StringInfo.ParseCombiningCharacters(String) Metode

Referensi

Definisi

Ruang nama:: System.Globalization

Rakitan:: System.Globalization.dll

Rakitan:: System.Runtime.dll

Rakitan:: mscorlib.dll

Rakitan:: netstandard.dll

Sumber:: StringInfo.cs

Sumber:: StringInfo.cs

Sumber:: StringInfo.cs

Penting

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Mengembalikan indeks dari setiap karakter dasar, pengganti tinggi, atau karakter kontrol dalam string yang ditentukan.

public:
 static cli::array <int> ^ ParseCombiningCharacters(System::String ^ str);

public static int[] ParseCombiningCharacters (string str);

static member ParseCombiningCharacters : string -> int[]

Public Shared Function ParseCombiningCharacters (str As String) As Integer()

Parameter

str: String

String yang akan dicari.

Mengembalikan

Int32[]

Array bilangan bulat yang berisi indeks berbasis nol dari setiap karakter dasar, pengganti tinggi, atau karakter kontrol dalam string yang ditentukan.

Pengecualian

ArgumentNullException

stradalah null.

Contoh

Contoh berikut menunjukkan pemanggilan ParseCombiningCharacters metode . Contoh kode ini adalah bagian dari contoh yang lebih besar yang disediakan untuk StringInfo kelas .

using namespace System;
using namespace System::Text;
using namespace System::Globalization;


// Show how to enumerate each real character (honoring surrogates)
// in a string.

void EnumTextElements(String^ combiningChars)
{
    // This StringBuilder holds the output results.
    StringBuilder^ sb = gcnew StringBuilder();

    // Use the enumerator returned from GetTextElementEnumerator
    // method to examine each real character.
    TextElementEnumerator^ charEnum =
        StringInfo::GetTextElementEnumerator(combiningChars);
    while (charEnum->MoveNext())
    {
        sb->AppendFormat("Character at index {0} is '{1}'{2}", 
            charEnum->ElementIndex, charEnum->GetTextElement(), 
            Environment::NewLine);
    }

    // Show the results.
    Console::WriteLine("Result of GetTextElementEnumerator:");
    Console::WriteLine(sb);
}


// Show how to discover the index of each real character
// (honoring surrogates) in a string.

void EnumTextElementIndexes(String^ combiningChars)
{
    // This StringBuilder holds the output results.
    StringBuilder^ sb = gcnew StringBuilder();

    // Use the ParseCombiningCharacters method to
    // get the index of each real character in the string.
    array <int>^ textElemIndex =
        StringInfo::ParseCombiningCharacters(combiningChars);

    // Iterate through each real character showing the character
    // and the index where it was found.
    for (int i = 0; i < textElemIndex->Length; i++)
    {
        sb->AppendFormat("Character {0} starts at index {1}{2}",
            i, textElemIndex[i], Environment::NewLine);
    }

    // Show the results.
    Console::WriteLine("Result of ParseCombiningCharacters:");
    Console::WriteLine(sb);
}

int main()
{

    // The string below contains combining characters.
    String^ combiningChars = L"a\u0304\u0308bc\u0327";

    // Show each 'character' in the string.
    EnumTextElements(combiningChars);

    // Show the index in the string where each 'character' starts.
    EnumTextElementIndexes(combiningChars);

};

// This code produces the following output.
//
// Result of GetTextElementEnumerator:
// Character at index 0 is 'a-"'
// Character at index 3 is 'b'
// Character at index 4 is 'c,'
//
// Result of ParseCombiningCharacters:
// Character 0 starts at index 0
// Character 1 starts at index 3
// Character 2 starts at index 4

using System;
using System.Text;
using System.Globalization;

public sealed class App {
   static void Main() {
      // The string below contains combining characters.
      String s = "a\u0304\u0308bc\u0327";

      // Show each 'character' in the string.
      EnumTextElements(s);

      // Show the index in the string where each 'character' starts.
      EnumTextElementIndexes(s);
   }

   // Show how to enumerate each real character (honoring surrogates) in a string.
   static void EnumTextElements(String s) {
      // This StringBuilder holds the output results.
      StringBuilder sb = new StringBuilder();

      // Use the enumerator returned from GetTextElementEnumerator
      // method to examine each real character.
      TextElementEnumerator charEnum = StringInfo.GetTextElementEnumerator(s);
      while (charEnum.MoveNext()) {
         sb.AppendFormat(
           "Character at index {0} is '{1}'{2}",
           charEnum.ElementIndex, charEnum.GetTextElement(),
           Environment.NewLine);
      }

      // Show the results.
      Console.WriteLine("Result of GetTextElementEnumerator:");
      Console.WriteLine(sb);
   }

   // Show how to discover the index of each real character (honoring surrogates) in a string.
   static void EnumTextElementIndexes(String s) {
      // This StringBuilder holds the output results.
      StringBuilder sb = new StringBuilder();

      // Use the ParseCombiningCharacters method to
      // get the index of each real character in the string.
      Int32[] textElemIndex = StringInfo.ParseCombiningCharacters(s);

