ListDictionaryとは? わかりやすく解説

ListDictionary クラス

シングルリンク リスト使用して IDictionary実装ます。格納する項目数通常 10 以下であるコレクションに対して推奨されます。

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

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

これは、シングルリンク リスト使用した IDictionary の単純な実装です。要素数が 10 以下の場合は、この実装の方が Hashtable よりもサイズ小さく、処理が高速なります多く要素にとってパフォーマンスが重要である場合、この実装使用しないください

ListDictionary 内の項目には保証され順序はありません。つまり、コード現在の順序依存しません。ListDictionaryキーによる高速検索のために実装されます。項目の実際内部的順序実装依存し製品将来バージョン変更される可能性あります

ItemAddRemove、Contains などのメンバは、nCount である O(n) 操作です。

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

C# 言語foreach ステートメント (Visual Basic では for each) は、コレクション内の各要素の型を必要としますListDictionary各要素キー/値ペアであるため、要素の型は、キーの型や値の型にはなりません。その代わり要素の型は DictionaryEntryなります。例 :

foreach (DictionaryEntry de in myListDictionary)
 {...}
For Each de As DictionaryEntry
 In myListDictionary
  ...
Next de

foreach ステートメントは、列挙子のラッパーです。これは、コレクションからの読み取りだけを許可しコレクションへの書き込み防ぎます

使用例使用例

ListDictionary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 SamplesListDictionary   

   Public Shared Sub Main()

      ' Creates and initializes a new ListDictionary.
      Dim myCol As New ListDictionary()
      myCol.Add("Braeburn Apples", "1.49")
      myCol.Add("Fuji Apples", "1.29")
      myCol.Add("Gala Apples", "1.49")
      myCol.Add("Golden Delicious Apples", "1.29")
      myCol.Add("Granny Smith Apples", "0.89")
      myCol.Add("Red Delicious Apples", "0.99")

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

      ' Display the contents of the collection using the enumerator.
      Console.WriteLine("Displays the elements using the IDictionaryEnumerator:")
      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 ListDictionary 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,-25} {1}", myArr(i).Key,
 myArr(i).Value)
      Next i
      Console.WriteLine()

      ' Searches for a key.
      If myCol.Contains("Kiwis")
 Then
         Console.WriteLine("The collection contains the key ""Kiwis"".")
      Else
         Console.WriteLine("The collection does not contain the
 key ""Kiwis"".")
      End If
      Console.WriteLine()

      ' Deletes a key.
      myCol.Remove("Plums")
      Console.WriteLine("The collection contains the following
 elements after removing ""Plums"":")
      PrintKeysAndValues(myCol)

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

      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 'PrintKeysAndValues


   ' 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 IDictionary)
      Dim myEnumerator As IDictionaryEnumerator
 = myCol.GetEnumerator()

      Console.WriteLine("   KEY                       VALUE")
      While myEnumerator.MoveNext()
         Console.WriteLine("   {0,-25} {1}", myEnumerator.Key,
 myEnumerator.Value)
      End While
      Console.WriteLine()

   End Sub 'PrintKeysAndValues2


   ' Uses the Keys, Values, Count, and Item properties.
   Public Shared Sub PrintKeysAndValues3(myCol
 As ListDictionary)
      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 'SamplesListDictionary
 


'This code produces the following output.
'Note that because a dictionary is implemented for fast keyed access
 the order
'of the items in the dictionary are not gauranteed and, as a result,
 should not
'be depended on.
'
'Displays the elements using for each:
'   KEY                       VALUE
'   Braeburn Apples           1.49
'   Fuji Apples               1.29
'   Gala Apples               1.49
'   Golden Delicious Apples   1.29
'   Granny Smith Apples       0.89
'   Red Delicious Apples      0.99
'
'Displays the elements using the IDictionaryEnumerator:
'   KEY                       VALUE
'   Braeburn Apples           1.49
'   Fuji Apples               1.29
'   Gala Apples               1.49
'   Golden Delicious Apples   1.29
'   Granny Smith Apples       0.89
'   Red Delicious Apples      0.99
'
'Displays the elements using the Keys, Values, Count, and Item properties:
'   INDEX KEY                       VALUE
'   0     Braeburn Apples           1.49
'   1     Fuji Apples               1.29
'   2     Gala Apples               1.49
'   3     Golden Delicious Apples   1.29
'   4     Granny Smith Apples       0.89
'   5     Red Delicious Apples      0.99
'
'Displays the elements in the array:
'   KEY                       VALUE
'   Braeburn Apples           1.49
'   Fuji Apples               1.29
'   Gala Apples               1.49
'   Golden Delicious Apples   1.29
'   Granny Smith Apples       0.89
'   Red Delicious Apples      0.99
'
'The collection does not contain the key "Kiwis".
'
'The collection contains the following elements after removing "Plums":
'   KEY                       VALUE
'   Braeburn Apples           1.49
'   Fuji Apples               1.29
'   Gala Apples               1.49
'   Golden Delicious Apples   1.29
'   Granny Smith Apples       0.89
'   Red Delicious Apples      0.99
'
'The collection contains the following elements after it is cleared:
'   KEY                       VALUE
'

