CollectionBase CollectionBase CollectionBase CollectionBase Class

定義

厳密に型指定されたコレクションの abstract 基本クラスを提供します。Provides the abstract base class for a strongly typed collection.

public ref class CollectionBase abstract : System::Collections::IList
[System.Runtime.InteropServices.ComVisible(true)]
[System.Serializable]
public abstract class CollectionBase : System.Collections.IList
type CollectionBase = class
    interface IList
    interface ICollection
    interface IEnumerable
Public MustInherit Class CollectionBase
Implements IList
継承
CollectionBaseCollectionBaseCollectionBaseCollectionBase
派生
属性
実装

CollectionBaseクラスを実装し、その実装を使用してオブジェクトのInt16コレクションを作成するコード例を次に示します。The following code example implements the CollectionBase class and uses that implementation to create a collection of Int16 objects.

#using <System.dll>

using namespace System;
using namespace System::Collections;

public ref class Int16Collection: public CollectionBase
{
public:

   property Int16 Item [int]
   {
      Int16 get( int index )
      {
         return ( (Int16)(List[ index ]));
      }

      void set( int index, Int16 value )
      {
         List[ index ] = value;
      }
   }
   int Add( Int16 value )
   {
      return (List->Add( value ));
   }

   int IndexOf( Int16 value )
   {
      return (List->IndexOf( value ));
   }

   void Insert( int index, Int16 value )
   {
      List->Insert( index, value );
   }

   void Remove( Int16 value )
   {
      List->Remove( value );
   }

   bool Contains( Int16 value )
   {
      // If value is not of type Int16, this will return false.
      return (List->Contains( value ));
   }

protected:
   virtual void OnInsert( int /*index*/, Object^ /*value*/ ) override
   {
      // Insert additional code to be run only when inserting values.
   }

   virtual void OnRemove( int /*index*/, Object^ /*value*/ ) override
   {
      // Insert additional code to be run only when removing values.
   }

   virtual void OnSet( int /*index*/, Object^ /*oldValue*/, Object^ /*newValue*/ ) override
   {
      // Insert additional code to be run only when setting values.
   }

   virtual void OnValidate( Object^ value ) override
   {
      if ( value->GetType() != Type::GetType( "System.Int16" ) )
            throw gcnew ArgumentException( "value must be of type Int16.","value" );
   }

};

void PrintIndexAndValues( Int16Collection^ myCol );
void PrintValues2( Int16Collection^ myCol );
int main()
{
   // Create and initialize a new CollectionBase.
   Int16Collection^ myI16 = gcnew Int16Collection;
   
   // Add elements to the collection.
   myI16->Add( (Int16)1 );
   myI16->Add( (Int16)2 );
   myI16->Add( (Int16)3 );
   myI16->Add( (Int16)5 );
   myI16->Add( (Int16)7 );

   // Display the contents of the collection using the enumerator.
   Console::WriteLine( "Contents of the collection (using enumerator):" );
   PrintValues2( myI16 );

   // Display the contents of the collection using the Count property and the Item property.
   Console::WriteLine( "Initial contents of the collection (using Count and Item):" );
   PrintIndexAndValues( myI16 );

   // Search the collection with Contains and IndexOf.
   Console::WriteLine( "Contains 3: {0}", myI16->Contains( 3 ) );
   Console::WriteLine( "2 is at index {0}.", myI16->IndexOf( 2 ) );
   Console::WriteLine();

   // Insert an element into the collection at index 3.
   myI16->Insert( 3, (Int16)13 );
   Console::WriteLine( "Contents of the collection after inserting at index 3:" );
   PrintIndexAndValues( myI16 );

   // Get and set an element using the index.
   myI16->Item[ 4 ] = 123;
   Console::WriteLine( "Contents of the collection after setting the element at index 4 to 123:" );
   PrintIndexAndValues( myI16 );

   // Remove an element from the collection.
   myI16->Remove( (Int16)2 );

