NameObjectCollectionBase Sınıf

Tanım

public ref class NameObjectCollectionBase abstract : System::Collections::ICollection

public ref class NameObjectCollectionBase abstract : System::Collections::ICollection, System::Runtime::Serialization::IDeserializationCallback, System::Runtime::Serialization::ISerializable

public abstract class NameObjectCollectionBase : System.Collections.ICollection

public abstract class NameObjectCollectionBase : System.Collections.ICollection, System.Runtime.Serialization.IDeserializationCallback, System.Runtime.Serialization.ISerializable

[System.Serializable]
public abstract class NameObjectCollectionBase : System.Collections.ICollection, System.Runtime.Serialization.IDeserializationCallback, System.Runtime.Serialization.ISerializable

type NameObjectCollectionBase = class
    interface ICollection
    interface IEnumerable

type NameObjectCollectionBase = class
    interface ICollection
    interface IEnumerable
    interface IDeserializationCallback
    interface ISerializable

type NameObjectCollectionBase = class
    interface ICollection
    interface IEnumerable
    interface ISerializable
    interface IDeserializationCallback

[<System.Serializable>]
type NameObjectCollectionBase = class
    interface ICollection
    interface IEnumerable
    interface ISerializable
    interface IDeserializationCallback

Public MustInherit Class NameObjectCollectionBase
Implements ICollection

Public MustInherit Class NameObjectCollectionBase
Implements ICollection, IDeserializationCallback, ISerializable

Devralma

Object

NameObjectCollectionBase

Türetilmiş

System.Collections.Specialized.NameValueCollection

System.Configuration.ConfigurationSectionCollection

System.Configuration.ConfigurationSectionGroupCollection

System.Configuration.PropertyInformationCollection

System.Management.ManagementNamedValueCollection

Diğer…

Öznitelikler

SerializableAttribute

Uygulamalar

ICollection IEnumerable IDeserializationCallback ISerializable

Örnekler

Aşağıdaki kod örneği, sınıfının nasıl uygulanıp kullanılacağını NameObjectCollectionBase gösterir.

#using <System.dll>
using namespace System;
using namespace System::Collections;
using namespace System::Collections::Specialized;

public ref class MyCollection : public NameObjectCollectionBase  {

private:
   DictionaryEntry^ _de;

   // Creates an empty collection.
public:
   MyCollection()  {
      _de = gcnew DictionaryEntry();
   }

   // Adds elements from an IDictionary into the new collection.
   MyCollection( IDictionary^ d, Boolean bReadOnly )  {

      _de = gcnew DictionaryEntry();

      for each ( DictionaryEntry^ de in d )  {
         this->BaseAdd( (String^) de->Key, de->Value );
      }
      this->IsReadOnly = bReadOnly;
   }

   // Gets a key-and-value pair (DictionaryEntry) using an index.
   property DictionaryEntry^ default[ int ]  {
      DictionaryEntry^ get(int index)  {
         _de->Key = this->BaseGetKey(index);
         _de->Value = this->BaseGet(index);
         return( _de );
      }
   }

   // Gets or sets the value associated with the specified key.
   property Object^ default[ String^ ]  {
      Object^ get(String^ key)  {
         return( this->BaseGet( key ) );
      }
      void set( String^ key, Object^ value )  {
         this->BaseSet( key, value );
      }
   }

   // Gets a String array that contains all the keys in the collection.
   property array<String^>^ AllKeys  {
      array<String^>^ get()  {
         return( (array<String^>^)this->BaseGetAllKeys() );
      }
   }

   // Gets an Object array that contains all the values in the collection.
   property Array^ AllValues  {
      Array^ get()  {
         return( this->BaseGetAllValues() );
      }
   }

   // Gets a String array that contains all the values in the collection.
   property array<String^>^ AllStringValues  {
      array<String^>^ get()  {
         return( (array<String^>^) this->BaseGetAllValues(  String ::typeid ));
      }
   }