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

public class SamplesListDictionary  {

   public static void Main()
  {

      // Creates and initializes a new ListDictionary.
      ListDictionary myCol = new ListDictionary();
      myCol.Add( "Braeburn Apples", "1.49" );
      myCol.Add( "Fuji Apples", "1.29" );
      myCol.Add( "Gala Apples", "1.49" );
      myCol.Add( "Golden Delicious Apples", "1.29" );
      myCol.Add( "Granny Smith Apples", "0.89" );
      myCol.Add( "Red Delicious Apples", "0.99" );

      // 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
 IDictionaryEnumerator:" );
      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 ListDictionary 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,-25} {1}", myArr[i].Key, myArr[i].Value
 );
      Console.WriteLine();

      // Searches for a key.
      if ( myCol.Contains( "Kiwis" ) )
         Console.WriteLine( "The collection contains the key \"Kiwis\"."
 );
      else
         Console.WriteLine( "The collection does not contain the key \"Kiwis\"."
 );
      Console.WriteLine();

      // Deletes a key.
      myCol.Remove( "Plums" );
      Console.WriteLine( "The collection contains the following elements after
 removing \"Plums\":" );
      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(
 IDictionary 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(
 IDictionary myCol )  {
      IDictionaryEnumerator myEnumerator = myCol.GetEnumerator();
      Console.WriteLine( "   KEY                       VALUE" );
      while ( myEnumerator.MoveNext() )
         Console.WriteLine( "   {0,-25} {1}", myEnumerator.Key, myEnumerator.Value
 );
      Console.WriteLine();
   }

   // Uses the Keys, Values, Count, and Item properties.
   public static void PrintKeysAndValues3(
 ListDictionary 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 output similar to the following.
Note that because a dictionary is implemented for fast keyed access
 the order
of the items in the dictionary are not gauranteed and, as a result,
 should not
be depended on.

Displays the elements using foreach:
   KEY                       VALUE
   Braeburn Apples           1.49
   Fuji Apples               1.29
   Gala Apples               1.49
   Golden Delicious Apples   1.29
   Granny Smith Apples       0.89
   Red Delicious Apples      0.99

Displays the elements using the IDictionaryEnumerator:
   KEY                       VALUE
   Braeburn Apples           1.49
   Fuji Apples               1.29
   Gala Apples               1.49
   Golden Delicious Apples   1.29
   Granny Smith Apples       0.89
   Red Delicious Apples      0.99

Displays the elements using the Keys, Values, Count, and Item
 properties:
   INDEX KEY                       VALUE
   0     Braeburn Apples           1.49
   1     Fuji Apples               1.29
   2     Gala Apples               1.49
   3     Golden Delicious Apples   1.29
   4     Granny Smith Apples       0.89
   5     Red Delicious Apples      0.99

Displays the elements in the array:
   KEY                       VALUE
   Braeburn Apples           1.49
   Fuji Apples               1.29
   Gala Apples               1.49
   Golden Delicious Apples   1.29
   Granny Smith Apples       0.89
   Red Delicious Apples      0.99

The collection does not contain the key "Kiwis".

