StringDictionaryとは? わかりやすく解説

StringDictionary クラス

オブジェクトではなく文字列厳密に指定された値、およびキーを含むハッシュ テーブル実装ます。

名前空間: System.Collections.Specialized
アセンブリ: System (system.dll 内)
構文構文

<SerializableAttribute> _
Public Class StringDictionary
    Implements IEnumerable
Dim instance As StringDictionary
[SerializableAttribute] 
public class StringDictionary : IEnumerable
[SerializableAttribute] 
public ref class StringDictionary : IEnumerable
/** @attribute SerializableAttribute() */ 
public class StringDictionary implements IEnumerable
SerializableAttribute 
public class StringDictionary implements IEnumerable
解説解説

キーには null 参照 (Visual Basic では Nothing) は使用できませんが、値には使用できます

キー大文字と小文字区別せず処理されます。つまり、キーは文字列ディクショナリで使用される前に小文字変換されます。

.NET Framework Version 1.0場合、このクラスはカルチャに依存した文字列比較使用します。ただし、.NET Framework Version 1.1 以降場合、このクラスは文字列を比較するときに CultureInfo.InvariantCulture を使用します。カルチャが比較並べ替え与え影響詳細については、「固有カルチャのデータ比較並べ替え」および「カルチャを認識しい文字操作実行」を参照してください

使用例使用例

StringDictionaryプロパティメソッドいくつかの例次に示します

Imports System
Imports System.Collections
Imports System.Collections.Specialized

Public Class SamplesStringDictionary   

   Public Shared Sub Main()

      ' Creates and initializes a new StringDictionary.
      Dim myCol As New StringDictionary()
      myCol.Add("red", "rojo")
      myCol.Add("green", "verde")
      myCol.Add("blue", "azul")

      ' Display the contents of the collection using For Each. This
 is the preferred method.
      Console.WriteLine("Displays the elements using For Each:")
      PrintKeysAndValues1(myCol)

      ' Display the contents of the collection using the enumerator.
      Console.WriteLine("Displays the elements using the IEnumerator:")
      PrintKeysAndValues2(myCol)

      ' Display the contents of the collection using the Keys, Values,
 Count, and Item properties.
      Console.WriteLine("Displays the elements using the Keys,
 Values, Count, and Item properties:")
      PrintKeysAndValues3(myCol)

      ' Copies the StringDictionary to an array with DictionaryEntry
 elements.
      Dim myArr(myCol.Count) As DictionaryEntry
      myCol.CopyTo(myArr, 0)

      ' Displays the values in the array.
      Console.WriteLine("Displays the elements in the array:")
      Console.WriteLine("   KEY        VALUE")
      Dim i As Integer
      For i = 0 To myArr.Length - 1
         Console.WriteLine("   {0,-10} {1}", myArr(i).Key,
 myArr(i).Value)
      Next i
      Console.WriteLine()

      ' Searches for a value.
      If myCol.ContainsValue("amarillo")
 Then
         Console.WriteLine("The collection contains the value
 ""amarillo"".")
      Else
         Console.WriteLine("The collection does not contain the
 value ""amarillo"".")
      End If
      Console.WriteLine()

      ' Searches for a key and deletes it.
      If myCol.ContainsKey("green")
 Then
         myCol.Remove("green")
      End If
      Console.WriteLine("The collection contains the following
 elements after removing ""green"":")
      PrintKeysAndValues1(myCol)

      ' Clears the entire collection.
      myCol.Clear()
      Console.WriteLine("The collection contains the following
 elements after it is cleared:")
      PrintKeysAndValues1(myCol)

   End Sub 'Main


   ' Uses the For Each statement which hides the complexity of the enumerator.
   ' NOTE: The For Each statement is the preferred way of enumerating
 the contents of a collection.
   Public Shared Sub PrintKeysAndValues1(myCol
 As StringDictionary)
      Console.WriteLine("   KEY                       VALUE")
      Dim de As DictionaryEntry
      For Each de In  myCol
         Console.WriteLine("   {0,-25} {1}", de.Key,
 de.Value)
      Next de
      Console.WriteLine()
   End Sub 'PrintKeysAndValues1


   ' Uses the enumerator. 
   ' NOTE: The For Each statement is the preferred way of enumerating
 the contents of a collection.
   Public Shared Sub PrintKeysAndValues2(myCol
 As StringDictionary)
      Dim myEnumerator As IEnumerator = myCol.GetEnumerator()
      Dim de As DictionaryEntry
      Console.WriteLine("   KEY                       VALUE")
      While myEnumerator.MoveNext()
         de = CType(myEnumerator.Current, DictionaryEntry)
         Console.WriteLine("   {0,-25} {1}", de.Key,
 de.Value)
      End While
      Console.WriteLine()
   End Sub 'PrintKeysAndValues2


   ' Uses the Keys, Values, Count, and Item properties.
   Public Shared Sub PrintKeysAndValues3(myCol
 As StringDictionary)
      Dim myKeys(myCol.Count) As String
      myCol.Keys.CopyTo(myKeys, 0)

      Console.WriteLine("   INDEX KEY                       VALUE")
      Dim i As Integer
      For i = 0 To myCol.Count - 1
         Console.WriteLine("   {0,-5} {1,-25} {2}",
 i, myKeys(i), myCol(myKeys(i)))
      Next i
      Console.WriteLine()
   End Sub 'PrintKeysAndValues3