   // Display the contents of the collection using the Count property and the Item property.
   Console::WriteLine( "Contents of the collection after removing the element 2:" );
   PrintIndexAndValues( myI16 );
}

// Uses the Count property and the Item property.
void PrintIndexAndValues( Int16Collection^ myCol )
{
   for ( int i = 0; i < myCol->Count; i++ )
      Console::WriteLine( "   [{0}]:   {1}", i, myCol->Item[ i ] );
   Console::WriteLine();
}

// Uses the enumerator. 
void PrintValues2( Int16Collection^ myCol )
{
   System::Collections::IEnumerator^ myEnumerator = myCol->GetEnumerator();
   while ( myEnumerator->MoveNext() )
      Console::WriteLine( "   {0}", myEnumerator->Current );

   Console::WriteLine();
}

/* 
This code produces the following output.

Contents of the collection (using enumerator):
   1
   2
   3
   5
   7

Initial contents of the collection (using Count and Item):
   [0]:   1
   [1]:   2
   [2]:   3
   [3]:   5
   [4]:   7

Contains 3: True
2 is at index 1.

Contents of the collection after inserting at index 3:
   [0]:   1
   [1]:   2
   [2]:   3
   [3]:   13
   [4]:   5
   [5]:   7

Contents of the collection after setting the element at index 4 to 123:
   [0]:   1
   [1]:   2
   [2]:   3
   [3]:   13
   [4]:   123
   [5]:   7

Contents of the collection after removing the element 2:
   [0]:   1
   [1]:   3
   [2]:   13
   [3]:   123
   [4]:   7

*/
using System;
using System.Collections;

public class Int16Collection : CollectionBase  {

   public Int16 this[ int index ]  {
      get  {
         return( (Int16) List[index] );
      }
      set  {
         List[index] = value;
      }
   }

   public int Add( Int16 value )  {
      return( List.Add( value ) );
   }

   public int IndexOf( Int16 value )  {
      return( List.IndexOf( value ) );
   }

   public void Insert( int index, Int16 value )  {
      List.Insert( index, value );
   }

   public void Remove( Int16 value )  {
      List.Remove( value );
   }

   public bool Contains( Int16 value )  {
      // If value is not of type Int16, this will return false.
      return( List.Contains( value ) );
   }

   protected override void OnInsert( int index, Object value )  {
      // Insert additional code to be run only when inserting values.
   }

   protected override void OnRemove( int index, Object value )  {
      // Insert additional code to be run only when removing values.
   }

   protected override void OnSet( int index, Object oldValue, Object newValue )  {
      // Insert additional code to be run only when setting values.
   }

   protected override void OnValidate( Object value )  {
      if ( value.GetType() != typeof(System.Int16) )
         throw new ArgumentException( "value must be of type Int16.", "value" );
   }

}


public class SamplesCollectionBase  {

   public static void Main()  {
 
      // Create and initialize a new CollectionBase.
      Int16Collection myI16 = new Int16Collection();

      // Add elements to the collection.
      myI16.Add( (Int16) 1 );
      myI16.Add( (Int16) 2 );
      myI16.Add( (Int16) 3 );
      myI16.Add( (Int16) 5 );
      myI16.Add( (Int16) 7 );

      // Display the contents of the collection using foreach. This is the preferred method.
      Console.WriteLine( "Contents of the collection (using foreach):" );
      PrintValues1( myI16 );

      // Display the contents of the collection using the enumerator.
      Console.WriteLine( "Contents of the collection (using enumerator):" );
      PrintValues2( myI16 );

      // Display the contents of the collection using the Count property and the Item property.
      Console.WriteLine( "Initial contents of the collection (using Count and Item):" );
      PrintIndexAndValues( myI16 );

      // Search the collection with Contains and IndexOf.
      Console.WriteLine( "Contains 3: {0}", myI16.Contains( 3 ) );
      Console.WriteLine( "2 is at index {0}.", myI16.IndexOf( 2 ) );
      Console.WriteLine();

