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String.LastIndexOfAny Method

Reports the index position of the last occurrence in this instance of one or more characters specified in a Unicode array.

Overload List

Reports the index position of the last occurrence in this instance of one or more characters specified in a Unicode array.

Supported by the .NET Compact Framework.

[Visual Basic] Overloads Public Function LastIndexOfAny(Char()) As Integer
[C#] public int LastIndexOfAny(char[]);
[C++] public: int LastIndexOfAny(__wchar_t __gc[]);
[JScript] public function LastIndexOfAny(Char[]) : int;

Reports the 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.

Supported by the .NET Compact Framework.

[Visual Basic] Overloads Public Function LastIndexOfAny(Char(), Integer) As Integer
[C#] public int LastIndexOfAny(char[], int);
[C++] public: int LastIndexOfAny(__wchar_t __gc[], int);
[JScript] public function LastIndexOfAny(Char[], int) : int;

Reports the 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 examines a specified number of character positions.

Supported by the .NET Compact Framework.

[Visual Basic] Overloads Public Function LastIndexOfAny(Char(), Integer, Integer) As Integer
[C#] public int LastIndexOfAny(char[], int, int);
[C++] public: int LastIndexOfAny(__wchar_t __gc[], int, int);
[JScript] public function LastIndexOfAny(Char[], int, int) : int;

Example

[Visual Basic, C#, C++] Note   This example shows how to use one of the overloaded versions of LastIndexOfAny. For other examples that might be available, see the individual overload topics.
[Visual Basic] 
' Sample for String.LastIndexOfAny(Char[], Int32, Int32)
Imports System
 _

Class Sample
   
   Public Shared Sub Main()
      
      Dim br1 As String = "0----+----1----+----2----+----3----+----4----+----5----+----6----+-"
      Dim br2 As String = "0123456789012345678901234567890123456789012345678901234567890123456"
      Dim str As String = "Now is the time for all good men to come to the aid of their party."
      Dim start As Integer
      Dim at As Integer
      Dim count As Integer
      Dim target As String = "aid"
      Dim anyOf As Char() = target.ToCharArray()
      
      start =(str.Length - 1) * 2 / 3
      count =(str.Length - 1) / 3
      Console.WriteLine("The last 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.LastIndexOfAny(anyOf, start, count)
      If at > - 1 Then
         Console.Write(at)
      Else
         Console.Write("(not found)")
      End If
      Console.Write("{0}{0}{0}", Environment.NewLine)
   End Sub 'Main
End Class 'Sample
'
'This example produces the following results:
'The last character occurrence from position 44 for 22 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
'

[C#] 
// Sample for String.LastIndexOfAny(Char[], Int32, Int32)
using System;

class Sample {
    public static void 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";
    char[] anyOf = target.ToCharArray();

    start = ((str.Length-1)*2)/3;
    count = (str.Length-1)/3;
    Console.WriteLine("The last 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.LastIndexOfAny(anyOf, start, count);
    if (at > -1) 
        Console.Write(at);
    else
        Console.Write("(not found)");
    Console.Write("{0}{0}{0}", Environment.NewLine);
    }
}
/*
This example produces the following results:
The last character occurrence from position 44 for 22 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
*/

[C++] 
// Sample for String::LastIndexOfAny(Char[], Int32, Int32)
#using <mscorlib.dll>

using namespace System;

int main()
{
    String* br1 = S"0----+----1----+----2----+----3----+----4----+----5----+----6----+-";
    String* br2 = S"0123456789012345678901234567890123456789012345678901234567890123456";
    String* str = S"Now is the time for all good men to come to the aid of their party.";
    int start;
    int at;
    int count;
    String* target = S"aid";
    Char anyOf[] = target->ToCharArray();

    start = ((str->Length-1)*2)/3;
    count = (str->Length-1)/3;
    Console::WriteLine(S"The last character occurrence from position {0} for {1} characters.", __box(start), __box(count));
    Console::WriteLine(S"{1}{0}{2}{0}{3}{0}", Environment::NewLine, br1, br2, str);
    Console::Write(S"A character in '{0}' occurs at position: ", target);

    at = str->LastIndexOfAny(anyOf, start, count);
    if (at > -1) 
        Console::Write(__box(at));
    else
        Console::Write(S"(not found)");
    Console::Write(S"{0}{0}{0}", Environment::NewLine);
}
/*
This example produces the following results:
The last character occurrence from position 44 for 22 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
*/

[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button Language Filter in the upper-left corner of the page.

See Also

String Class | String Members | System Namespace

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