The collection contains the following elements after removing "Plums":
   KEY                       VALUE
   Braeburn Apples           1.49
   Fuji Apples               1.29
   Gala Apples               1.49
   Golden Delicious Apples   1.29
   Granny Smith Apples       0.89
   Red Delicious Apples      0.99

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 PrintKeysAndValues1( IDictionary^ myCol );
void PrintKeysAndValues2( IDictionary^ myCol );
void PrintKeysAndValues3( ListDictionary^ myCol );

int main()
{
   // Creates and initializes a new ListDictionary.
   ListDictionary^ myCol = gcnew ListDictionary;
   myCol->Add( "Braeburn Apples", "1.49" );
   myCol->Add( "Fuji Apples", "1.29" );
   myCol->Add( "Gala Apples", "1.49" );
   myCol->Add( "Golden Delicious Apples", "1.29" );
   myCol->Add( "Granny Smith Apples", "0.89" );
   myCol->Add( "Red Delicious Apples", "0.99" );

   // 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 IDictionaryEnumerator:"
 );
   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 ListDictionary 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,-25} {1}", myArr[ i ].Key, myArr[ i ].Value
 );
   Console::WriteLine();

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

   Console::WriteLine();

   // Deletes a key.
   myCol->Remove( "Plums" );
   Console::WriteLine( "The collection contains the following elements after
 removing \"Plums\":" );
   PrintKeysAndValues2( myCol );

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

// 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.
void PrintKeysAndValues1( IDictionary^ myCol )  {
   Console::WriteLine( "   KEY                       VALUE" );
   for each ( DictionaryEntry^ de in myCol
 )
      Console::WriteLine( "   {0,-25} {1}", de->Key, de->Value );
   Console::WriteLine();
}

// Uses the enumerator. 
void PrintKeysAndValues2( IDictionary^ myCol )
{
   IDictionaryEnumerator^ myEnumerator = myCol->GetEnumerator();
   Console::WriteLine( "   KEY                       VALUE" );
   while ( myEnumerator->MoveNext() )
      Console::WriteLine( "   {0,-25} {1}", myEnumerator->Key, myEnumerator->Value
 );
   Console::WriteLine();
}

// Uses the Keys, Values, Count, and Item properties.
void PrintKeysAndValues3( ListDictionary^ 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 for each:
   KEY                       VALUE
   Braeburn Apples           1.49
   Fuji Apples               1.29
   Gala Apples               1.49
   Golden Delicious Apples   1.29
   Granny Smith Apples       0.89
   Red Delicious Apples      0.99

Displays the elements using the IDictionaryEnumerator:
   KEY                       VALUE
   Braeburn Apples           1.49
   Fuji Apples               1.29
   Gala Apples               1.49
   Golden Delicious Apples   1.29
   Granny Smith Apples       0.89
   Red Delicious Apples      0.99

Displays the elements using the Keys, Values, Count, and Item
 properties:
   INDEX KEY                       VALUE
   0     Braeburn Apples           1.49
   1     Fuji Apples               1.29
   2     Gala Apples               1.49
   3     Golden Delicious Apples   1.29
   4     Granny Smith Apples       0.89
   5     Red Delicious Apples      0.99

Displays the elements in the array:
   KEY                       VALUE
   Braeburn Apples           1.49
   Fuji Apples               1.29
   Gala Apples               1.49
   Golden Delicious Apples   1.29
   Granny Smith Apples       0.89
   Red Delicious Apples      0.99

The collection does not contain the key "Kiwis".

The collection contains the following elements after removing "Plums":
   KEY                       VALUE
   Braeburn Apples           1.49
   Fuji Apples               1.29
   Gala Apples               1.49
   Golden Delicious Apples   1.29
   Granny Smith Apples       0.89
   Red Delicious Apples      0.99

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


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

public class SamplesListDictionary
{
    public static void main(String[]
 args)
    {
        // Creates and initializes a new ListDictionary.
        ListDictionary myCol =  new ListDictionary();
        myCol.Add("Braeburn Apples", "1.49");
        myCol.Add("Fuji Apples", "1.29");
        myCol.Add("Gala Apples", "1.49");
        myCol.Add("Golden Delicious Apples", "1.29");
        myCol.Add("Granny Smith Apples", "0.89");
        myCol.Add("Red Delicious Apples", "0.99");

        // Display the contents of the collection using for. This is
 the
        // preferred method.
        Console.WriteLine("Displays the elements using for:");
        PrintKeysAndValues1(myCol);
          
