Char::IsLetterOrDigit Method (Char)

 
System_CAPS_noteNote

The .NET API Reference documentation has a new home. Visit the .NET API Browser on docs.microsoft.com to see the new experience.

Indicates whether the specified Unicode character is categorized as a letter or a decimal digit.

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

public:
static bool IsLetterOrDigit(
	wchar_t c
)

Parameters

c
Type: System::Char

The Unicode character to evaluate.

Return Value

Type: System::Boolean

true if c is a letter or a decimal digit; otherwise, false.

Valid letters and decimal digits are members of the following categories in UnicodeCategory: UppercaseLetter, LowercaseLetter, TitlecaseLetter, ModifierLetter, OtherLetter, or DecimalDigitNumber.

The following code example demonstrates IsLetterOrDigit.

using namespace System;
int main()
{
   String^ str =  "newline:\n";
   Console::WriteLine( Char::IsLetterOrDigit( '8' ) ); // Output: "True"
   Console::WriteLine( Char::IsLetterOrDigit( str, 8 ) ); // Output: "False", because it's a newline
}

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
Return to top
Show: