TextElementEnumerator.ElementIndex Property
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Gets the index of the text element that the enumerator is currently positioned over.
Assembly: mscorlib (in mscorlib.dll)
Property Value
Type: System.Int32The index of the text element that the enumerator is currently positioned over.
| Exception | Condition |
|---|---|
| InvalidOperationException | The enumerator is positioned before the first text element of the string or after the last text element. |
The .NET Framework defines a text element as a unit of text that is displayed as a single character, that is, a grapheme. A text element can be a base character, a surrogate pair, or a combining character sequence. The Unicode Standard defines a surrogate pair as a coded character representation for a single abstract character that consists of a sequence of two code units, where the first unit of the pair is a high surrogate and the second is a low surrogate. The Unicode Standard defines a combining character sequence as a combination of a base character and one or more combining characters. A surrogate pair can represent a base character or a combining character. For more information on surrogate pairs and combining character sequences, see The Unicode Standard at http://www.unicode.org.