String.LastIndexOfAny Method (Char, Int32, Int32)
Reports the zero-based index position of the last occurrence in this instance of one or more characters specified in a Unicode array. The search starts at a specified character position and proceeds backward toward the beginning of the string for a specified number of character positions.
Assembly: mscorlib (in mscorlib.dll)
- Type: System.Char
A Unicode character array containing one or more characters to seek.
- Type: System.Int32
The search starting position. The search proceeds from startIndex toward the beginning of this instance.
- Type: System.Int32
The number of character positions to examine.
anyOf is a null reference (Nothing in Visual Basic).
The current instance does not equal String.Empty, and count or startIndex is negative.
The current instance does not equal String.Empty, and startIndex minus count + 1 is less than zero.
Index numbering starts from zero.
This method begins searching at the startIndex character position of this instance and proceeds backward toward the beginning until either a character in anyOf is found or count character positions have been examined. The search is case-sensitive.
This method performs an ordinal (culture-insensitive) search, where a character is considered equivalent to another character only if their Unicode scalar values are the same. To perform a culture-sensitive search, use the CompareInfo.LastIndexOf method, where a Unicode scalar value representing a precomposed character, such as the ligature "Æ" (U+00C6), might be considered equivalent to any occurrence of the character's components in the correct sequence, such as "AE" (U+0041, U+0045), depending on the culture.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.