String.IndexOfAny String.IndexOfAny String.IndexOfAny String.IndexOfAny Method

定義

報告指定 Unicode 字元陣列中的任何字元於這個執行個體中第一個符合項目的索引。Reports the index of the first occurrence in this instance of any character in a specified array of Unicode characters. 如果在此執行個體中找不到陣列中的字元,此方法會傳回 -1。The method returns -1 if the characters in the array are not found in this instance.

多載

IndexOfAny(Char[]) IndexOfAny(Char[]) IndexOfAny(Char[]) IndexOfAny(Char[])

報告指定的 Unicode 字元陣列中,任何字元在這個執行個體中第一次出現時的所在索引 (以零為起始)。Reports the zero-based index of the first occurrence in this instance of any character in a specified array of Unicode characters.

IndexOfAny(Char[], Int32) IndexOfAny(Char[], Int32) IndexOfAny(Char[], Int32) IndexOfAny(Char[], Int32)

報告指定的 Unicode 字元陣列中,任何字元在這個執行個體中第一次出現時的所在索引 (以零為起始)。Reports the zero-based index of the first occurrence in this instance of any character in a specified array of Unicode characters. 搜尋從指定的字元位置開始。The search starts at a specified character position.

IndexOfAny(Char[], Int32, Int32) IndexOfAny(Char[], Int32, Int32) IndexOfAny(Char[], Int32, Int32) IndexOfAny(Char[], Int32, Int32)

報告指定的 Unicode 字元陣列中,任何字元在這個執行個體中第一次出現時的所在索引 (以零為起始)。Reports the zero-based index of the first occurrence in this instance of any character in a specified array of Unicode characters. 搜尋從指定的字元位置開始,並檢視指定數目的字元位置。The search starts at a specified character position and examines a specified number of character positions.

IndexOfAny(Char[]) IndexOfAny(Char[]) IndexOfAny(Char[]) IndexOfAny(Char[])

報告指定的 Unicode 字元陣列中,任何字元在這個執行個體中第一次出現時的所在索引 (以零為起始)。Reports the zero-based index of the first occurrence in this instance of any character in a specified array of Unicode characters.

public:
 int IndexOfAny(cli::array <char> ^ anyOf);
public int IndexOfAny (char[] anyOf);
member this.IndexOfAny : char[] -> int
Public Function IndexOfAny (anyOf As Char()) As Integer

參數

anyOf
Char[]

Unicode 字元陣列,含有一或多個要搜尋的字元。A Unicode character array containing one or more characters to seek.

傳回

在此執行個體中,anyOf 中的任何字元第一次出現的所在索引位置 (以零為起始),如果找不到 anyOf 中的字元,則為 -1。The 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.

例外狀況

範例

下列範例會尋找字串中的第一個母音。The following example finds the first vowel in a string.

using System;

public class Example
{
   public static void Main()
   {
      char[] chars = { 'a', 'e', 'i', 'o', 'u', 'y', 
                       'A', 'E', 'I', 'O', 'U', 'Y' };
      String s = "The long and winding road...";
      Console.WriteLine("The first vowel in \n   {0}\nis found at position {1}", 
                        s, s.IndexOfAny(chars) + 1);                         
   }
}
// The example displays the following output:
//       The first vowel in
//          The long and winding road...
//       is found at position 3
Module Example
   Public Sub Main()
      Dim chars() As Char = { "a"c, "e"c, "i"c, "o"c, "u"c, "y"c, 
                              "A"c, "E"c, "I"c, "O"c, "U"c, "Y"c }
      Dim s As String = "The long and winding road..."
      Console.WriteLine("The first vowel in {2}   {0}{2}is found at position {1}", 
                        s, s.IndexOfAny(chars) + 1, vbCrLf)                         
   End Sub
End Module
' The example displays the following output:
'       The first vowel in
'          The long and winding road...
'       is found at position 3

備註

索引編號從零開始。Index numbering starts from zero.

