CollectionBase 클래스

CollectionBase 클래스

업데이트: 2007년 11월

강력한 형식의 컬렉션에 대한 abstract 기본 클래스를 제공합니다.

네임스페이스:  System.Collections
어셈블리:  mscorlib(mscorlib.dll)

[SerializableAttribute]
[ComVisibleAttribute(true)]
public abstract class CollectionBase : IList, 
	ICollection, IEnumerable
/** @attribute SerializableAttribute */ 
/** @attribute ComVisibleAttribute(true) */
public abstract class CollectionBase implements IList, 
	ICollection, IEnumerable
public abstract class CollectionBase implements IList, ICollection, IEnumerable

CollectionBase 인스턴스는 항상 수정할 수 있습니다. 이 클래스의 읽기 전용 버전을 보려면 ReadOnlyCollectionBase를 참조하십시오.

CollectionBase의 용량은 CollectionBase가 보유할 수 있는 요소의 수입니다. 요소가 CollectionBase에 추가될 때 필요하면 재할당을 통해 용량이 자동으로 증가됩니다. 용량은 Capacity 속성을 명시적으로 설정하여 줄일 수 있습니다.

구현자 참고 사항:

이 기본 클래스를 사용하면 강력한 형식의 사용자 지정 컬렉션을 쉽게 만들 수 있습니다. 구현자는 고유 클래스를 만드는 대신 이 기본 클래스를 확장하는 것이 좋습니다.

다음 코드 예제에서는 CollectionBase 클래스를 구현하고 해당 구현을 사용하여 Int16 개체의 컬렉션을 만듭니다.

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

*/



import System.* ;
import System.Collections.*;
import System.Collections.CollectionBase.*;

public class Int16Collection extends CollectionBase
{
    /** @property 
     */
    public short get_Value(int index)
    {
        short s = System.Convert.ToInt16(get_List().get_Item(index));
        return(s) ; 
    } //get_Value

    /** @property 
     */
    public void set_Value(int index,short value)
    {
        get_List().set_Item(index, (Int16)value);
    } //set_Value

    public int Add(short value) 
    {
        return get_List().Add((Int16)value);
    } //Add

    public int IndexOf(short value)
    {
        return get_List().IndexOf((Int16)value);
    } //IndexOf

    public void Insert(int index, short value) 
    {
        get_List().Insert(index, (Int16)value);
    } //Insert

    public void Remove(short value) 
    {
        get_List().Remove((Int16)value);
    } //Remove

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

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

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

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

    protected   void OnValidate(Object value) 
    {
        if ( value.GetType() != Type.GetType("System.Int16")  ) {
            throw new ArgumentException("value must be of type Int16.", 
                "value");
        }
    } //OnValidate
} //Int16Collection

public class SamplesCollectionBase
{
    public static void main(String[] args)
    {
        // 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 for.
        Console.WriteLine("Contents of the collection (using for):");
        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}", 
            (System.Boolean)myI16.Contains((Int16)3));
        Console.WriteLine("2 is at index {0}.", 
            (Int16)myI16.IndexOf((Int16)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 .set_Item( 4 ,(Int16)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);
   } //main

   // Uses the Count property and the Item property.
    public static void PrintIndexAndValues(Int16Collection myCol) 
    {
        for(int i = 0; i < myCol.get_Count(); i++) {
            Console.WriteLine("   [{0}]:   {1}", (Int32)i, 
                myCol.get_Item(i));
        } 
        Console.WriteLine();
    } //PrintIndexAndValues

    // 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 PrintValues1(Int16Collection myCol) 
    {
        for (int iCtr = 0; iCtr < myCol.get_Count(); iCtr++) {
            Console.WriteLine("   {0}", myCol.get_Item(iCtr));
        }
        Console.WriteLine();
    } //PrintValues1

    // Uses the enumerator. 
    // NOTE: The for 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.get_Current());
        }
        Console.WriteLine();
    } //PrintValues2
} //SamplesCollectionBase

/* 
Contents of the collection (using for):
   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