        // Display the contents of the collection using the enumerator.
        Console.WriteLine("Displays the elements using the"
            + " IDictionaryEnumerator:");
        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 ListDictionary 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,-25} {1}", myArr[i].get_Key(), 
                myArr[i].get_Value());
        } 
        Console.WriteLine();
          
        // Searches for a key.
        if (myCol.Contains("Kiwis")) {
            Console.WriteLine("The collection contains the key \"Kiwis\".");
        }
        else {
            Console.WriteLine("The collection does not contain the key"
                + " \"Kiwis\".");
        }
        Console.WriteLine();
          
        // Deletes a key.
        myCol.Remove("Plums");
        Console.WriteLine("The collection contains the following elements"
            + " after removing \"Plums\":");
        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(IDictionary
 myCol) 
    {
        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++) {
            Console.WriteLine("   {0,-25} {1}", strKeys[iCtr],
                myCol.get_Item(strKeys[iCtr]));
        }
        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(IDictionary
 myCol) 
    {
        IDictionaryEnumerator myEnumerator = myCol.GetEnumerator();
        Console.WriteLine("   KEY                       VALUE");
        while(myEnumerator.MoveNext()) {
            Console.WriteLine("   {0,-25} {1}", myEnumerator.get_Key()
,
            myEnumerator.get_Value());
        }
        Console.WriteLine();
    } //PrintKeysAndValues2
   
    // Uses the Keys, Values, Count, and Item properties.
    public static void PrintKeysAndValues3(ListDictionary
 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++) {
            System.Console.WriteLine("   {0,-5} {1,-25} {2}",(Int32)i,
 
                myKeys[i],myCol.get_Item(myKeys[i]));
        } 
        Console.WriteLine();
    } //PrintKeysAndValues3
} //SamplesListDictionary
 
/*
Displays the elements using for:
   KEY                       VALUE
   Braeburn Apples           1.49
   Fuji Apples               1.29
   Gala Apples               1.49
   Golden Delicious Apples   1.29
   Granny Smith Apples       0.89
   Red Delicious Apples      0.99

Displays the elements using the IDictionaryEnumerator:
   KEY                       VALUE
   Braeburn Apples           1.49
   Fuji Apples               1.29
   Gala Apples               1.49
   Golden Delicious Apples   1.29
   Granny Smith Apples       0.89
   Red Delicious Apples      0.99

Displays the elements using the Keys, Values, Count, and Item
 properties:
   INDEX KEY                       VALUE
   0     Braeburn Apples           1.49
   1     Fuji Apples               1.29
   2     Gala Apples               1.49
   3     Golden Delicious Apples   1.29
   4     Granny Smith Apples       0.89
   5     Red Delicious Apples      0.99

Displays the elements in the array:
   KEY                       VALUE
   Braeburn Apples           1.49
   Fuji Apples               1.29
   Gala Apples               1.49
   Golden Delicious Apples   1.29
   Granny Smith Apples       0.89
   Red Delicious Apples      0.99

The collection does not contain the key "Kiwis".

The collection contains the following elements after removing "Plums":
   KEY                       VALUE
   Braeburn Apples           1.49
   Fuji Apples               1.29
   Gala Apples               1.49
   Golden Delicious Apples   1.29
   Granny Smith Apples       0.89
   Red Delicious Apples      0.99

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.ListDictionary
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

ListDictionary コンストラクタ ()

既定比較演算子使用して空の ListDictionary を作成します

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

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

比較演算子2 つキー等しかどうか判断しますListDictionary 内のすべてのキー一意である必要があります既定比較演算子は、キーの Object.Equals の実装です。

このコンストラクタは O(1) 操作です。

使用例使用例

ListDictionary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 SamplesListDictionary   

   Public Shared Sub Main()

      ' Creates and initializes a new ListDictionary.
      Dim myCol As New ListDictionary()
      myCol.Add("Braeburn Apples", "1.49")
      myCol.Add("Fuji Apples", "1.29")
      myCol.Add("Gala Apples", "1.49")
      myCol.Add("Golden Delicious Apples", "1.29")
      myCol.Add("Granny Smith Apples", "0.89")
      myCol.Add("Red Delicious Apples", "0.99")

