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NumberSubstitutionMethod Enumeration

Defines an enumerator class that specifies the type of number substitution to perform on numbers in a text run.

Namespace: System.Windows.Media
Assembly: PresentationCore (in presentationcore.dll)
XML Namespace:  http://schemas.microsoft.com/winfx/2006/xaml/presentation

public enum NumberSubstitutionMethod
public enum NumberSubstitutionMethod
public enum NumberSubstitutionMethod
<object property="EnumerationValue" .../>

 Member nameDescription
AsCultureDefault. Specifies that the substitution method should be determined based on the number culture's DigitSubstitution property value. 
ContextIf the number culture is an Arabic or Farsi culture, specifies that the digits depend on the context. Either traditional or Latin digits are used depending on the nearest preceding strong character, or, if there is none, the text direction of the paragraph. 
EuropeanSpecifies that code points 0x30-0x39 are always rendered as European digits, in which case, no number substitution is performed. 
NativeNationalSpecifies that numbers are rendered using the national digits for the number culture, as specified by the culture's NativeDigits property value. 
TraditionalSpecifies that numbers are rendered using the traditional digits for the number culture. For most cultures, this is the same as the DigitShapes.NativeNational enumeration value. However, using NativeNational can result in Latin digits for some Arabic cultures, whereas using Traditional results in Arabic digits for all Arabic cultures. 

Most cultures use the decimal system to represent numbers, but many cultures use different digit shapes from those we are familiar with in the West. The following table shows several numbering systems used by different cultures.

Example of the appearance of digits in different cultures


Table of number substitution glyphs

It is not sufficient to provide alternate Unicode code points for each set of digit shapes, because, unlike letters, digits are used in calculations. Every application, every operating system, and every run-time library contains code dedicated to converting an internal binary format numeric value to a string of characters, and vice versa. These conversion routines are coded to use Unicode digits "0030" through "0039".

The NumberSubstitution class provides functionality that allows different cultures to substitute the appropriate digit shapes at rendering time. This functionality is similar to the one used for providing font substitution and language dependent font rendering.

NoteNote:

Many cultures are discarding their traditional digits shapes and adopting Western digits shapes, therefore the number substitution functionality recognizes the distinction for each culture between traditional digit shapes and national standard digit shapes.

Windows 98, Windows Server 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 Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0

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