Skip to main content This browser is no longer supported. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Char.IsSymbol MethodDefinitionIndicates whether a Unicode character is categorized as a symbol character. In this articleOverloads
IsSymbol(Char)
| Indicates whether the specified Unicode character is categorized as a symbol character.
| IsSymbol(String, Int32)
| Indicates whether the character at the specified position in a specified string is categorized as a symbol character.
|
ExamplesThe following code example demonstrates IsSymbol. using namespace System;
int main()
{
String^ str = "non-symbolic characters";
Console::WriteLine( Char::IsSymbol( '+' ) ); // Output: "True"
Console::WriteLine( Char::IsSymbol( str, 8 ) ); // Output: "False"
}
using System;
public class IsSymbolSample {
public static void Main() {
string str = "non-symbolic characters";
Console.WriteLine(Char.IsSymbol('+')); // Output: "True"
Console.WriteLine(Char.IsSymbol(str, 8)); // Output: "False"
}
}
open System
let str = "non-symbolic characters"
printfn $"{Char.IsSymbol '+'}" // Output: "True"
printfn $"{Char.IsSymbol(str, 8)}" // Output: "False"
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
RemarksValid 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.
IsSymbol(Char) Indicates whether the specified Unicode character is categorized as a symbol character. public:
static bool IsSymbol(char c);
public static bool IsSymbol (char c);
static member IsSymbol : char -> bool
Public Shared Function IsSymbol (c As Char) As Boolean
Parameters c Char The
Unicode character to evaluate. Returns Booleantrue if c is a symbol character; otherwise, false .
RemarksValid 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.
See alsoApplies to IsSymbol(String, Int32) Indicates whether the character at the specified position in
a specified string is categorized as a symbol character. public:
static bool IsSymbol(System::String ^ s, int index);
public static bool IsSymbol (string s, int index);
static member IsSymbol : string * int -> bool
Public Shared Function IsSymbol (s As String, index As Integer) As Boolean
Parameters index Int32 The position of the character to evaluate in s . Returns Boolean true if the character at position index in s is a symbol character; otherwise, false .
Exceptionsindex is less than zero or greater than the last position in s .
RemarksCharacter positions in a string are indexed
starting from zero. Valid symbols are members of the following categories in System.Globalization.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.
See alsoApplies to
|