End Class 'SamplesStringDictionary
 


'This code produces the following output.
'
'Displays the elements using For Each:
'   KEY                       VALUE
'   red                       rojo
'   blue                      azul
'   green                     verde
'
'Displays the elements using the IEnumerator:
'   KEY                       VALUE
'   red                       rojo
'   blue                      azul
'   green                     verde
'
'Displays the elements using the Keys, Values, Count, and Item properties:
'   INDEX KEY                       VALUE
'   0     red                       rojo
'   1     blue                      azul
'   2     green                     verde
'
'Displays the elements in the array:
'   KEY        VALUE
'   red        rojo
'   blue       azul
'   green      verde
'
'
'The collection does not contain the value "amarillo".
'
'The collection contains the following elements after removing "green":
'   KEY                       VALUE
'   red                       rojo
'   blue                      azul
'
'The collection contains the following elements after it is cleared:
'   KEY                       VALUE

using System;
using System.Collections;
using System.Collections.Specialized;

public class SamplesStringDictionary  {

   public static void Main()
  {

      // Creates and initializes a new StringDictionary.
      StringDictionary myCol = new StringDictionary();
      myCol.Add( "red", "rojo" );
      myCol.Add( "green", "verde" );
      myCol.Add( "blue", "azul" );

      // Display the contents of the collection using foreach. This
 is the preferred method.
      Console.WriteLine( "Displays the elements using foreach:"
 );
      PrintKeysAndValues1( myCol );

      // Display the contents of the collection using the enumerator.
      Console.WriteLine( "Displays the elements using the
 IEnumerator:" );
      PrintKeysAndValues2( myCol );

      // Display the contents of the collection using the Keys, Values,
 Count, and Item properties.
      Console.WriteLine( "Displays the elements using the
 Keys, Values, Count, and Item properties:" );
      PrintKeysAndValues3( myCol );

      // Copies the StringDictionary to an array with DictionaryEntry
 elements.
      DictionaryEntry[] myArr = new DictionaryEntry[myCol.Count];
      myCol.CopyTo( myArr, 0 );

      // Displays the values in the array.
      Console.WriteLine( "Displays the elements in the array:"
 );
      Console.WriteLine( "   KEY        VALUE" );
      for ( int i = 0; i < myArr.Length;
 i++ )
         Console.WriteLine( "   {0,-10} {1}", myArr[i].Key, myArr[i].Value
 );
      Console.WriteLine();

      // Searches for a value.
      if ( myCol.ContainsValue( "amarillo" ) )
         Console.WriteLine( "The collection contains the value \"amarillo\"."
 );
      else
         Console.WriteLine( "The collection does not contain the value \"amarillo\"."
 );
      Console.WriteLine();

      // Searches for a key and deletes it.
      if ( myCol.ContainsKey( "green" ) )
         myCol.Remove( "green" );
      Console.WriteLine( "The collection contains the following elements after
 removing \"green\":" );
      PrintKeysAndValues1( myCol );

      // Clears the entire collection.
      myCol.Clear();
      Console.WriteLine( "The collection contains the following elements after
 it is cleared:" );
      PrintKeysAndValues1( myCol );

   }

   // Uses the foreach statement which hides the complexity of the enumerator.
   // NOTE: The foreach statement is the preferred way of enumerating
 the contents of a collection.
   public static void PrintKeysAndValues1(
 StringDictionary myCol )  {
      Console.WriteLine( "   KEY                       VALUE" );
      foreach ( DictionaryEntry de in myCol
 )
         Console.WriteLine( "   {0,-25} {1}", de.Key, de.Value );
      Console.WriteLine();
   }

   // Uses the enumerator. 
   // NOTE: The foreach statement is the preferred way of enumerating
 the contents of a collection.
   public static void PrintKeysAndValues2(
 StringDictionary myCol )  {
      IEnumerator myEnumerator = myCol.GetEnumerator();
      DictionaryEntry de;
      Console.WriteLine( "   KEY                       VALUE" );
      while ( myEnumerator.MoveNext() )  {
         de = (DictionaryEntry) myEnumerator.Current;
         Console.WriteLine( "   {0,-25} {1}", de.Key, de.Value );
      }
      Console.WriteLine();
   }

   // Uses the Keys, Values, Count, and Item properties.
   public static void PrintKeysAndValues3(
 StringDictionary myCol )  {
      String[] myKeys = new String[myCol.Count];
      myCol.Keys.CopyTo( myKeys, 0 );

      Console.WriteLine( "   INDEX KEY                       VALUE" );
      for ( int i = 0; i < myCol.Count;
 i++ )
         Console.WriteLine( "   {0,-5} {1,-25} {2}", i, myKeys[i], myCol[myKeys[i]]
 );
      Console.WriteLine();
   }

}

/*
This code produces the following output.

Displays the elements using foreach:
   KEY                       VALUE
   red                       rojo
   blue                      azul
   green                     verde

Displays the elements using the IEnumerator:
   KEY                       VALUE
   red                       rojo
   blue                      azul
   green                     verde

Displays the elements using the Keys, Values, Count, and Item
 properties:
   INDEX KEY                       VALUE
   0     red                       rojo
   1     blue                      azul
   2     green                     verde

Displays the elements in the array:
   KEY        VALUE
   red        rojo
   blue       azul
   green      verde

The collection does not contain the value "amarillo".