      // Insert an element into the collection at index 3.
      myI16.Insert( 3, (Int16) 13 );
      Console.WriteLine( "Contents of the collection after inserting at index 3:" );
      PrintIndexAndValues( myI16 );

      // Get and set an element using the index.
      myI16[4] = 123;
      Console.WriteLine( "Contents of the collection after setting the element at index 4 to 123:" );
      PrintIndexAndValues( myI16 );

      // Remove an element from the collection.
      myI16.Remove( (Int16) 2 );

      // Display the contents of the collection using the Count property and the Item property.
      Console.WriteLine( "Contents of the collection after removing the element 2:" );
      PrintIndexAndValues( myI16 );

   }
 
   // Uses the Count property and the Item property.
   public static void PrintIndexAndValues( Int16Collection myCol )  {
      for ( int i = 0; i < myCol.Count; i++ )
         Console.WriteLine( "   [{0}]:   {1}", i, myCol[i] );
      Console.WriteLine();
   }

   // 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 PrintValues1( Int16Collection myCol )  {
      foreach ( Int16 i16 in myCol )
         Console.WriteLine( "   {0}", i16 );
      Console.WriteLine();
   }

   // Uses the enumerator. 
   // NOTE: The foreach statement is the preferred way of enumerating the contents of a collection.
   public static void PrintValues2( Int16Collection myCol )  {
      System.Collections.IEnumerator myEnumerator = myCol.GetEnumerator();
      while ( myEnumerator.MoveNext() )
         Console.WriteLine( "   {0}", myEnumerator.Current );
      Console.WriteLine();
   }
}


/* 
This code produces the following output.

Contents of the collection (using foreach):
   1
   2
   3
   5
   7

Contents of the collection (using enumerator):
   1
   2
   3
   5
   7

Initial contents of the collection (using Count and Item):
   [0]:   1
   [1]:   2
   [2]:   3
   [3]:   5
   [4]:   7

Contains 3: True
2 is at index 1.

Contents of the collection after inserting at index 3:
   [0]:   1
   [1]:   2
   [2]:   3
   [3]:   13
   [4]:   5
   [5]:   7

Contents of the collection after setting the element at index 4 to 123:
   [0]:   1
   [1]:   2
   [2]:   3
   [3]:   13
   [4]:   123
   [5]:   7

Contents of the collection after removing the element 2:
   [0]:   1
   [1]:   3
   [2]:   13
   [3]:   123
   [4]:   7

*/

Imports System.Collections


Public Class Int16Collection
   Inherits CollectionBase


   Default Public Property Item(index As Integer) As Int16
      Get
         Return CType(List(index), Int16)
      End Get
      Set
         List(index) = value
      End Set
   End Property


   Public Function Add(value As Int16) As Integer
      Return List.Add(value)
   End Function 'Add

   Public Function IndexOf(value As Int16) As Integer
      Return List.IndexOf(value)
   End Function 'IndexOf


   Public Sub Insert(index As Integer, value As Int16)
      List.Insert(index, value)
   End Sub


   Public Sub Remove(value As Int16)
      List.Remove(value)
   End Sub


   Public Function Contains(value As Int16) As Boolean
      ' If value is not of type Int16, this will return false.
      Return List.Contains(value)
   End Function 'Contains


   Protected Overrides Sub OnInsert(index As Integer, value As Object)
      ' Insert additional code to be run only when inserting values.
   End Sub


   Protected Overrides Sub OnRemove(index As Integer, value As Object)
      ' Insert additional code to be run only when removing values.
   End Sub


   Protected Overrides Sub OnSet(index As Integer, oldValue As Object, newValue As Object)
      ' Insert additional code to be run only when setting values.
   End Sub


   Protected Overrides Sub OnValidate(value As Object)
      If Not GetType(System.Int16).IsAssignableFrom(value.GetType()) Then
         Throw New ArgumentException("value must be of type Int16.", "value")
      End If
   End Sub

