String::IndexOfAny Method (array<Char>, Int32, Int32)
Reports the zero-based index of the first occurrence in this instance of any character in a specified array of Unicode characters. The search starts at a specified character position and examines a specified number of character positions.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- anyOf
- Type: array<System::Char>
A Unicode character array containing one or more characters to seek.
- startIndex
- Type: System::Int32
The search starting position.
- count
- Type: System::Int32
The number of character positions to examine.
Return Value
Type: System::Int32The zero-based index position of the first occurrence in this instance where any character in anyOf was found; -1 if no character in anyOf was found.
| Exception | Condition |
|---|---|
| ArgumentNullException | anyOf is nullptr. |
| ArgumentOutOfRangeException | count or startIndex is negative. -or- count + startIndex is greater than the number of characters in this instance. |
The search begins at startIndex and continues to startIndex + count -1. The character at startIndex + count is not included in the search.
Index numbering starts from zero. The startIndex parameter can range from 0 to one less than the length of the string instance.
The search for anyOf 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 value are the same. To perform a culture-sensitive search, use the CompareInfo::IndexOf 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.
The following example finds the index of the occurrence of any character of the string "aid" within a substring of another string.
// Sample for String::IndexOfAny(Char[], Int32, Int32) using namespace System; int main() { String^ br1 = "0----+----1----+----2----+----3----+----4----+----5----+----6----+-"; String^ br2 = "0123456789012345678901234567890123456789012345678901234567890123456"; String^ str = "Now is the time for all good men to come to the aid of their party."; int start; int at; int count; String^ target = "aid"; array<Char>^anyOf = target->ToCharArray(); start = (str->Length - 1) / 3; count = (str->Length - 1) / 4; Console::WriteLine(); Console::WriteLine( "The first character occurrence from position {0} for {1} characters.", start, count ); Console::WriteLine( "{1}{0}{2}{0}{3}{0}", Environment::NewLine, br1, br2, str ); Console::Write( "A character in '{0}' occurs at position: ", target ); at = str->IndexOfAny( anyOf, start, count ); if ( at > -1 ) Console::Write( at ); else Console::Write( "(not found)" ); Console::WriteLine(); } /* The first character occurrence from position 22 for 16 characters. 0----+----1----+----2----+----3----+----4----+----5----+----6----+- 0123456789012345678901234567890123456789012345678901234567890123456 Now is the time for all good men to come to the aid of their party. A character in 'aid' occurs at position: 27 */
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.