   // Gets a value indicating if the collection contains keys that are not null.
   property Boolean HasKeys  {
      Boolean get()  {
         return( this->BaseHasKeys() );
      }
   }

   // Adds an entry to the collection.
   void Add( String^ key, Object^ value )  {
      this->BaseAdd( key, value );
   }

   // Removes an entry with the specified key from the collection.
   void Remove( String^ key )  {
      this->BaseRemove( key );
   }

   // Removes an entry in the specified index from the collection.
   void Remove( int index )  {
      this->BaseRemoveAt( index );
   }

   // Clears all the elements in the collection.
   void Clear()  {
      this->BaseClear();
   }
};

public ref class SamplesNameObjectCollectionBase  {

public:
   static void Main()  {
      // Creates and initializes a new MyCollection that is read-only.
      IDictionary^ d = gcnew ListDictionary();
      d->Add( "red", "apple" );
      d->Add( "yellow", "banana" );
      d->Add( "green", "pear" );
      MyCollection^ myROCol = gcnew MyCollection( d, true );

      // Tries to add a new item.
      try  {
         myROCol->Add( "blue", "sky" );
      }
      catch ( NotSupportedException^ e )  {
         Console::WriteLine( e->ToString() );
      }

      // Displays the keys and values of the MyCollection.
      Console::WriteLine( "Read-Only Collection:" );
      PrintKeysAndValues( myROCol );

      // Creates and initializes an empty MyCollection that is writable.
      MyCollection^ myRWCol = gcnew MyCollection();

      // Adds new items to the collection.
      myRWCol->Add( "purple", "grape" );
      myRWCol->Add( "orange", "tangerine" );
      myRWCol->Add( "black", "berries" );
      Console::WriteLine( "Writable Collection (after adding values):" );
      PrintKeysAndValues( myRWCol );

      // Changes the value of one element.
      myRWCol["orange"] = "grapefruit";
      Console::WriteLine( "Writable Collection (after changing one value):" );
      PrintKeysAndValues( myRWCol );

      // Removes one item from the collection.
      myRWCol->Remove( "black" );
      Console::WriteLine( "Writable Collection (after removing one value):" );
      PrintKeysAndValues( myRWCol );

      // Removes all elements from the collection.
      myRWCol->Clear();
      Console::WriteLine( "Writable Collection (after clearing the collection):" );
      PrintKeysAndValues( myRWCol );
   }

   // Prints the indexes, keys, and values.
   static void PrintKeysAndValues( MyCollection^ myCol )  {
      for ( int i = 0; i < myCol->Count; i++ )  {
         Console::WriteLine( "[{0}] : {1}, {2}", i, myCol[i]->Key, myCol[i]->Value );
      }
   }

   // Prints the keys and values using AllKeys.
   static void PrintKeysAndValues2( MyCollection^ myCol )  {
      for each ( String^ s in myCol->AllKeys )  {
         Console::WriteLine( "{0}, {1}", s, myCol[s] );
      }
   }
};

int main()
{
    SamplesNameObjectCollectionBase::Main();
}

/*
This code produces the following output.

System.NotSupportedException: Collection is read-only.
   at System.Collections.Specialized.NameObjectCollectionBase.BaseAdd(String name, Object value)
   at SamplesNameObjectCollectionBase.Main()
Read-Only Collection:
[0] : red, apple
[1] : yellow, banana
[2] : green, pear
Writable Collection (after adding values):
[0] : purple, grape
[1] : orange, tangerine
[2] : black, berries
Writable Collection (after changing one value):
[0] : purple, grape
[1] : orange, grapefruit
[2] : black, berries
Writable Collection (after removing one value):
[0] : purple, grape
[1] : orange, grapefruit
Writable Collection (after clearing the collection):

*/

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

public class MyCollection : NameObjectCollectionBase
{
   // Creates an empty collection.
   public MyCollection()  {
   }