End Class


Public Class SamplesCollectionBase

   Public Shared Sub Main()

      ' Creates and initializes a new CollectionBase.
      Dim myI16 As New Int16Collection()

      ' Adds elements to the collection.
      myI16.Add( 1 )
      myI16.Add( 2 )
      myI16.Add( 3 )
      myI16.Add( 5 )
      myI16.Add( 7 )

      ' Display the contents of the collection using For Each. This is the preferred method.
      Console.WriteLine("Contents of the collection (using For Each):")
      PrintValues1(myI16)
      
      ' Display the contents of the collection using the enumerator.
      Console.WriteLine("Contents of the collection (using enumerator):")
      PrintValues2(myI16)
      
      ' Display the contents of the collection using the Count property and the Item property.
      Console.WriteLine("Initial contents of the collection (using Count and Item):")
      PrintIndexAndValues(myI16)
      
      ' Searches the collection with Contains and IndexOf.
      Console.WriteLine("Contains 3: {0}", myI16.Contains(3))
      Console.WriteLine("2 is at index {0}.", myI16.IndexOf(2))
      Console.WriteLine()
      
      ' Inserts an element into the collection at index 3.
      myI16.Insert(3, 13)
      Console.WriteLine("Contents of the collection after inserting at index 3:")
      PrintIndexAndValues(myI16)
      
      ' Gets and sets an element using the index.
      myI16(4) = 123
      Console.WriteLine("Contents of the collection after setting the element at index 4 to 123:")
      PrintIndexAndValues(myI16)
      
      ' Removes an element from the collection.
      myI16.Remove(2)

      ' Display the contents of the collection using the Count property and the Item property.
      Console.WriteLine("Contents of the collection after removing the element 2:")
      PrintIndexAndValues(myI16)

    End Sub


    ' Uses the Count property and the Item property.
    Public Shared Sub PrintIndexAndValues(myCol As Int16Collection)
      Dim i As Integer
      For i = 0 To myCol.Count - 1
          Console.WriteLine("   [{0}]:   {1}", i, myCol(i))
      Next i
      Console.WriteLine()
    End Sub


    ' 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 PrintValues1(myCol As Int16Collection)
      Dim i16 As Int16
      For Each i16 In  myCol
          Console.WriteLine("   {0}", i16)
      Next i16
      Console.WriteLine()
    End Sub


    ' Uses the enumerator. 
    ' NOTE: The For Each statement is the preferred way of enumerating the contents of a collection.
    Public Shared Sub PrintValues2(myCol As Int16Collection)
      Dim myEnumerator As System.Collections.IEnumerator = myCol.GetEnumerator()
      While myEnumerator.MoveNext()
          Console.WriteLine("   {0}", myEnumerator.Current)
      End While
      Console.WriteLine()
    End Sub

End Class


'This code produces the following output.
'
'Contents of the collection (using For Each):
'   1
'   2
'   3
'   5
'   7
'
'Contents of the collection (using enumerator):
'   1
'   2
'   3
'   5
'   7
'
'Initial contents of the collection (using Count and Item):
'   [0]:   1
'   [1]:   2
'   [2]:   3
'   [3]:   5
'   [4]:   7
'
'Contains 3: True
'2 is at index 1.
'
'Contents of the collection after inserting at index 3:
'   [0]:   1
'   [1]:   2
'   [2]:   3
'   [3]:   13
'   [4]:   5
'   [5]:   7
'
'Contents of the collection after setting the element at index 4 to 123:
'   [0]:   1
'   [1]:   2
'   [2]:   3
'   [3]:   13
'   [4]:   123
'   [5]:   7
'
'Contents of the collection after removing the element 2:
'   [0]:   1
'   [1]:   3
'   [2]:   13
'   [3]:   123
'   [4]:   7

注釈

重要

新しい開発にはCollectionBaseクラスを使用しないことをお勧めします。We don't recommend that you use the CollectionBase class for new development. 代わりに、ジェネリックCollection<T>クラスを使用することをお勧めします。Instead, we recommend that you use the generic Collection<T> class. 詳細については、「GitHub で非ジェネリックコレクションを使用することはできません。」を参照してください。For more information, see Non-generic collections shouldn't be used on GitHub.