The collection contains the following elements after removing "green":
   KEY                       VALUE
   red                       rojo
   blue                      azul

The collection contains the following elements after it is cleared:
   KEY                       VALUE

*/
#using <System.dll>

using namespace System;
using namespace System::Collections;
using namespace System::Collections::Specialized;
void PrintKeysAndValues2( StringDictionary^ myCol );
void PrintKeysAndValues3( StringDictionary^ myCol );

int main()
{
   // Creates and initializes a new StringDictionary.
   StringDictionary^ myCol = gcnew StringDictionary;
   myCol->Add( "red", "rojo" );
   myCol->Add( "green", "verde" );
   myCol->Add( "blue", "azul" );

   // Display the contents of the collection using the enumerator.
   Console::WriteLine( "Displays the elements using the IEnumerator:"
 );
   PrintKeysAndValues2( myCol );

   // Display the contents of the collection using the Keys, Values,
 Count, and Item properties.
   Console::WriteLine( "Displays the elements using the Keys, Values, Count, and Item
 properties:" );
   PrintKeysAndValues3( myCol );

   // Copies the StringDictionary to an array with DictionaryEntry elements.
   array<DictionaryEntry>^myArr = gcnew array<DictionaryEntry>(myCol->Count);
   myCol->CopyTo( myArr, 0 );

   // Displays the values in the array.
   Console::WriteLine( "Displays the elements in the array:"
 );
   Console::WriteLine( "   KEY        VALUE" );
   for ( int i = 0; i < myArr->Length;
 i++ )
      Console::WriteLine( "   {0,-10} {1}", myArr[ i ].Key, myArr[ i ].Value
 );
   Console::WriteLine();

   // Searches for a value.
   if ( myCol->ContainsValue( "amarillo" ) )
      Console::WriteLine( "The collection contains the value \"amarillo\"."
 );
   else
      Console::WriteLine( "The collection does not contain the value \"amarillo\"."
 );

   Console::WriteLine();
   
   // Searches for a key and deletes it.
   if ( myCol->ContainsKey( "green" ) )
      myCol->Remove( "green" );

   Console::WriteLine( "The collection contains the following elements after
 removing \"green\":" );
   PrintKeysAndValues2( myCol );

   // Clears the entire collection.
   myCol->Clear();
   Console::WriteLine( "The collection contains the following elements after
 it is cleared:" );
   PrintKeysAndValues2( myCol );
}

// Uses the enumerator. 
void PrintKeysAndValues2( StringDictionary^ myCol )
{
   IEnumerator^ myEnumerator = myCol->GetEnumerator();
   DictionaryEntry de;
   Console::WriteLine( "   KEY                       VALUE" );
   while ( myEnumerator->MoveNext() )
   {
      de =  *dynamic_cast<DictionaryEntry^>(myEnumerator->Current);
      Console::WriteLine( "   {0,-25} {1}", de.Key, de.Value );
   }

   Console::WriteLine();
}

// Uses the Keys, Values, Count, and Item properties.
void PrintKeysAndValues3( StringDictionary^ myCol )
{
   array<String^>^myKeys = gcnew array<String^>(myCol->Count);
   myCol->Keys->CopyTo( myKeys, 0 );
   Console::WriteLine( "   INDEX KEY                       VALUE" );
   for ( int i = 0; i < myCol->Count;
 i++ )
      Console::WriteLine( "   {0,-5} {1,-25} {2}", i, myKeys[ i ], myCol[
 myKeys[ i ] ] );
   Console::WriteLine();
}

/*
This code produces the following output.

Displays the elements using the IEnumerator:
   KEY                       VALUE
   red                       rojo
   blue                      azul
   green                     verde

Displays the elements using the Keys, Values, Count, and Item
 properties:
   INDEX KEY                       VALUE
   0     red                       rojo
   1     blue                      azul
   2     green                     verde

Displays the elements in the array:
   KEY        VALUE
   red        rojo
   blue       azul
   green      verde

The collection does not contain the value "amarillo".

The collection contains the following elements after removing "green":
   KEY                       VALUE
   red                       rojo
   blue                      azul

The collection contains the following elements after it is cleared:
   KEY                       VALUE

*/
import System.*;
import System.Collections.*; 
import System.Collections.Specialized.*;

public class SamplesStringDictionary
{
    public static void main(String[]
 args) 
    {
        // Creates and initializes a new StringDictionary.
        StringDictionary myCol =  new StringDictionary();
        myCol.Add("red", "rojo");
        myCol.Add("green", "verde");
        myCol.Add("blue", "azul");
          
        // Display the contents of the collection using for loop.
        // This is the preferred method.
        Console.WriteLine("Displays the elements using for
 loop:");
        PrintKeysAndValues1(myCol);
          
        // Display the contents of the collection using the enumerator.
        Console.WriteLine("Displays the elements using the
 IEnumerator:");
        PrintKeysAndValues2(myCol);
          
        // Display the contents of the collection using the Keys, Values,
 
        // Count, and Item properties.
        Console.WriteLine("Displays the elements using the
 Keys, Values, Count,"
            + "and Item properties:");
        PrintKeysAndValues3(myCol);
          
        // Copies the StringDictionary to an array with DictionaryEntry
 
        // elements.
        DictionaryEntry myArr[] = new DictionaryEntry[myCol.get_Count()];
        myCol.CopyTo(myArr, 0);
             
        // Displays the values in the array.
        Console.WriteLine("Displays the elements in the array:");
        Console.WriteLine("   KEY        VALUE");
        for(int i = 0; i < myArr.length;
 i++) {
            Console.WriteLine("   {0,-10} {1}", myArr[i].get_Key(), 
                myArr[i].get_Value());
        } 
        Console.WriteLine();
          