搜尋anyOf會區分大小寫。The search for anyOf is case-sensitive. 如果anyOf是空陣列,則方法會在字串的開頭尋找相符項(也就是在索引零處)。If anyOf is an empty array, the method finds a match at the beginning of the string (that is, at index zero).

這個方法會執行序數(不區分文化特性)的搜尋,其中字元只有在 Unicode 純量值相同時,才會被視為與另一個字元相等。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. 若要執行區分文化特性的搜尋,請CompareInfo.IndexOf使用方法,其中代表 precomposed 字元的 Unicode 純量值(例如,連字 "Æ" (U + 00C6))可能會被視為等同于任何出現的字元元件。依文化特性而定的正確順序,例如 "AE" (U + 0041、U + 0045)。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.

另請參閱

IndexOfAny(Char[], Int32) IndexOfAny(Char[], Int32) IndexOfAny(Char[], Int32) IndexOfAny(Char[], Int32)

報告指定的 Unicode 字元陣列中,任何字元在這個執行個體中第一次出現時的所在索引 (以零為起始)。Reports the zero-based index of the first occurrence in this instance of any character in a specified array of Unicode characters. 搜尋從指定的字元位置開始。The search starts at a specified character position.

public:
 int IndexOfAny(cli::array <char> ^ anyOf, int startIndex);
public int IndexOfAny (char[] anyOf, int startIndex);
member this.IndexOfAny : char[] * int -> int
Public Function IndexOfAny (anyOf As Char(), startIndex As Integer) As Integer

參數

anyOf
Char[]

Unicode 字元陣列,含有一或多個要搜尋的字元。A Unicode character array containing one or more characters to seek.

startIndex
Int32 Int32 Int32 Int32

搜尋開始位置。The search starting position.

傳回

在此執行個體中,anyOf 中的任何字元第一次出現的所在索引位置 (以零為起始),如果找不到 anyOf 中的字元,則為 -1。The 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.

例外狀況

startIndex 為負。startIndex is negative.

-或--or- startIndex 大於這個執行個體的字元數。startIndex is greater than the number of characters in this instance.

範例

下列範例會在另一個字串的子字串中,尋找字串 "is" 之任何字元的出現位置索引。The following example finds the index of the occurrence of any character of the string "is" within a substring of another string.

// Sample for String::IndexOfAny(Char[], 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;
   String^ target = "is";
   array<Char>^anyOf = target->ToCharArray();
   start = str->Length / 2;
   Console::WriteLine();
   Console::WriteLine( "The first character occurrence from position {0} to {1}.", start, str->Length - 1 );
   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 );
   if ( at > -1 )
      Console::Write( at );
   else
      Console::Write( "(not found)" );

   Console::WriteLine();
}

/*

The first character occurrence from position 33 to 66.
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 'is' occurs at position: 49

*/
// Sample for String.IndexOfAny(Char[], 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;
    string target = "is";
    char[] anyOf = target.ToCharArray();

    start = str.Length/2;
    Console.WriteLine();
    Console.WriteLine("The first character occurrence from position {0} to {1}.", 
                           start, str.Length-1);
    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);
    if (at > -1) 
        Console.Write(at);
    else
        Console.Write("(not found)");
    Console.WriteLine();
    }
}
/*

The first character occurrence from position 33 to 66.
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 'is' occurs at position: 49

*/
' Sample for String.IndexOfAny(Char[], Int32)
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 target As String = "is"
      Dim anyOf As Char() = target.ToCharArray()
      
      start = str.Length / 2
      Console.WriteLine()
      Console.WriteLine("Search for a character occurrence from position {0} to {1}.", _
                           start, str.Length - 1)
      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)
      If at > - 1 Then
         Console.Write(at)
      Else
         Console.Write("(not found)")
      End If
      Console.WriteLine()
   End Sub
End Class 'Sample
'
'
'Search for a character occurrence from position 33 to 66.
'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 'is' occurs at position: 49
'

備註

索引編號從零開始。Index numbering starts from zero. 參數startIndex的範圍可以從0到一個小於字串實例的長度。The startIndex parameter can range from 0 to one less than the length of the string instance.