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

      ' Display the contents of the collection using the enumerator.
      Console.WriteLine("Displays the elements using the IDictionaryEnumerator:")
      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 ListDictionary 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,-25} {1}", myArr(i).Key,
 myArr(i).Value)
      Next i
      Console.WriteLine()

      ' Searches for a key.
      If myCol.Contains("Kiwis")
 Then
         Console.WriteLine("The collection contains the key ""Kiwis"".")
      Else
         Console.WriteLine("The collection does not contain the
 key ""Kiwis"".")
      End If
      Console.WriteLine()

      ' Deletes a key.
      myCol.Remove("Plums")
      Console.WriteLine("The collection contains the following
 elements after removing ""Plums"":")
      PrintKeysAndValues(myCol)

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

      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 'PrintKeysAndValues


   ' 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 IDictionary)
      Dim myEnumerator As IDictionaryEnumerator
 = myCol.GetEnumerator()

      Console.WriteLine("   KEY                       VALUE")
      While myEnumerator.MoveNext()
         Console.WriteLine("   {0,-25} {1}", myEnumerator.Key,
 myEnumerator.Value)
      End While
      Console.WriteLine()

   End Sub 'PrintKeysAndValues2


   ' Uses the Keys, Values, Count, and Item properties.
   Public Shared Sub PrintKeysAndValues3(myCol
 As ListDictionary)
      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 'SamplesListDictionary
 


'This code produces the following output.
'Note that because a dictionary is implemented for fast keyed access
 the order
'of the items in the dictionary are not gauranteed and, as a result,
 should not
'be depended on.
'
'Displays the elements using for each:
'   KEY                       VALUE
'   Braeburn Apples           1.49
'   Fuji Apples               1.29
'   Gala Apples               1.49
'   Golden Delicious Apples   1.29
'   Granny Smith Apples       0.89
'   Red Delicious Apples      0.99
'
'Displays the elements using the IDictionaryEnumerator:
'   KEY                       VALUE
'   Braeburn Apples           1.49
'   Fuji Apples               1.29
'   Gala Apples               1.49
'   Golden Delicious Apples   1.29
'   Granny Smith Apples       0.89
'   Red Delicious Apples      0.99
'
'Displays the elements using the Keys, Values, Count, and Item properties:
'   INDEX KEY                       VALUE
'   0     Braeburn Apples           1.49
'   1     Fuji Apples               1.29
'   2     Gala Apples               1.49
'   3     Golden Delicious Apples   1.29
'   4     Granny Smith Apples       0.89
'   5     Red Delicious Apples      0.99
'
'Displays the elements in the array:
'   KEY                       VALUE
'   Braeburn Apples           1.49
'   Fuji Apples               1.29
'   Gala Apples               1.49
'   Golden Delicious Apples   1.29
'   Granny Smith Apples       0.89
'   Red Delicious Apples      0.99
'
'The collection does not contain the key "Kiwis".
'
'The collection contains the following elements after removing "Plums":
'   KEY                       VALUE
'   Braeburn Apples           1.49
'   Fuji Apples               1.29
'   Gala Apples               1.49
'   Golden Delicious Apples   1.29
'   Granny Smith Apples       0.89
'   Red Delicious Apples      0.99
'
'The collection contains the following elements after it is cleared:
'   KEY                       VALUE
'

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

public class SamplesListDictionary  {

   public static void Main()
  {

      // Creates and initializes a new ListDictionary.
      ListDictionary myCol = new ListDictionary();
      myCol.Add( "Braeburn Apples", "1.49" );
      myCol.Add( "Fuji Apples", "1.29" );
      myCol.Add( "Gala Apples", "1.49" );
      myCol.Add( "Golden Delicious Apples", "1.29" );
      myCol.Add( "Granny Smith Apples", "0.89" );
      myCol.Add( "Red Delicious Apples", "0.99" );

      // 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
 IDictionaryEnumerator:" );
      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 ListDictionary 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,-25} {1}", myArr[i].Key, myArr[i].Value
 );
      Console.WriteLine();

      // Searches for a key.
      if ( myCol.Contains( "Kiwis" ) )
         Console.WriteLine( "The collection contains the key \"Kiwis\"."
 );
      else
         Console.WriteLine( "The collection does not contain the key \"Kiwis\"."
 );
      Console.WriteLine();