        // Searches for a value.
        if (myCol.ContainsValue("amarillo")) {
            Console.WriteLine("The collection contains the value \"amarillo\".");
        }
        else {
            Console.WriteLine("The collection does not contain the value "
                + "\"amarillo\".");
        }
        Console.WriteLine();
          
        // Searches for a key and deletes it.
        if (myCol.ContainsKey("green")) {
            myCol.Remove("green");
        }
        Console.WriteLine("The collection contains the following elements after"
            + " removing \"green\":");
        PrintKeysAndValues1(myCol);
          
        // Clears the entire collection.
        myCol.Clear();
        Console.WriteLine("The collection contains the following elements"
  
            + " after it is cleared:");
        PrintKeysAndValues1(myCol);
    } //main

    // Uses the for statement which hides the complexity of the enumerator.
    // NOTE: The for statement is the preferred way of enumerating the
 contents 
    // of a collection.
    public static void PrintKeysAndValues1(StringDictionary
 myCol)
    {
        String strValue;
        String strKeys[] = new String[myCol.get_Count()];
        myCol.get_Keys().CopyTo(strKeys, 0);

        Console.WriteLine("   KEY                       VALUE");
        for (int iCtr = 0; iCtr < myCol.get_Count();
 iCtr++) {
            strValue = myCol.get_Item(strKeys[iCtr]);
            Console.WriteLine("   {0,-25} {1}", strKeys[iCtr], strValue);
        }
        Console.WriteLine();
    } //PrintKeysAndValues1
   
    // Uses the enumerator. 
    // NOTE: The for statement is the preferred way of enumerating the
 
    // contents of a collection.
    public static void PrintKeysAndValues2(StringDictionary
 myCol) 
    {
        IEnumerator myEnumerator = myCol.GetEnumerator();
        DictionaryEntry de;
        Console.WriteLine("   KEY                       VALUE");
        while(myEnumerator.MoveNext()) {
            de =((DictionaryEntry)(myEnumerator.get_Current()));
            Console.WriteLine("   {0,-25} {1}", de.get_Key(), de.get_Value());
        }
        Console.WriteLine();
    } //PrintKeysAndValues2
      
    // Uses the Keys, Values, Count, and Item properties.
    public static void PrintKeysAndValues3(StringDictionary
 myCol) 
    {
        String myKeys[] = new String[myCol.get_Count()];
        myCol.get_Keys().CopyTo(myKeys, 0);
      
        Console.WriteLine("   INDEX KEY                       VALUE");
        for(int i = 0; i < myCol.get_Count();
 i++) {
            Console.WriteLine("   {0,-5} {1,-25} {2}", (Int32)i, myKeys[i],
 
                myCol.get_Item(myKeys[i]));
        } 
        Console.WriteLine();
    } //PrintKeysAndValues3
} //SamplesStringDictionary
 
/*
This code produces the following output.

Displays the elements using for loop:
   KEY                       VALUE
   red                       rojo
   blue                      azul
   green                     verde

Displays the elements using the IEnumerator:
   KEY                       VALUE
   red                       rojo
   blue                      azul
   green                     verde

Displays the elements using the Keys, Values, Count, and Item
 properties:
   INDEX KEY                       VALUE
   0     red                       rojo
   1     blue                      azul
   2     green                     verde

Displays the elements in the array:
   KEY        VALUE
   red        rojo
   blue       azul
   green      verde

The collection does not contain the value "amarillo".

The collection contains the following elements after removing "green":
   KEY                       VALUE
   red                       rojo
   blue                      azul

The collection contains the following elements after it is cleared:
   KEY                       VALUE

*/
継承階層継承階層
System.Object
  System.Collections.Specialized.StringDictionary
スレッド セーフスレッド セーフ
プラットフォームプラットフォーム
バージョン情報バージョン情報
参照参照
関連項目
StringDictionary メンバ
System.Collections.Specialized 名前空間
Hashtable クラス
その他の技術情報
カルチャを認識しい文字操作実行

StringDictionary コンストラクタ

StringDictionary クラス新しインスタンス初期化します。

名前空間: System.Collections.Specialized
アセンブリ: System (system.dll 内)
構文構文

Dim instance As New StringDictionary
public StringDictionary ()
public:
StringDictionary ()
public StringDictionary ()
public function StringDictionary ()
解説解説

このコンストラクタは O(1) 操作です。

使用例使用例

StringDictionaryプロパティメソッドいくつかの例次に示します

Imports System
Imports System.Collections
Imports System.Collections.Specialized

Public Class SamplesStringDictionary   

   Public Shared Sub Main()

      ' Creates and initializes a new StringDictionary.
      Dim myCol As New StringDictionary()
      myCol.Add("red", "rojo")
      myCol.Add("green", "verde")
      myCol.Add("blue", "azul")

      ' Display the contents of the collection using For Each. This
 is the preferred method.
      Console.WriteLine("Displays the elements using For Each:")
      PrintKeysAndValues1(myCol)

      ' Display the contents of the collection using the enumerator.
      Console.WriteLine("Displays the elements using the IEnumerator:")
      PrintKeysAndValues2(myCol)

      ' Display the contents of the collection using the Keys, Values,
 Count, and Item properties.
      Console.WriteLine("Displays the elements using the Keys,
 Values, Count, and Item properties:")
      PrintKeysAndValues3(myCol)

      ' Copies the StringDictionary to an array with DictionaryEntry
 elements.
      Dim myArr(myCol.Count) As DictionaryEntry
      myCol.CopyTo(myArr, 0)