CollectionBaseインスタンスは常に変更可能です。A CollectionBase instance is always modifiable. このReadOnlyCollectionBaseクラスの読み取り専用バージョンについては、「」を参照してください。See ReadOnlyCollectionBase for a read-only version of this class.

CollectionBaseの容量は、CollectionBaseが保持できる要素の数です。The capacity of a CollectionBase is the number of elements the CollectionBase can hold. 要素がにCollectionBase追加されると、再割り当てによって必要に応じて容量が自動的に増加します。As elements are added to a CollectionBase, the capacity is automatically increased as required through reallocation. 容量は、プロパティをCapacity明示的に設定することによって減らすことができます。The capacity can be decreased by setting the Capacity property explicitly.

注意 (継承者)

この基底クラスは、実装者が厳密に型指定されたカスタムコレクションを簡単に作成できるようにするために用意されています。This base class is provided to make it easier for implementers to create a strongly typed custom collection. 実装者は、独自の基底クラスを作成するのではなく、この基本クラスを拡張することをお勧めします。Implementers are encouraged to extend this base class instead of creating their own.

コンストラクター

CollectionBase() CollectionBase() CollectionBase() CollectionBase()

既定の初期量を使用して、CollectionBase クラスの新しいインスタンスを初期化します。Initializes a new instance of the CollectionBase class with the default initial capacity.

CollectionBase(Int32) CollectionBase(Int32) CollectionBase(Int32) CollectionBase(Int32)

容量を指定して、CollectionBase クラスの新しいインスタンスを初期化します。Initializes a new instance of the CollectionBase class with the specified capacity.

プロパティ

Capacity Capacity Capacity Capacity

CollectionBase に格納できる要素の数を取得または設定します。Gets or sets the number of elements that the CollectionBase can contain.

Count Count Count Count

CollectionBase インスタンスに格納されている要素の数を取得します。Gets the number of elements contained in the CollectionBase instance. このプロパティはオーバーライドできません。This property cannot be overridden.

InnerList InnerList InnerList InnerList

ArrayList インスタンス内の要素のリストを格納する CollectionBase を取得します。Gets an ArrayList containing the list of elements in the CollectionBase instance.

List List List List

IList インスタンス内の要素のリストを格納する CollectionBase を取得します。Gets an IList containing the list of elements in the CollectionBase instance.

メソッド

Clear() Clear() Clear() Clear()

CollectionBase インスタンスからすべてのオブジェクトを削除します。Removes all objects from the CollectionBase instance. このメソッドはオーバーライドできません。This method cannot be overridden.

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

指定したオブジェクトが、現在のオブジェクトと等しいかどうかを判断します。Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetEnumerator() GetEnumerator() GetEnumerator() GetEnumerator()

CollectionBase インスタンスを反復処理する列挙子を返します。Returns an enumerator that iterates through the CollectionBase instance.

GetHashCode() GetHashCode() GetHashCode() GetHashCode()

既定のハッシュ関数として機能します。Serves as the default hash function.

(Inherited from Object)
GetType() GetType() GetType() GetType()

現在のインスタンスの Type を取得します。Gets the Type of the current instance.

(Inherited from Object)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

現在の Object の簡易コピーを作成します。Creates a shallow copy of the current Object.

(Inherited from Object)
OnClear() OnClear() OnClear() OnClear()

CollectionBase インスタンスの内容を消去しているときに、追加のカスタム プロセスを実行します。Performs additional custom processes when clearing the contents of the CollectionBase instance.

OnClearComplete() OnClearComplete() OnClearComplete() OnClearComplete()

CollectionBase インスタンスの内容を消去した後に、追加のカスタム プロセスを実行します。Performs additional custom processes after clearing the contents of the CollectionBase instance.