搜尋範圍從startIndex到字串的結尾。The search ranges from startIndex to the end of the string.

搜尋anyOf會區分大小寫。The search for anyOf is case-sensitive.

這個方法會執行序數(不區分文化特性)的搜尋,其中字元只有在 Unicode 純量值相同時,才會被視為與另一個字元相等。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. 若要執行區分文化特性的搜尋,請CompareInfo.IndexOf使用方法,其中代表 precomposed 字元的 Unicode 純量值(例如,連字 "Æ" (U + 00C6))可能會被視為等同于任何出現的字元元件。依文化特性而定的正確順序,例如 "AE" (U + 0041、U + 0045)。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.

另請參閱

IndexOfAny(Char[], Int32, Int32) IndexOfAny(Char[], Int32, Int32) IndexOfAny(Char[], Int32, Int32) IndexOfAny(Char[], Int32, Int32)

報告指定的 Unicode 字元陣列中,任何字元在這個執行個體中第一次出現時的所在索引 (以零為起始)。Reports the zero-based index of the first occurrence in this instance of any character in a specified array of Unicode characters. 搜尋從指定的字元位置開始,並檢視指定數目的字元位置。The search starts at a specified character position and examines a specified number of character positions.

public:
 int IndexOfAny(cli::array <char> ^ anyOf, int startIndex, int count);
public int IndexOfAny (char[] anyOf, int startIndex, int count);
member this.IndexOfAny : char[] * int * int -> int
Public Function IndexOfAny (anyOf As Char(), startIndex As Integer, count As Integer) As Integer

參數

anyOf
Char[]

Unicode 字元陣列,含有一或多個要搜尋的字元。A Unicode character array containing one or more characters to seek.

startIndex
Int32 Int32 Int32 Int32

搜尋開始位置。The search starting position.

count
Int32 Int32 Int32 Int32

要檢視的字元位置數目。The number of character positions to examine.

傳回

在此執行個體中,anyOf 中的任何字元第一次出現的所在索引位置 (以零為起始),如果找不到 anyOf 中的字元,則為 -1。The 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.

例外狀況

countstartIndex 為負。count or startIndex is negative.

-或--or- count + startIndex 大於這個執行個體的字元數。count + startIndex is greater than the number of characters in this instance.

範例

下列範例會在另一個字串的子字串中,尋找字串 "輔助" 之任何字元的索引。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

*/
// Sample for String.IndexOfAny(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)/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

*/
' Sample for String.IndexOfAny(Char[], Int32, Int32)
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) / 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 Then
         Console.Write(at)
      Else
         Console.Write("(not found)")
      End If
      Console.WriteLine()
   End Sub
End Class 'Sample
'
'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
'

備註

搜尋會從開始startIndex ,一直到startIndex + count -1。The search begins at startIndex and continues to startIndex + count -1. 中的字元startIndex + 不包含在搜尋中countThe character at startIndex + count is not included in the search.

索引編號從零開始。Index numbering starts from zero. 參數startIndex的範圍可以從0到一個小於字串實例的長度。The startIndex parameter can range from 0 to one less than the length of the string instance.

搜尋anyOf會區分大小寫。The search for anyOf is case-sensitive.

這個方法會執行序數(不區分文化特性)的搜尋,其中字元只有在 Unicode 純量值相同時,才會被視為與另一個字元相等。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. 若要執行區分文化特性的搜尋,請CompareInfo.IndexOf使用方法,其中代表 precomposed 字元的 Unicode 純量值(例如,連字 "Æ" (U + 00C6))可能會被視為等同于任何出現的字元元件。依文化特性而定的正確順序,例如 "AE" (U + 0041、U + 0045)。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.

另請參閱

適用於