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Char.IsSurrogate Method (Char)

April 12, 2014

Indicates whether the specified character has a surrogate code unit.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)
public static bool IsSurrogate(
	char c
)

Parameters

c
Type: System.Char
A Unicode character.

Return Value

Type: System.Boolean
true if c is either a high surrogate or a low surrogate; otherwise, false.

A surrogate is a Char object with a Unicode code unit in the range from U+D800 to U+DFFF. Each character with a code unit in this range belongs to the UnicodeCategory.Surrogate category. The individual surrogate code unit has no interpretation of its own, but has meaning only when used as part of a surrogate pair. For more information about surrogate pairs, see the Unicode Standard at the Unicode home page.

The following example demonstrates IsSurrogate.


using System;

public class Example
{
   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
   {
      string str = "\U00010F00"; // Unicode values between 0x10000 and 0x10FFF are represented by two 16-bit "surrogate" characters

      outputBlock.Text += Char.IsSurrogate('a') + "\n";		// Output: "False"
      outputBlock.Text += Char.IsSurrogate(str, 0) + "\n";	// Output: "True"
   }
}


Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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