Char.IsSymbol Method (Char)

 
System_CAPS_noteNote

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Indicates whether the specified Unicode character is categorized as a symbol character.

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

Public Shared Function IsSymbol (
	c As Char
) As Boolean

Parameters

c
Type: System.Char

The Unicode character to evaluate.

Return Value

Type: System.Boolean

true if c is a symbol character; otherwise, false.

Valid symbols are members of the following categories in UnicodeCategory: MathSymbol, CurrencySymbol, ModifierSymbol, and OtherSymbol.

Symbols in the Unicode standard are a loosely defined set of characters that include the following:

  • Currency symbols.

  • Letterlike symbols, which include a set of mathematical alphanumeric symbols as well as symbols such as ℅, №, and ™.

  • Number forms, such as subscripts and superscripts.

  • Mathematical operators and arrows.

  • Geometric symbols.

  • Technical symbols.

  • Braille patterns.

  • Dingbats.

The following code example demonstrates IsSymbol.

Imports System

Module IsSymbolSample

    Sub Main()

        Dim str As String
        str = "non-symbolic characters"

        Console.WriteLine(Char.IsSymbol("+"c))      ' Output: "True"
        Console.WriteLine(Char.IsSymbol(str, 8))    ' Output: "False"

    End Sub

End Module

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