OnInsert(Int32, Object) OnInsert(Int32, Object) OnInsert(Int32, Object) OnInsert(Int32, Object)

CollectionBase インスタンスに新しい要素を挿入する前に、追加のカスタム プロセスを実行します。Performs additional custom processes before inserting a new element into the CollectionBase instance.

OnInsertComplete(Int32, Object) OnInsertComplete(Int32, Object) OnInsertComplete(Int32, Object) OnInsertComplete(Int32, Object)

CollectionBase インスタンスに新しい要素を挿入した後に、追加のカスタム プロセスを実行します。Performs additional custom processes after inserting a new element into the CollectionBase instance.

OnRemove(Int32, Object) OnRemove(Int32, Object) OnRemove(Int32, Object) OnRemove(Int32, Object)

CollectionBase インスタンスから要素を削除するときに、追加のカスタム プロセスを実行します。Performs additional custom processes when removing an element from the CollectionBase instance.

OnRemoveComplete(Int32, Object) OnRemoveComplete(Int32, Object) OnRemoveComplete(Int32, Object) OnRemoveComplete(Int32, Object)

CollectionBase インスタンスから要素を削除した後に、追加のカスタム プロセスを実行します。Performs additional custom processes after removing an element from the CollectionBase instance.

OnSet(Int32, Object, Object) OnSet(Int32, Object, Object) OnSet(Int32, Object, Object) OnSet(Int32, Object, Object)

CollectionBase インスタンスに値を設定する前に、追加のカスタム プロセスを実行します。Performs additional custom processes before setting a value in the CollectionBase instance.

OnSetComplete(Int32, Object, Object) OnSetComplete(Int32, Object, Object) OnSetComplete(Int32, Object, Object) OnSetComplete(Int32, Object, Object)

CollectionBase インスタンスに値を設定した後に、追加のカスタム プロセスを実行します。Performs additional custom processes after setting a value in the CollectionBase instance.

OnValidate(Object) OnValidate(Object) OnValidate(Object) OnValidate(Object)

値を検証するときに、追加のカスタム プロセスを実行します。Performs additional custom processes when validating a value.

RemoveAt(Int32) RemoveAt(Int32) RemoveAt(Int32) RemoveAt(Int32)

CollectionBase インスタンスの指定したインデックスにある要素を削除します。Removes the element at the specified index of the CollectionBase instance. このメソッドはオーバーライドできません。This method is not overridable.

ToString() ToString() ToString() ToString()

現在のオブジェクトを表す文字列を返します。Returns a string that represents the current object.

(Inherited from Object)

明示的なインターフェイスの実装

ICollection.CopyTo(Array, Int32) ICollection.CopyTo(Array, Int32) ICollection.CopyTo(Array, Int32) ICollection.CopyTo(Array, Int32)

CollectionBase 全体を、互換性のある 1 次元の Array にコピーします。コピー操作は、コピー先の配列の指定したインデックスから始まる部分に行います。Copies the entire CollectionBase to a compatible one-dimensional Array, starting at the specified index of the target array.

ICollection.IsSynchronized ICollection.IsSynchronized ICollection.IsSynchronized ICollection.IsSynchronized

CollectionBase へのアクセスが同期されている (スレッド セーフである) かどうかを示す値を取得します。Gets a value indicating whether access to the CollectionBase is synchronized (thread safe).

ICollection.SyncRoot ICollection.SyncRoot ICollection.SyncRoot ICollection.SyncRoot

CollectionBase へのアクセスを同期するために使用できるオブジェクトを取得します。Gets an object that can be used to synchronize access to the CollectionBase.

IList.Add(Object) IList.Add(Object) IList.Add(Object) IList.Add(Object)

CollectionBase の末尾にオブジェクトを追加します。Adds an object to the end of the CollectionBase.

IList.Contains(Object) IList.Contains(Object) IList.Contains(Object) IList.Contains(Object)

CollectionBase に特定の要素が格納されているかどうかを判断します。Determines whether the CollectionBase contains a specific element.