      ' Displays the values in the array.
      Console.WriteLine("Displays the elements in the array:")
      Console.WriteLine("   KEY        VALUE")
      Dim i As Integer
      For i = 0 To myArr.Length - 1
         Console.WriteLine("   {0,-10} {1}", myArr(i).Key,
 myArr(i).Value)
      Next i
      Console.WriteLine()

      ' Searches for a value.
      If myCol.ContainsValue("amarillo")
 Then
         Console.WriteLine("The collection contains the value
 ""amarillo"".")
      Else
         Console.WriteLine("The collection does not contain the
 value ""amarillo"".")
      End If
      Console.WriteLine()

      ' Searches for a key and deletes it.
      If myCol.ContainsKey("green")
 Then
         myCol.Remove("green")
      End If
      Console.WriteLine("The collection contains the following
 elements after removing ""green"":")
      PrintKeysAndValues1(myCol)

      ' Clears the entire collection.
      myCol.Clear()
      Console.WriteLine("The collection contains the following
 elements after it is cleared:")
      PrintKeysAndValues1(myCol)

   End Sub 'Main


   ' Uses the For Each statement which hides the complexity of the enumerator.
   ' NOTE: The For Each statement is the preferred way of enumerating
 the contents of a collection.
   Public Shared Sub PrintKeysAndValues1(myCol
 As StringDictionary)
      Console.WriteLine("   KEY                       VALUE")
      Dim de As DictionaryEntry
      For Each de In  myCol
         Console.WriteLine("   {0,-25} {1}", de.Key,
 de.Value)
      Next de
      Console.WriteLine()
   End Sub 'PrintKeysAndValues1


   ' Uses the enumerator. 
   ' NOTE: The For Each statement is the preferred way of enumerating
 the contents of a collection.
   Public Shared Sub PrintKeysAndValues2(myCol
 As StringDictionary)
      Dim myEnumerator As IEnumerator = myCol.GetEnumerator()
      Dim de As DictionaryEntry
      Console.WriteLine("   KEY                       VALUE")
      While myEnumerator.MoveNext()
         de = CType(myEnumerator.Current, DictionaryEntry)
         Console.WriteLine("   {0,-25} {1}", de.Key,
 de.Value)
      End While
      Console.WriteLine()
   End Sub 'PrintKeysAndValues2


   ' Uses the Keys, Values, Count, and Item properties.
   Public Shared Sub PrintKeysAndValues3(myCol
 As StringDictionary)
      Dim myKeys(myCol.Count) As String
      myCol.Keys.CopyTo(myKeys, 0)

      Console.WriteLine("   INDEX KEY                       VALUE")
      Dim i As Integer
      For i = 0 To myCol.Count - 1
         Console.WriteLine("   {0,-5} {1,-25} {2}",
 i, myKeys(i), myCol(myKeys(i)))
      Next i
      Console.WriteLine()
   End Sub 'PrintKeysAndValues3

End Class 'SamplesStringDictionary
 


'This code produces the following output.
'
'Displays the elements using For Each:
'   KEY                       VALUE
'   red                       rojo
'   blue                      azul
'   green                     verde
'
'Displays the elements using the IEnumerator:
'   KEY                       VALUE
'   red                       rojo
'   blue                      azul
'   green                     verde
'
'Displays the elements using the Keys, Values, Count, and Item properties:
'   INDEX KEY                       VALUE
'   0     red                       rojo
'   1     blue                      azul
'   2     green                     verde
'
'Displays the elements in the array:
'   KEY        VALUE
'   red        rojo
'   blue       azul
'   green      verde
'
'
'The collection does not contain the value "amarillo".
'
'The collection contains the following elements after removing "green":
'   KEY                       VALUE
'   red                       rojo
'   blue                      azul
'
'The collection contains the following elements after it is cleared:
'   KEY                       VALUE

using System;
using System.Collections;
using System.Collections.Specialized;

public class SamplesStringDictionary  {

   public static void Main()
  {

      // Creates and initializes a new StringDictionary.
      StringDictionary myCol = new StringDictionary();
      myCol.Add( "red", "rojo" );
      myCol.Add( "green", "verde" );
      myCol.Add( "blue", "azul" );

      // Display the contents of the collection using foreach. This
 is the preferred method.
      Console.WriteLine( "Displays the elements using foreach:"
 );
      PrintKeysAndValues1( myCol );

      // Display the contents of the collection using the enumerator.
      Console.WriteLine( "Displays the elements using the
 IEnumerator:" );
      PrintKeysAndValues2( myCol );

      // Display the contents of the collection using the Keys, Values,
 Count, and Item properties.
      Console.WriteLine( "Displays the elements using the
 Keys, Values, Count, and Item properties:" );
      PrintKeysAndValues3( myCol );

      // Copies the StringDictionary to an array with DictionaryEntry
 elements.
      DictionaryEntry[] myArr = new DictionaryEntry[myCol.Count];
      myCol.CopyTo( myArr, 0 );

      // Displays the values in the array.
      Console.WriteLine( "Displays the elements in the array:"
 );
      Console.WriteLine( "   KEY        VALUE" );
      for ( int i = 0; i < myArr.Length;
 i++ )
         Console.WriteLine( "   {0,-10} {1}", myArr[i].Key, myArr[i].Value
 );
      Console.WriteLine();

      // Searches for a value.
      if ( myCol.ContainsValue( "amarillo" ) )
         Console.WriteLine( "The collection contains the value \"amarillo\"."
 );
      else
         Console.WriteLine( "The collection does not contain the value \"amarillo\"."
 );
      Console.WriteLine();