      // Deletes a key.
      myCol.Remove( "Plums" );
      Console.WriteLine( "The collection contains the following elements after
 removing \"Plums\":" );
      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(
 IDictionary 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(
 IDictionary myCol )  {
      IDictionaryEnumerator myEnumerator = myCol.GetEnumerator();
      Console.WriteLine( "   KEY                       VALUE" );
      while ( myEnumerator.MoveNext() )
         Console.WriteLine( "   {0,-25} {1}", myEnumerator.Key, myEnumerator.Value
 );
      Console.WriteLine();
   }

   // Uses the Keys, Values, Count, and Item properties.
   public static void PrintKeysAndValues3(
 ListDictionary 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 output similar to the following.
Note that because a dictionary is implemented for fast keyed access
 the order
of the items in the dictionary are not gauranteed and, as a result,
 should not
be depended on.

Displays the elements using foreach:
   KEY                       VALUE
   Braeburn Apples           1.49
   Fuji Apples               1.29
   Gala Apples               1.49
   Golden Delicious Apples   1.29
   Granny Smith Apples       0.89
   Red Delicious Apples      0.99

Displays the elements using the IDictionaryEnumerator:
   KEY                       VALUE
   Braeburn Apples           1.49
   Fuji Apples               1.29
   Gala Apples               1.49
   Golden Delicious Apples   1.29
   Granny Smith Apples       0.89
   Red Delicious Apples      0.99

Displays the elements using the Keys, Values, Count, and Item
 properties:
   INDEX KEY                       VALUE
   0     Braeburn Apples           1.49
   1     Fuji Apples               1.29
   2     Gala Apples               1.49
   3     Golden Delicious Apples   1.29
   4     Granny Smith Apples       0.89
   5     Red Delicious Apples      0.99

Displays the elements in the array:
   KEY                       VALUE
   Braeburn Apples           1.49
   Fuji Apples               1.29
   Gala Apples               1.49
   Golden Delicious Apples   1.29
   Granny Smith Apples       0.89
   Red Delicious Apples      0.99

The collection does not contain the key "Kiwis".

The collection contains the following elements after removing "Plums":
   KEY                       VALUE
   Braeburn Apples           1.49
   Fuji Apples               1.29
   Gala Apples               1.49
   Golden Delicious Apples   1.29
   Granny Smith Apples       0.89
   Red Delicious Apples      0.99

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 PrintKeysAndValues1( IDictionary^ myCol );
void PrintKeysAndValues2( IDictionary^ myCol );
void PrintKeysAndValues3( ListDictionary^ myCol );

int main()
{
   // Creates and initializes a new ListDictionary.
   ListDictionary^ myCol = gcnew ListDictionary;
   myCol->Add( "Braeburn Apples", "1.49" );
   myCol->Add( "Fuji Apples", "1.29" );
   myCol->Add( "Gala Apples", "1.49" );
   myCol->Add( "Golden Delicious Apples", "1.29" );
   myCol->Add( "Granny Smith Apples", "0.89" );
   myCol->Add( "Red Delicious Apples", "0.99" );

   // 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 IDictionaryEnumerator:"
 );
   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 ListDictionary 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,-25} {1}", myArr[ i ].Key, myArr[ i ].Value
 );
   Console::WriteLine();

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

   Console::WriteLine();

   // Deletes a key.
   myCol->Remove( "Plums" );
   Console::WriteLine( "The collection contains the following elements after
 removing \"Plums\":" );
   PrintKeysAndValues2( myCol );

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

// 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.
void PrintKeysAndValues1( IDictionary^ myCol )  {
   Console::WriteLine( "   KEY                       VALUE" );
   for each ( DictionaryEntry^ de in myCol
 )
      Console::WriteLine( "   {0,-25} {1}", de->Key, de->Value );
   Console::WriteLine();
}

// Uses the enumerator. 
void PrintKeysAndValues2( IDictionary^ myCol )
{
   IDictionaryEnumerator^ myEnumerator = myCol->GetEnumerator();
   Console::WriteLine( "   KEY                       VALUE" );
   while ( myEnumerator->MoveNext() )
      Console::WriteLine( "   {0,-25} {1}", myEnumerator->Key, myEnumerator->Value
 );
   Console::WriteLine();
}

