Windows apps
Collapse the table of content
Expand the table of content
Information
The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

Char.IsSurrogate Method (String, Int32)

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

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

public static bool IsSurrogate (
	string s,
	int index
)
public static boolean IsSurrogate (
	String s, 
	int index
)
public static function IsSurrogate (
	s : String, 
	index : int
) : boolean

Parameters

s

A string.

index

The character position in s.

Return Value

true if the character at position index in s is a surrogate character; otherwise, false.

Exception typeCondition

ArgumentNullException

s is a null reference (Nothing in Visual Basic).

ArgumentOutOfRangeException

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

Character positions in a string are indexed starting from zero.

Valid surrogate characters are members of the following category in UnicodeCategory: Surrogate.

For more information about surrogate pairs, see the Unicode Standard at the Unicode .

The following code example demonstrates IsSurrogate.

using System;

public class IsSurrogateSample {
	public static void Main() {
		string str = "\U00010F00"; // Unicode values between 0x10000 and 0x10FFF are represented by two 16-bit "surrogate" characters

		Console.WriteLine(Char.IsSurrogate('a'));		// Output: "False"
		Console.WriteLine(Char.IsSurrogate(str, 0));	// Output: "True"
	}
}

import System.*;

public class IsSurrogateSample
{
    public static void main(String[] args)
    {
        String str = "\u00010F00"; // Unicode values between 0x10000 and 
                                   // 0x10FFF are represented by two 16-bit
                                   // "surrogate" characters
        Console.WriteLine(Char.IsSurrogate('a'));       
        Console.WriteLine(Char.IsSurrogate(str, 0));    
    } //main
} //IsSurrogateSample

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0

Community Additions

Show:
© 2017 Microsoft