      // Iterate through each real character showing the character and the index where it was found.
      for (Int32 i = 0; i < textElemIndex.Length; i++) {
         sb.AppendFormat(
            "Character {0} starts at index {1}{2}",
            i, textElemIndex[i], Environment.NewLine);
      }

      // Show the results.
      Console.WriteLine("Result of ParseCombiningCharacters:");
      Console.WriteLine(sb);
   }
}

// This code produces the following output:
//
// Result of GetTextElementEnumerator:
// Character at index 0 is 'ā̈'
// Character at index 3 is 'b'
// Character at index 4 is 'ç'
//
// Result of ParseCombiningCharacters:
// Character 0 starts at index 0
// Character 1 starts at index 3
// Character 2 starts at index 4

Imports System.Text
Imports System.Globalization

Public Module Example
   Public Sub Main()
      ' The string below contains combining characters.
      Dim s As String = "a" + ChrW(&h0304) + ChrW(&h0308) + "bc" + ChrW(&h0327)

      ' Show each 'character' in the string.
      EnumTextElements(s)

      ' Show the index in the string where each 'character' starts.
      EnumTextElementIndexes(s)
   End Sub

   ' Show how to enumerate each real character (honoring surrogates) in a string.
   Sub EnumTextElements(s As String)
      ' This StringBuilder holds the output results.
      Dim sb As New StringBuilder()

      ' Use the enumerator returned from GetTextElementEnumerator 
      ' method to examine each real character.
      Dim charEnum As TextElementEnumerator = StringInfo.GetTextElementEnumerator(s)
      Do While charEnum.MoveNext()
         sb.AppendFormat("Character at index {0} is '{1}'{2}",
                         charEnum.ElementIndex, 
                         charEnum.GetTextElement(),
                         Environment.NewLine)
      Loop

      ' Show the results.
      Console.WriteLine("Result of GetTextElementEnumerator:")
      Console.WriteLine(sb)
   End Sub

   ' Show how to discover the index of each real character (honoring surrogates) in a string.
   Sub EnumTextElementIndexes(s As String)
      ' This StringBuilder holds the output results.
      Dim sb As New StringBuilder()

      ' Use the ParseCombiningCharacters method to 
      ' get the index of each real character in the string.
      Dim textElemIndex() As Integer = StringInfo.ParseCombiningCharacters(s)

      ' Iterate through each real character showing the character and the index where it was found.
      For i As Int32 = 0 To textElemIndex.Length - 1
         sb.AppendFormat("Character {0} starts at index {1}{2}",
                         i, textElemIndex(i), Environment.NewLine)
      Next

      ' Show the results.
      Console.WriteLine("Result of ParseCombiningCharacters:")
      Console.WriteLine(sb)
   End Sub
End Module
' The example displays the following output:
'
'       Result of GetTextElementEnumerator:
'       Character at index 0 is 'ā̈'
'       Character at index 3 is 'b'
'       Character at index 4 is 'ç'
'       
'       Result of ParseCombiningCharacters:
'       Character 0 starts at index 0
'       Character 1 starts at index 3
'       Character 2 starts at index 4

Keterangan

Standar Unicode mendefinisikan pasangan pengganti sebagai representasi karakter berkode untuk satu karakter abstrak yang terdiri dari urutan dua unit kode, di mana unit pertama pasangan adalah pengganti tinggi dan yang kedua adalah pengganti rendah. Pengganti tinggi adalah titik kode Unicode dalam rentang U+D800 hingga U+DBFF dan pengganti rendah adalah titik kode Unicode dalam rentang U+DC00 hingga U+DFFF.

Karakter kontrol adalah karakter yang nilai Unicodenya adalah U+007F atau dalam rentang U+0000 hingga U+001F atau U+0080 hingga U+009F.

.NET mendefinisikan elemen teks sebagai satuan teks yang ditampilkan sebagai karakter tunggal, yaitu grafik. Elemen teks dapat menjadi karakter dasar, pasangan pengganti, atau urutan karakter gabungan. Unicode Standard mendefinisikan urutan karakter gabungan sebagai kombinasi karakter dasar dan satu atau beberapa karakter yang menggabungkan. Pasangan pengganti dapat mewakili karakter dasar atau karakter gabungan.

Jika urutan karakter gabungan tidak valid, setiap karakter yang menggabungkan dalam urutan tersebut juga dikembalikan.

Setiap indeks dalam array yang dihasilkan adalah awal elemen teks, yaitu indeks karakter dasar atau pengganti tinggi.

Panjang setiap elemen mudah dihitung sebagai perbedaan antara indeks berturut-turut. Panjang array akan selalu kurang dari atau sama dengan panjang string. Misalnya, mengingat string "\u4f00\u302a\ud800\udc00\u4f01", metode ini mengembalikan indeks 0, 2, dan 4.

Anggota yang Setara

Mulai dari versi 2.0 dari .NET Framework, SubstringByTextElements metode dan LengthInTextElements properti menyediakan implementasi fungsionalitas yang mudah digunakan yang ditawarkan oleh ParseCombiningCharacters metode .

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