output: "False"
		Console.WriteLine(Char.IsWhiteSpace(str, 5));	// Output: "True"

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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