ComponentCollection ComponentCollection ComponentCollection ComponentCollection Class

定義

IComponent オブジェクトのコレクション用の読み取り専用コンテナーを提供します。Provides a read-only container for a collection of IComponent objects.

public ref class ComponentCollection : System::Collections::ReadOnlyCollectionBase
[System.Runtime.InteropServices.ComVisible(true)]
public class ComponentCollection : System.Collections.ReadOnlyCollectionBase
type ComponentCollection = class
    inherit ReadOnlyCollectionBase
Public Class ComponentCollection
Inherits ReadOnlyCollectionBase
継承
ComponentCollectionComponentCollectionComponentCollectionComponentCollection
属性

次のコード例は、 ComponentCollectionを使用してカスタムBookComponentオブジェクトのコレクションを列挙する方法を示しています。The following code example demonstrates how to use a ComponentCollection to enumerate a collection of custom BookComponent objects.

//This code segment implements the IContainer interface.  The code segment 
//containing the implementation of ISite and IComponent can be found in the documentation
//for those interfaces.

//Implement the LibraryContainer using the IContainer interface.

class LibraryContainer : IContainer
{
	private ArrayList m_bookList;

	public LibraryContainer()
	{
		m_bookList = new ArrayList();
	}

	public virtual void Add(IComponent book)
	{
		//The book will be added without creation of the ISite object.
		m_bookList.Add(book);
	}

	public virtual void Add(IComponent book, string ISNDNNum)
	{
		for(int i =0; i < m_bookList.Count; ++i)
		{
			IComponent curObj = (IComponent)m_bookList[i];
			if(curObj.Site != null)
			{
				if(curObj.Site.Name.Equals(ISNDNNum))
					throw new ArgumentException("The ISBN number already exists in the container"); 
			}
		}

		ISBNSite data = new ISBNSite(this, book);
		data.Name = ISNDNNum;
		book.Site = data;
		m_bookList.Add(book);
	}

	public virtual void Remove(IComponent book)
	{
		for(int i =0; i < m_bookList.Count; ++i)
		{				
			if(book.Equals(m_bookList[i]))
			{
				m_bookList.RemoveAt(i);
					break;
			}
		}
	}

	public ComponentCollection Components
	{
		get
		{
			IComponent[] datalist = new BookComponent[m_bookList.Count];
			m_bookList.CopyTo(datalist);
			return new ComponentCollection(datalist);
		}
	}

	public virtual void Dispose()
	{	
		for(int i =0; i < m_bookList.Count; ++i)
		{
			IComponent curObj = (IComponent)m_bookList[i];
			curObj.Dispose();
		}
		
		m_bookList.Clear();
	}

	static void Main(string[] args)
	{
		LibraryContainer cntrExmpl = new LibraryContainer();

		try 
		{
			BookComponent book1 = new BookComponent("Wizard's First Rule", "Terry Gooodkind");
			cntrExmpl.Add(book1, "0812548051");
			BookComponent book2 = new BookComponent("Stone of Tears", "Terry Gooodkind");
			cntrExmpl.Add(book2, "0812548094");
			BookComponent book3 = new BookComponent("Blood of the Fold", "Terry Gooodkind");
			cntrExmpl.Add(book3, "0812551478");
			BookComponent book4 = new BookComponent("The Soul of the Fire", "Terry Gooodkind");
			//This will generate exception because the ISBN already exists in the container.
			cntrExmpl.Add(book4, "0812551478");
		}
		catch (ArgumentException e)
		{
			Console.WriteLine("Unable to add books: " + e.Message);
		}

		ComponentCollection datalist =cntrExmpl.Components;
		IEnumerator denum = datalist.GetEnumerator();

		while(denum.MoveNext())
		{
			BookComponent cmp = (BookComponent)denum.Current;
			Console.WriteLine("Book Title: " + cmp.Title);
			Console.WriteLine("Book Author: " + cmp.Author);
			Console.WriteLine("Book ISBN: " + cmp.Site.Name);
		}
	}
}
	'This code segment implements the IContainer interface.  The code segment 
	'containing the implementation of ISite and IComponent can be found in the documentation
	'for those interfaces.
	
	'Implement the LibraryContainer using the IContainer interface.

Class LibraryContainer
    Implements IContainer
    Private m_bookList As ArrayList

    Public Sub New()
        m_bookList = New ArrayList()
    End Sub

    Public Sub Add(ByVal book As IComponent) Implements IContainer.Add
        'The book will be added without creation of the ISite object.
        m_bookList.Add(book)
    End Sub

    Public Sub Add(ByVal book As IComponent, ByVal ISNDNNum As String) Implements IContainer.Add

        Dim i As Integer
        Dim curObj As IComponent

        For i = 0 To m_bookList.Count - 1
            curObj = CType(m_bookList(i), IComponent)
            If curObj.Site IsNot Nothing Then
                If (curObj.Site.Name.Equals(ISNDNNum)) Then
                    Throw New ArgumentException("The ISBN number already exists in the container")
                End If
            End If
        Next i

        Dim data As ISBNSite = New ISBNSite(Me, book)
        data.Name = ISNDNNum
        book.Site = data
        m_bookList.Add(book)

    End Sub

    Public Sub Remove(ByVal book As IComponent) Implements IContainer.Remove
        Dim i As Integer
        Dim curComp As BookComponent = CType(book, BookComponent)

        For i = 0 To m_bookList.Count - 1
            If (curComp.Equals(m_bookList(i)) = True) Then
                m_bookList.RemoveAt(i)
                Exit For
            End If
        Next i
    End Sub