      // Searches for a key and deletes it.
      if ( myCol.ContainsKey( "green" ) )
         myCol.Remove( "green" );
      Console.WriteLine( "The collection contains the following elements after
 removing \"green\":" );
      PrintKeysAndValues1( myCol );

      // Clears the entire collection.
      myCol.Clear();
      Console.WriteLine( "The collection contains the following elements after
 it is cleared:" );
      PrintKeysAndValues1( myCol );

   }

   // Uses the foreach statement which hides the complexity of the enumerator.
   // NOTE: The foreach statement is the preferred way of enumerating
 the contents of a collection.
   public static void PrintKeysAndValues1(
 StringDictionary myCol )  {
      Console.WriteLine( "   KEY                       VALUE" );
      foreach ( DictionaryEntry de in myCol
 )
         Console.WriteLine( "   {0,-25} {1}", de.Key, de.Value );
      Console.WriteLine();
   }

   // Uses the enumerator. 
   // NOTE: The foreach statement is the preferred way of enumerating
 the contents of a collection.
   public static void PrintKeysAndValues2(
 StringDictionary myCol )  {
      IEnumerator myEnumerator = myCol.GetEnumerator();
      DictionaryEntry de;
      Console.WriteLine( "   KEY                       VALUE" );
      while ( myEnumerator.MoveNext() )  {
         de = (DictionaryEntry) myEnumerator.Current;
         Console.WriteLine( "   {0,-25} {1}", de.Key, de.Value );
      }
      Console.WriteLine();
   }

   // Uses the Keys, Values, Count, and Item properties.
   public static void PrintKeysAndValues3(
 StringDictionary myCol )  {
      String[] myKeys = new String[myCol.Count];
      myCol.Keys.CopyTo( myKeys, 0 );

      Console.WriteLine( "   INDEX KEY                       VALUE" );
      for ( int i = 0; i < myCol.Count;
 i++ )
         Console.WriteLine( "   {0,-5} {1,-25} {2}", i, myKeys[i], myCol[myKeys[i]]
 );
      Console.WriteLine();
   }

}

/*
This code produces the following output.

Displays the elements using foreach:
   KEY                       VALUE
   red                       rojo
   blue                      azul
   green                     verde

Displays the elements using the IEnumerator:
   KEY                       VALUE
   red                       rojo
   blue                      azul
   green                     verde

Displays the elements using the Keys, Values, Count, and Item
 properties:
   INDEX KEY                       VALUE
   0     red                       rojo
   1     blue                      azul
   2     green                     verde

Displays the elements in the array:
   KEY        VALUE
   red        rojo
   blue       azul
   green      verde

The collection does not contain the value "amarillo".

The collection contains the following elements after removing "green":
   KEY                       VALUE
   red                       rojo
   blue                      azul

The collection contains the following elements after it is cleared:
   KEY                       VALUE

*/
#using <System.dll>

using namespace System;
using namespace System::Collections;
using namespace System::Collections::Specialized;
void PrintKeysAndValues2( StringDictionary^ myCol );
void PrintKeysAndValues3( StringDictionary^ myCol );

int main()
{
   // Creates and initializes a new StringDictionary.
   StringDictionary^ myCol = gcnew StringDictionary;
   myCol->Add( "red", "rojo" );
   myCol->Add( "green", "verde" );
   myCol->Add( "blue", "azul" );

   // Display the contents of the collection using the enumerator.
   Console::WriteLine( "Displays the elements using the IEnumerator:"
 );
   PrintKeysAndValues2( myCol );

   // Display the contents of the collection using the Keys, Values,
 Count, and Item properties.
   Console::WriteLine( "Displays the elements using the Keys, Values, Count, and Item
 properties:" );
   PrintKeysAndValues3( myCol );

   // Copies the StringDictionary to an array with DictionaryEntry elements.
   array<DictionaryEntry>^myArr = gcnew array<DictionaryEntry>(myCol->Count);
   myCol->CopyTo( myArr, 0 );

   // Displays the values in the array.
   Console::WriteLine( "Displays the elements in the array:"
 );
   Console::WriteLine( "   KEY        VALUE" );
   for ( int i = 0; i < myArr->Length;
 i++ )
      Console::WriteLine( "   {0,-10} {1}", myArr[ i ].Key, myArr[ i ].Value
 );
   Console::WriteLine();

   // Searches for a value.
   if ( myCol->ContainsValue( "amarillo" ) )
      Console::WriteLine( "The collection contains the value \"amarillo\"."
 );
   else
      Console::WriteLine( "The collection does not contain the value \"amarillo\"."
 );

   Console::WriteLine();
   
   // Searches for a key and deletes it.
   if ( myCol->ContainsKey( "green" ) )
      myCol->Remove( "green" );

   Console::WriteLine( "The collection contains the following elements after
 removing \"green\":" );
   PrintKeysAndValues2( myCol );

   // Clears the entire collection.
   myCol->Clear();
   Console::WriteLine( "The collection contains the following elements after
 it is cleared:" );
   PrintKeysAndValues2( myCol );
}

// Uses the enumerator. 
void PrintKeysAndValues2( StringDictionary^ myCol )
{
   IEnumerator^ myEnumerator = myCol->GetEnumerator();
   DictionaryEntry de;
   Console::WriteLine( "   KEY                       VALUE" );
   while ( myEnumerator->MoveNext() )
   {
      de =  *dynamic_cast<DictionaryEntry^>(myEnumerator->Current);
      Console::WriteLine( "   {0,-25} {1}", de.Key, de.Value );
   }

   Console::WriteLine();
}

// Uses the Keys, Values, Count, and Item properties.
void PrintKeysAndValues3( StringDictionary^ myCol )
{
   array<String^>^myKeys = gcnew array<String^>(myCol->Count);
   myCol->Keys->CopyTo( myKeys, 0 );
   Console::WriteLine( "   INDEX KEY                       VALUE" );
   for ( int i = 0; i < myCol->Count;
 i++ )
      Console::WriteLine( "   {0,-5} {1,-25} {2}", i, myKeys[ i ], myCol[
 myKeys[ i ] ] );
   Console::WriteLine();
}

/*
This code produces the following output.