IList.IndexOf(Object) IList.IndexOf(Object) IList.IndexOf(Object) IList.IndexOf(Object)

指定した Object を検索し、CollectionBase 全体内で最初に見つかった位置の 0 から始まるインデックスを返します。Searches for the specified Object and returns the zero-based index of the first occurrence within the entire CollectionBase.

IList.Insert(Int32, Object) IList.Insert(Int32, Object) IList.Insert(Int32, Object) IList.Insert(Int32, Object)

CollectionBase 内の指定したインデックスの位置に要素を挿入します。Inserts an element into the CollectionBase at the specified index.

IList.IsFixedSize IList.IsFixedSize IList.IsFixedSize IList.IsFixedSize

CollectionBase が固定サイズかどうかを示す値を取得します。Gets a value indicating whether the CollectionBase has a fixed size.

IList.IsReadOnly IList.IsReadOnly IList.IsReadOnly IList.IsReadOnly

CollectionBase が読み取り専用かどうかを示す値を取得します。Gets a value indicating whether the CollectionBase is read-only.

IList.Item[Int32] IList.Item[Int32] IList.Item[Int32] IList.Item[Int32]

指定したインデックスにある要素を取得または設定します。Gets or sets the element at the specified index.

IList.Remove(Object) IList.Remove(Object) IList.Remove(Object) IList.Remove(Object)

特定のオブジェクトが CollectionBase 内にあるときに、最初に出現したものを削除します。Removes the first occurrence of a specific object from the CollectionBase.

拡張メソッド

Cast<TResult>(IEnumerable) Cast<TResult>(IEnumerable) Cast<TResult>(IEnumerable) Cast<TResult>(IEnumerable)

IEnumerable の要素を、指定した型にキャストします。Casts the elements of an IEnumerable to the specified type.

OfType<TResult>(IEnumerable) OfType<TResult>(IEnumerable) OfType<TResult>(IEnumerable) OfType<TResult>(IEnumerable)

指定された型に基づいて IEnumerable の要素をフィルター処理します。Filters the elements of an IEnumerable based on a specified type.

AsParallel(IEnumerable) AsParallel(IEnumerable) AsParallel(IEnumerable) AsParallel(IEnumerable)

クエリの並列化を有効にします。Enables parallelization of a query.

AsQueryable(IEnumerable) AsQueryable(IEnumerable) AsQueryable(IEnumerable) AsQueryable(IEnumerable)

IEnumerableIQueryable に変換します。Converts an IEnumerable to an IQueryable.

適用対象

スレッド セーフ

パブリック静的 (Visual Basic ではShared) なこの型のメンバーはスレッド セーフですPublic static (Shared in Visual Basic) members of this type are thread safe. インスタンス メンバーの場合は、スレッド セーフであるとは限りません。Any instance members are not guaranteed to be thread safe.

この実装は、 CollectionBaseに対して同期された (スレッドセーフな) ラッパーを提供しませんが、派生クラスはSyncRootプロパティを使用して、 CollectionBase独自の同期バージョンを作成できます。This implementation does not provide a synchronized (thread safe) wrapper for a CollectionBase, but derived classes can create their own synchronized versions of the CollectionBase using the SyncRoot property.

コレクションの列挙は、本質的にスレッド セーフな手続きではありません。Enumerating through a collection is intrinsically not a thread safe procedure. コレクションの同期がとられている場合でも、別のスレッドによってそのコレクションを変更できるため、変更の結果として列挙子は例外をスローします。Even when a collection is synchronized, other threads can still modify the collection, which causes the enumerator to throw an exception. 列挙処理を確実にスレッド セーフに行うには、列挙中にコレクションをロックするか、他のスレッドによって行われた変更によってスローされる例外をキャッチします。To guarantee thread safety during enumeration, you can either lock the collection during the entire enumeration or catch the exceptions resulting from changes made by other threads.

こちらもご覧ください