// Uses the Keys, Values, Count, and Item properties.
void PrintKeysAndValues3( ListDictionary^ 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 for each:
   KEY                       VALUE
   Braeburn Apples           1.49
   Fuji Apples               1.29
   Gala Apples               1.49
   Golden Delicious Apples   1.29
   Granny Smith Apples       0.89
   Red Delicious Apples      0.99

Displays the elements using the IDictionaryEnumerator:
   KEY                       VALUE
   Braeburn Apples           1.49
   Fuji Apples               1.29
   Gala Apples               1.49
   Golden Delicious Apples   1.29
   Granny Smith Apples       0.89
   Red Delicious Apples      0.99

Displays the elements using the Keys, Values, Count, and Item
 properties:
   INDEX KEY                       VALUE
   0     Braeburn Apples           1.49
   1     Fuji Apples               1.29
   2     Gala Apples               1.49
   3     Golden Delicious Apples   1.29
   4     Granny Smith Apples       0.89
   5     Red Delicious Apples      0.99

Displays the elements in the array:
   KEY                       VALUE
   Braeburn Apples           1.49
   Fuji Apples               1.29
   Gala Apples               1.49
   Golden Delicious Apples   1.29
   Granny Smith Apples       0.89
   Red Delicious Apples      0.99

The collection does not contain the key "Kiwis".

The collection contains the following elements after removing "Plums":
   KEY                       VALUE
   Braeburn Apples           1.49
   Fuji Apples               1.29
   Gala Apples               1.49
   Golden Delicious Apples   1.29
   Granny Smith Apples       0.89
   Red Delicious Apples      0.99

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


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

public class SamplesListDictionary
{
    public static void main(String[]
 args)
    {
        // Creates and initializes a new ListDictionary.
        ListDictionary myCol =  new ListDictionary();
        myCol.Add("Braeburn Apples", "1.49");
        myCol.Add("Fuji Apples", "1.29");
        myCol.Add("Gala Apples", "1.49");
        myCol.Add("Golden Delicious Apples", "1.29");
        myCol.Add("Granny Smith Apples", "0.89");
        myCol.Add("Red Delicious Apples", "0.99");

        // Display the contents of the collection using for. This is
 the
        // preferred method.
        Console.WriteLine("Displays the elements using for:");
        PrintKeysAndValues1(myCol);
          
        // Display the contents of the collection using the enumerator.
        Console.WriteLine("Displays the elements using the"
            + " IDictionaryEnumerator:");
        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 ListDictionary 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,-25} {1}", myArr[i].get_Key(), 
                myArr[i].get_Value());
        } 
        Console.WriteLine();
          
        // Searches for a key.
        if (myCol.Contains("Kiwis")) {
            Console.WriteLine("The collection contains the key \"Kiwis\".");
        }
        else {
            Console.WriteLine("The collection does not contain the key"
                + " \"Kiwis\".");
        }
        Console.WriteLine();
          
        // Deletes a key.
        myCol.Remove("Plums");
        Console.WriteLine("The collection contains the following elements"
            + " after removing \"Plums\":");
        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(IDictionary
 myCol) 
    {
        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++) {
            Console.WriteLine("   {0,-25} {1}", strKeys[iCtr],
                myCol.get_Item(strKeys[iCtr]));
        }
        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(IDictionary
 myCol) 
    {
        IDictionaryEnumerator myEnumerator = myCol.GetEnumerator();
        Console.WriteLine("   KEY                       VALUE");
        while(myEnumerator.MoveNext()) {
            Console.WriteLine("   {0,-25} {1}", myEnumerator.get_Key()
,
            myEnumerator.get_Value());
        }
        Console.WriteLine();
    } //PrintKeysAndValues2
   
    // Uses the Keys, Values, Count, and Item properties.
    public static void PrintKeysAndValues3(ListDictionary
 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++) {
            System.Console.WriteLine("   {0,-5} {1,-25} {2}",(Int32)i,
 
                myKeys[i],myCol.get_Item(myKeys[i]));
        } 
        Console.WriteLine();
    } //PrintKeysAndValues3
} //SamplesListDictionary
 
/*
Displays the elements using for:
   KEY                       VALUE
   Braeburn Apples           1.49
   Fuji Apples               1.29
   Gala Apples               1.49
   Golden Delicious Apples   1.29
   Granny Smith Apples       0.89
   Red Delicious Apples      0.99