Displays the elements using the IEnumerator:
   KEY                       VALUE
   red                       rojo
   blue                      azul
   green                     verde

Displays the elements using the Keys, Values, Count, and Item
 properties:
   INDEX KEY                       VALUE
   0     red                       rojo
   1     blue                      azul
   2     green                     verde

Displays the elements in the array:
   KEY        VALUE
   red        rojo
   blue       azul
   green      verde

The collection does not contain the value "amarillo".

The collection contains the following elements after removing "green":
   KEY                       VALUE
   red                       rojo
   blue                      azul

The collection contains the following elements after it is cleared:
   KEY                       VALUE

*/
import System.*;
import System.Collections.*; 
import System.Collections.Specialized.*;

public class SamplesStringDictionary
{
    public static void main(String[]
 args) 
    {
        // Creates and initializes a new StringDictionary.
        StringDictionary myCol =  new StringDictionary();
        myCol.Add("red", "rojo");
        myCol.Add("green", "verde");
        myCol.Add("blue", "azul");
          
        // Display the contents of the collection using for loop.
        // This is the preferred method.
        Console.WriteLine("Displays the elements using for
 loop:");
        PrintKeysAndValues1(myCol);
          
        // Display the contents of the collection using the enumerator.
        Console.WriteLine("Displays the elements using the
 IEnumerator:");
        PrintKeysAndValues2(myCol);
          
        // Display the contents of the collection using the Keys, Values,
 
        // Count, and Item properties.
        Console.WriteLine("Displays the elements using the
 Keys, Values, Count,"
            + "and Item properties:");
        PrintKeysAndValues3(myCol);
          
        // Copies the StringDictionary to an array with DictionaryEntry
 
        // elements.
        DictionaryEntry myArr[] = new DictionaryEntry[myCol.get_Count()];
        myCol.CopyTo(myArr, 0);
             
        // Displays the values in the array.
        Console.WriteLine("Displays the elements in the array:");
        Console.WriteLine("   KEY        VALUE");
        for(int i = 0; i < myArr.length;
 i++) {
            Console.WriteLine("   {0,-10} {1}", myArr[i].get_Key(), 
                myArr[i].get_Value());
        } 
        Console.WriteLine();
          
        // Searches for a value.
        if (myCol.ContainsValue("amarillo")) {
            Console.WriteLine("The collection contains the value \"amarillo\".");
        }
        else {
            Console.WriteLine("The collection does not contain the value "
                + "\"amarillo\".");
        }
        Console.WriteLine();
          
        // Searches for a key and deletes it.
        if (myCol.ContainsKey("green")) {
            myCol.Remove("green");
        }
        Console.WriteLine("The collection contains the following elements after"
            + " removing \"green\":");
        PrintKeysAndValues1(myCol);
          
        // Clears the entire collection.
        myCol.Clear();
        Console.WriteLine("The collection contains the following elements"
  
            + " after it is cleared:");
        PrintKeysAndValues1(myCol);
    } //main

    // Uses the for statement which hides the complexity of the enumerator.
    // NOTE: The for statement is the preferred way of enumerating the
 contents 
    // of a collection.
    public static void PrintKeysAndValues1(StringDictionary
 myCol)
    {
        String strValue;
        String strKeys[] = new String[myCol.get_Count()];
        myCol.get_Keys().CopyTo(strKeys, 0);

        Console.WriteLine("   KEY                       VALUE");
        for (int iCtr = 0; iCtr < myCol.get_Count();
 iCtr++) {
            strValue = myCol.get_Item(strKeys[iCtr]);
            Console.WriteLine("   {0,-25} {1}", strKeys[iCtr], strValue);
        }
        Console.WriteLine();
    } //PrintKeysAndValues1
   
    // Uses the enumerator. 
    // NOTE: The for statement is the preferred way of enumerating the
 
    // contents of a collection.
    public static void PrintKeysAndValues2(StringDictionary
 myCol) 
    {
        IEnumerator myEnumerator = myCol.GetEnumerator();
        DictionaryEntry de;
        Console.WriteLine("   KEY                       VALUE");
        while(myEnumerator.MoveNext()) {
            de =((DictionaryEntry)(myEnumerator.get_Current()));
            Console.WriteLine("   {0,-25} {1}", de.get_Key(), de.get_Value());
        }
        Console.WriteLine();
    } //PrintKeysAndValues2
      
    // Uses the Keys, Values, Count, and Item properties.
    public static void PrintKeysAndValues3(StringDictionary
 myCol) 
    {
        String myKeys[] = new String[myCol.get_Count()];
        myCol.get_Keys().CopyTo(myKeys, 0);
      
        Console.WriteLine("   INDEX KEY                       VALUE");
        for(int i = 0; i < myCol.get_Count();
 i++) {
            Console.WriteLine("   {0,-5} {1,-25} {2}", (Int32)i, myKeys[i],
 
                myCol.get_Item(myKeys[i]));
        } 
        Console.WriteLine();
    } //PrintKeysAndValues3
} //SamplesStringDictionary
 
/*
This code produces the following output.