*/



System.Object
  System.Collections.CollectionBase
    Microsoft.ManagementConsole.BaseCollection
    Microsoft.Web.Management.Client.TaskListCollection
    System.CodeDom.CodeAttributeArgumentCollection
    System.CodeDom.CodeAttributeDeclarationCollection
    System.CodeDom.CodeCatchClauseCollection
    System.CodeDom.CodeCommentStatementCollection
    System.CodeDom.CodeDirectiveCollection
    System.CodeDom.CodeExpressionCollection
    System.CodeDom.CodeNamespaceCollection
    System.CodeDom.CodeParameterDeclarationExpressionCollection
    System.CodeDom.CodeStatementCollection
    System.CodeDom.CodeTypeDeclarationCollection
    System.CodeDom.CodeTypeMemberCollection
    System.CodeDom.CodeTypeParameterCollection
    System.CodeDom.CodeTypeReferenceCollection
    System.CodeDom.Compiler.CompilerErrorCollection
    System.ComponentModel.Design.Data.DataSourceDescriptorCollection
    System.ComponentModel.Design.Data.DataSourceGroupCollection
    System.ComponentModel.Design.DesignerActionItemCollection
    System.ComponentModel.Design.DesignerActionListCollection
    System.ComponentModel.Design.DesignerVerbCollection
    System.Configuration.Install.InstallerCollection
    System.Data.SqlClient.SqlBulkCopyColumnMappingCollection
    System.Diagnostics.CounterCreationDataCollection
    System.Diagnostics.EventLogPermissionEntryCollection
    System.Diagnostics.PerformanceCounterPermissionEntryCollection
    System.DirectoryServices.ActiveDirectory.ActiveDirectorySchemaClassCollection
    System.DirectoryServices.ActiveDirectory.ActiveDirectorySchemaPropertyCollection
    System.DirectoryServices.ActiveDirectory.ActiveDirectorySiteCollection
    System.DirectoryServices.ActiveDirectory.ActiveDirectorySiteLinkCollection
    System.DirectoryServices.ActiveDirectory.ActiveDirectorySubnetCollection
    System.DirectoryServices.ActiveDirectory.DirectoryServerCollection
    System.DirectoryServices.DirectoryServicesPermissionEntryCollection
    System.DirectoryServices.PropertyValueCollection
    System.DirectoryServices.Protocols.DirectoryAttribute
    System.DirectoryServices.Protocols.DirectoryAttributeCollection
    System.DirectoryServices.Protocols.DirectoryAttributeModificationCollection
    System.DirectoryServices.Protocols.DirectoryControlCollection
    System.Messaging.AccessControlList
    System.Messaging.MessageQueuePermissionEntryCollection
    System.Security.Cryptography.X509Certificates.X509CertificateCollection
    System.ServiceProcess.ServiceControllerPermissionEntryCollection
    System.Web.ParserErrorCollection
    System.Web.Services.Description.BasicProfileViolationCollection
    System.Web.Services.Description.MimePartCollection
    System.Web.Services.Description.MimeTextMatchCollection
    System.Web.Services.Description.ServiceDescriptionBaseCollection
    System.Web.Services.Description.WebReferenceCollection
    System.Web.Services.Discovery.DiscoveryClientResultCollection
    System.Web.Services.Discovery.DiscoveryReferenceCollection
    System.Web.Services.Protocols.SoapHeaderCollection
    System.Web.UI.WebControls.EmbeddedMailObjectsCollection
    System.Web.UI.WebControls.RoleGroupCollection
    System.Web.UI.WebControls.WebParts.ProxyWebPartConnectionCollection
    System.Web.UI.WebControls.WebParts.WebPartConnectionCollection
    System.Web.UI.WebControls.WebParts.WebPartDisplayModeCollection
    System.Web.UI.WebControls.WebParts.WebPartTransformerCollection
    System.Windows.Documents.LinkTargetCollection
    System.Windows.Forms.Design.Behavior.BehaviorServiceAdornerCollection
    System.Windows.Forms.Design.Behavior.GlyphCollection
    System.Xml.Schema.XmlSchemaObjectCollection
    System.Xml.Serialization.Advanced.SchemaImporterExtensionCollection
    System.Xml.Serialization.XmlAnyElementAttributes
    System.Xml.Serialization.XmlArrayItemAttributes
    System.Xml.Serialization.XmlElementAttributes
    System.Xml.Serialization.XmlSchemas

이 형식의 public static(Visual Basic의 경우 Shared) 멤버는 스레드로부터 안전합니다. 모든 인스턴스 멤버는 스레드로부터 안전하지 않을 수 있습니다.

이렇게 구현하면 CollectionBase에 대해 동기화되어 스레드로부터 안전하게 보호되는 래퍼가 제공되지 않지만 파생 클래스에서는 SyncRoot 속성을 사용하여 CollectionBase의 자체 동기화 버전을 만들 수 있습니다.

컬렉션을 열거하는 프로시저는 기본적으로 스레드로부터 안전하지 않습니다. 컬렉션이 동기화되어 있을 때 다른 스레드에서 해당 컬렉션을 수정할 수 있으므로 이렇게 되면 열거자에서 예외가 throw됩니다. 열거하는 동안 스레드로부터 안전하게 보호하려면 전체 열거를 수행하는 동안 컬렉션을 잠그거나 다른 스레드에서 변경하여 발생한 예외를 catch하면 됩니다.

Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360

.NET Framework 및 .NET Compact Framework에서 모든 플랫폼의 전체 버전을 지원하지는 않습니다. 지원되는 버전의 목록을 보려면 .NET Framework 시스템 요구 사항을 참조하십시오.

.NET Framework

3.5, 3.0, 2.0, 1.1, 1.0에서 지원

.NET Compact Framework

3.5, 2.0, 1.0에서 지원

XNA Framework

2.0, 1.0에서 지원

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