Displays the elements using the IDictionaryEnumerator:
   KEY                       VALUE
   Braeburn Apples           1.49
   Fuji Apples               1.29
   Gala Apples               1.49
   Golden Delicious Apples   1.29
   Granny Smith Apples       0.89
   Red Delicious Apples      0.99

Displays the elements using the Keys, Values, Count, and Item
 properties:
   INDEX KEY                       VALUE
   0     Braeburn Apples           1.49
   1     Fuji Apples               1.29
   2     Gala Apples               1.49
   3     Golden Delicious Apples   1.29
   4     Granny Smith Apples       0.89
   5     Red Delicious Apples      0.99

Displays the elements in the array:
   KEY                       VALUE
   Braeburn Apples           1.49
   Fuji Apples               1.29
   Gala Apples               1.49
   Golden Delicious Apples   1.29
   Granny Smith Apples       0.89
   Red Delicious Apples      0.99

The collection does not contain the key "Kiwis".

The collection contains the following elements after removing "Plums":
   KEY                       VALUE
   Braeburn Apples           1.49
   Fuji Apples               1.29
   Gala Apples               1.49
   Golden Delicious Apples   1.29
   Granny Smith Apples       0.89
   Red Delicious Apples      0.99

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
ListDictionary クラス
ListDictionary メンバ
System.Collections.Specialized 名前空間
その他の技術情報
カルチャを認識しい文字操作実行

ListDictionary コンストラクタ (IComparer)

指定した比較演算子使用して空の ListDictionary を作成します

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

Public Sub New ( _
    comparer As IComparer _
)
Dim comparer As IComparer

Dim instance As New ListDictionary(comparer)
public ListDictionary (
    IComparer comparer
)
public:
ListDictionary (
    IComparer^ comparer
)
public ListDictionary (
    IComparer comparer
)
public function ListDictionary (
    comparer : IComparer
)

パラメータ

comparer

2 つキー等しかどうか判断するために使用する IComparer。

または

キーの Object.Equals の実装である既定比較演算子使用する場合null 参照 (Visual Basic では Nothing)。

解説解説
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
ListDictionary クラス
ListDictionary メンバ
System.Collections.Specialized 名前空間
IComparer インターフェイス
Object.Equals
その他の技術情報
カルチャを認識しい文字操作実行

ListDictionary コンストラクタ

ListDictionary クラス新しインスタンス初期化します。
オーバーロードの一覧オーバーロードの一覧

名前 説明
ListDictionary () 既定比較演算子使用して空の ListDictionary作成します

.NET Compact Framework によってサポートされています。

ListDictionary (IComparer) 指定した比較演算子使用して空の ListDictionary作成します

.NET Compact Framework によってサポートされています。

参照参照

関連項目

ListDictionary クラス
ListDictionary メンバ
System.Collections.Specialized 名前空間

その他の技術情報

カルチャを認識しい文字操作実行

ListDictionary 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 ListDictionary 内の値を格納している ICollection取得します
参照参照

関連項目

ListDictionary クラス
System.Collections.Specialized 名前空間
IDictionary インターフェイス
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

ListDictionary 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 メソッドプロテクト メソッド
明示的インターフェイスの実装明示的インターフェイス実装
  名前 説明
インターフェイスの明示的な実装 System.Collections.IEnumerable.GetEnumerator ListDictionary反復処理する IEnumerator を返します
参照参照

関連項目

ListDictionary クラス
System.Collections.Specialized 名前空間
IDictionary インターフェイス
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

ListDictionary メンバ

シングルリンク リスト使用して IDictionary実装ます。格納する項目数通常 10 以下であるコレクションに対して推奨されます。

ListDictionary 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
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 ListDictionary 内の値を格納している ICollection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 メソッドプロテクト メソッド
明示的インターフェイスの実装明示的インターフェイス実装
  名前 説明
インターフェイスの明示的な実装 System.Collections.IEnumerable.GetEnumerator ListDictionary反復処理する IEnumerator を返します
参照参照

関連項目

ListDictionary クラス
System.Collections.Specialized 名前空間
IDictionary インターフェイス
Hashtable クラス

その他の技術情報

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