TextSource.GetPrecedingText(Int32) Method
Definition
Important
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Retrieves the text span immediately before the specified TextSource position.
public:
abstract System::Windows::Media::TextFormatting::TextSpan<System::Windows::Media::TextFormatting::CultureSpecificCharacterBufferRange ^> ^ GetPrecedingText(int textSourceCharacterIndexLimit);public abstract System.Windows.Media.TextFormatting.TextSpan<System.Windows.Media.TextFormatting.CultureSpecificCharacterBufferRange> GetPrecedingText (int textSourceCharacterIndexLimit);abstract member GetPrecedingText : int -> System.Windows.Media.TextFormatting.TextSpan<System.Windows.Media.TextFormatting.CultureSpecificCharacterBufferRange>Public MustOverride Function GetPrecedingText (textSourceCharacterIndexLimit As Integer) As TextSpan(Of CultureSpecificCharacterBufferRange)Parameters
- textSourceCharacterIndexLimit
- Int32
The character index position where text retrieval stops.
Returns
A CultureSpecificCharacterBufferRange value that represents the text span immediately before textSourceCharacterIndexLimit.
Remarks
The GetPrecedingText method returns an empty CultureSpecificCharacterBufferRange if the text span immediately before textSourceCharacterIndexLimit does not contain any text, such as inline object or a hidden run.
This method returns a zero-length text span if there are no values preceding textSourceCharacterIndexLimit.
