Assembly: Azuki (in Azuki.dll) Version: 1.7.13.40248
Syntax
C# |
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public SearchResult FindPrev( Regex regex, int startIndex ) |
Visual Basic |
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Public Function FindPrev ( regex As Regex, startIndex As Integer ) As SearchResult |
Parameters
- regex
- Type: System.Text.RegularExpressions..::..Regex
A Regex object expressing the text pattern.
- startIndex
- Type: System..::..Int32
The search starting position.
Return Value
Type: SearchResultSearch result object if found, otherwise null if not found.
Remarks
This method finds the last occurrence of a pattern expressed by a regular expression in the range of [0, startIndex). The text matching process continues for the document head and does not stop at line ends nor null-characters. If the search range should end before EOD, use other overload method.
RegexOptions.RightToLeft option MUST be set to the Regex object given as parameter regex otherwise an ArgumentException will be thrown.
If an empty string was used for a regular expression pattern, search result will be a range of [end, end).
Exceptions
Exception | Condition |
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System..::..ArgumentException | Parameter regex is a Regex object without RegexOptions.RightToLeft option. |
System..::..ArgumentNullException | Parameter regex is null. |
System..::..ArgumentOutOfRangeException | Parameter startIndex is out of valid range. |