    Public ReadOnly Property Components() As ComponentCollection Implements IContainer.Components
        Get
            Dim datalist(m_bookList.Count - 1) As IComponent
            
            m_bookList.CopyTo(datalist)
            Return New ComponentCollection(datalist)
        End Get
    End Property

    Public Overridable Sub Dispose() Implements IDisposable.Dispose
        Dim i As Integer
        For i = 0 To m_bookList.Count - 1
            Dim curObj As IComponent = CType(m_bookList(i), IComponent)
            curObj.Dispose()
        Next i

        m_bookList.Clear()
    End Sub

    Public Shared Sub Main()
        Dim cntrExmpl As LibraryContainer = New LibraryContainer()

        Try
            Dim book1 As BookComponent = New BookComponent("Wizard's First Rule", "Terry Gooodkind")
            cntrExmpl.Add(book1, "0812548051")
            Dim book2 As BookComponent = New BookComponent("Stone of Tears", "Terry Gooodkind")
            cntrExmpl.Add(book2, "0812548094")
            Dim book3 As BookComponent = New BookComponent("Blood of the Fold", "Terry Gooodkind")
            cntrExmpl.Add(book3, "0812551478")
            Dim book4 As BookComponent = New BookComponent("The Soul of the Fire", "Terry Gooodkind")
            'This will generate an exception, because the ISBN already exists in the container.
            cntrExmpl.Add(book4, "0812551478")
        Catch e As ArgumentException
            Console.WriteLine("Unable to add books: " + e.Message)
        End Try

        Dim datalist As ComponentCollection = cntrExmpl.Components
        Dim denum As IEnumerator = datalist.GetEnumerator()

        While (denum.MoveNext())
            Dim cmp As BookComponent = CType(denum.Current, BookComponent)
            Console.WriteLine("Book Title: " + cmp.Title)
            Console.WriteLine("Book Author: " + cmp.Author)
            Console.WriteLine("Book ISBN: " + cmp.Site.Name)
        End While
    End Sub
End Class

注釈

このコレクションは、 ReadOnlyCollectionBaseから継承します。This collection inherits from ReadOnlyCollectionBase. このコレクションにオブジェクトをIComponent追加する唯一の方法は、クラスコンストラクターを使用することです。The only way to add IComponent objects to this collection is to use the class constructor.

このコレクションには、2つのインデクサープロパティ (文字列インデクサーと整数インデクサー) が用意されています。This collection provides two indexer properties, a string indexer and an integer indexer. コレクション内のコンポーネントのプロパティSiteがではなくnull Name 、コンポーネントのプロパティのSiteプロパティが指定したと一致する場合、string インデクサープロパティは、コレクション内のコンポーネントを名前で返します。文字列.The string indexer property returns a component in the collection by name if the Site property of a component in the collection is not null and the Name property of the Site property of the component matches the specified string. 整数インデクサープロパティは、指定IComponentされたコレクションインデックス位置にあるを返します。The integer indexer property returns the IComponent at the specified collection index. メソッドCopyToは、指定したインデックス位置にある配列への書き込みを開始位置として、指定した配列にコレクションの内容をコピーします。The CopyTo method copies the contents of the collection to a specified array, beginning writing to the array at the specified index.

コンストラクター

ComponentCollection(IComponent[]) ComponentCollection(IComponent[]) ComponentCollection(IComponent[]) ComponentCollection(IComponent[])

指定したコンポーネントの配列を使用して、ComponentCollection 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 ComponentCollection class using the specified array of components.

プロパティ

Count Count Count Count

ReadOnlyCollectionBase 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 ReadOnlyCollectionBase instance.

(Inherited from ReadOnlyCollectionBase)
ICollection.IsSynchronized ICollection.IsSynchronized ICollection.IsSynchronized ICollection.IsSynchronized

ReadOnlyCollectionBase オブジェクト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 a ReadOnlyCollectionBase object is synchronized (thread safe).

(Inherited from ReadOnlyCollectionBase)
ICollection.SyncRoot ICollection.SyncRoot ICollection.SyncRoot ICollection.SyncRoot

ReadOnlyCollectionBase オブジェクト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 a ReadOnlyCollectionBase object.

(Inherited from ReadOnlyCollectionBase)
InnerList InnerList InnerList InnerList

ReadOnlyCollectionBase インスタンスに格納されている要素のリストを取得します。Gets the list of elements contained in the ReadOnlyCollectionBase instance.

(Inherited from ReadOnlyCollectionBase)
Item[Int32] Item[Int32] Item[Int32] Item[Int32]

コレクション内の指定したインデックス位置の Component を取得します。Gets the Component in the collection at the specified collection index.

Item[String] Item[String] Item[String] Item[String]

指定した名前と一致するコンポーネントをコレクションから取得します。Gets any component in the collection matching the specified name.

メソッド

CopyTo(IComponent[], Int32) CopyTo(IComponent[], Int32) CopyTo(IComponent[], Int32) CopyTo(IComponent[], Int32)

指定した配列インデックスを開始位置として、配列にコレクション全体をコピーします。Copies the entire collection to an array, starting writing at the specified array index.

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()

ReadOnlyCollectionBase 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 ReadOnlyCollectionBase instance.

(Inherited from ReadOnlyCollectionBase)
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)
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)

ReadOnlyCollectionBase 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 ReadOnlyCollectionBase to a compatible one-dimensional Array, starting at the specified index of the target array.

(Inherited from ReadOnlyCollectionBase)

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

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