Displays the elements using for loop:
   KEY                       VALUE
   red                       rojo
   blue                      azul
   green                     verde

Displays the elements using the IEnumerator:
   KEY                       VALUE
   red                       rojo
   blue                      azul
   green                     verde

Displays the elements using the Keys, Values, Count, and Item
 properties:
   INDEX KEY                       VALUE
   0     red                       rojo
   1     blue                      azul
   2     green                     verde

Displays the elements in the array:
   KEY        VALUE
   red        rojo
   blue       azul
   green      verde

The collection does not contain the value "amarillo".

The collection contains the following elements after removing "green":
   KEY                       VALUE
   red                       rojo
   blue                      azul

The collection contains the following elements after it is cleared:
   KEY                       VALUE

*/
プラットフォームプラットフォーム
バージョン情報バージョン情報
参照参照
関連項目
StringDictionary クラス
StringDictionary メンバ
System.Collections.Specialized 名前空間

StringDictionary プロパティ


パブリック プロパティパブリック プロパティ

  名前 説明
パブリック プロパティ Values StringDictionary 内の値のコレクション取得します
参照参照

関連項目

StringDictionary クラス
System.Collections.Specialized 名前空間
Hashtable クラス

その他の技術情報

カルチャを認識しい文字操作実行

StringDictionary メソッド


パブリック メソッドパブリック メソッド

( プロテクト メソッド参照)
  名前 説明
パブリック メソッド Add 指定したキーおよび値を持つエントリを StringDictionary に追加します
パブリック メソッド Clear StringDictionary からすべてのエントリを削除します
パブリック メソッド ContainsKey StringDictionary特定のキー格納されているかどうか確認します
パブリック メソッド ContainsValue StringDictionary特定の値格納されているかどうか確認します
パブリック メソッド CopyTo 1 次元Array インスタンス指定したインデックス位置に、文字列ディクショナリの値をコピーします
パブリック メソッド Equals  オーバーロードされます2 つObject インスタンス等しかどうか判断します。 ( Object から継承されます。)
パブリック メソッド GetEnumerator 文字列ディクショナリを反復処理する列挙子を返します
パブリック メソッド GetHashCode  特定の型のハッシュ関数として機能します。GetHashCode は、ハッシュ アルゴリズムや、ハッシュ テーブルのようなデータ構造での使用適してます。 ( Object から継承されます。)
パブリック メソッド GetType  現在のインスタンスType取得します。 ( Object から継承されます。)
パブリック メソッド ReferenceEquals  指定した複数Object インスタンス同一かどうか判断します。 ( Object から継承されます。)
パブリック メソッド Remove 指定したキーを持つエントリを文字列ディクショナリから削除します
パブリック メソッド ToString  現在の Object を表す String返します。 ( Object から継承されます。)
プロテクト メソッドプロテクト メソッド
参照参照

関連項目

StringDictionary クラス
System.Collections.Specialized 名前空間
Hashtable クラス

その他の技術情報

カルチャを認識しい文字操作実行

StringDictionary メンバ

オブジェクトではなく文字列厳密に指定された値、およびキーを含むハッシュ テーブル実装ます。

StringDictionary データ型公開されるメンバを以下の表に示します


パブリック コンストラクタパブリック コンストラクタ
  名前 説明
パブリック メソッド StringDictionary StringDictionary クラス新しインスタンス初期化します。
パブリック プロパティパブリック プロパティ
  名前 説明
パブリック プロパティ Values StringDictionary 内の値のコレクション取得します
パブリック メソッドパブリック メソッド
( プロテクト メソッド参照)
  名前 説明
パブリック メソッド Add 指定したキーおよび値を持つエントリを StringDictionary追加します
パブリック メソッド Clear StringDictionary からすべてのエントリを削除します
パブリック メソッド ContainsKey StringDictionary特定のキー格納されているかどうか確認します
パブリック メソッド ContainsValue StringDictionary特定の値格納されているかどうか確認します
パブリック メソッド CopyTo 1 次元Array インスタンス指定したインデックス位置に、文字列ディクショナリの値をコピーします
パブリック メソッド Equals  オーバーロードされます2 つObject インスタンス等しかどうか判断します。 (Object から継承されます。)
パブリック メソッド GetEnumerator 文字列ディクショナリを反復処理する列挙子を返します
パブリック メソッド GetHashCode  特定の型のハッシュ関数として機能します。GetHashCode は、ハッシュ アルゴリズムや、ハッシュ テーブルのようなデータ構造での使用適してます。 (Object から継承されます。)
パブリック メソッド GetType  現在のインスタンスType取得します。 (Object から継承されます。)
パブリック メソッド ReferenceEquals  指定した複数Object インスタンス同一かどうか判断します。 (Object から継承されます。)
パブリック メソッド Remove 指定したキーを持つエントリを文字列ディクショナリから削除します
パブリック メソッド ToString  現在の Object を表す String返します。 (Object から継承されます。)
プロテクト メソッドプロテクト メソッド
参照参照

関連項目

StringDictionary クラス
System.Collections.Specialized 名前空間
Hashtable クラス

その他の技術情報

カルチャを認識しい文字操作実行



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