   // Adds elements from an IDictionary into the new collection.
   public MyCollection( IDictionary d, Boolean bReadOnly )  {
      foreach ( DictionaryEntry de in d )  {
         this.BaseAdd( (String) de.Key, de.Value );
      }
      this.IsReadOnly = bReadOnly;
   }

   // Gets a key-and-value pair (DictionaryEntry) using an index.
   public DictionaryEntry this[ int index ]  {
      get  {
          return ( new DictionaryEntry(
              this.BaseGetKey(index), this.BaseGet(index) ) );
      }
   }

   // Gets or sets the value associated with the specified key.
   public Object this[ String key ]  {
      get  {
         return( this.BaseGet( key ) );
      }
      set  {
         this.BaseSet( key, value );
      }
   }

   // Gets a String array that contains all the keys in the collection.
   public String[] AllKeys  {
      get  {
         return( this.BaseGetAllKeys() );
      }
   }

   // Gets an Object array that contains all the values in the collection.
   public Array AllValues  {
      get  {
         return( this.BaseGetAllValues() );
      }
   }

   // Gets a String array that contains all the values in the collection.
   public String[] AllStringValues  {
      get  {
         return( (String[]) this.BaseGetAllValues( typeof( string ) ));
      }
   }

   // Gets a value indicating if the collection contains keys that are not null.
   public Boolean HasKeys  {
      get  {
         return( this.BaseHasKeys() );
      }
   }

   // Adds an entry to the collection.
   public void Add( String key, Object value )  {
      this.BaseAdd( key, value );
   }

   // Removes an entry with the specified key from the collection.
   public void Remove( String key )  {
      this.BaseRemove( key );
   }

   // Removes an entry in the specified index from the collection.
   public void Remove( int index )  {
      this.BaseRemoveAt( index );
   }

   // Clears all the elements in the collection.
   public void Clear()  {
      this.BaseClear();
   }
}

public class SamplesNameObjectCollectionBase  {

   public static void Main()  {

      // Creates and initializes a new MyCollection that is read-only.
      IDictionary d = new ListDictionary();
      d.Add( "red", "apple" );
      d.Add( "yellow", "banana" );
      d.Add( "green", "pear" );
      MyCollection myROCol = new MyCollection( d, true );

      // Tries to add a new item.
      try  {
         myROCol.Add( "blue", "sky" );
      }
      catch ( NotSupportedException e )  {
         Console.WriteLine( e.ToString() );
      }

      // Displays the keys and values of the MyCollection.
      Console.WriteLine( "Read-Only Collection:" );
      PrintKeysAndValues( myROCol );

      // Creates and initializes an empty MyCollection that is writable.
      MyCollection myRWCol = new MyCollection();

      // Adds new items to the collection.
      myRWCol.Add( "purple", "grape" );
      myRWCol.Add( "orange", "tangerine" );
      myRWCol.Add( "black", "berries" );
      Console.WriteLine( "Writable Collection (after adding values):" );
      PrintKeysAndValues( myRWCol );

      // Changes the value of one element.
      myRWCol["orange"] = "grapefruit";
      Console.WriteLine( "Writable Collection (after changing one value):" );
      PrintKeysAndValues( myRWCol );

      // Removes one item from the collection.
      myRWCol.Remove( "black" );
      Console.WriteLine( "Writable Collection (after removing one value):" );
      PrintKeysAndValues( myRWCol );

      // Removes all elements from the collection.
      myRWCol.Clear();
      Console.WriteLine( "Writable Collection (after clearing the collection):" );
      PrintKeysAndValues( myRWCol );
   }

   // Prints the indexes, keys, and values.
   public static void PrintKeysAndValues( MyCollection myCol )  {
      for ( int i = 0; i < myCol.Count; i++ )  {
         Console.WriteLine( "[{0}] : {1}, {2}", i, myCol[i].Key, myCol[i].Value );
      }
   }

   // Prints the keys and values using AllKeys.
   public static void PrintKeysAndValues2( MyCollection myCol )  {
      foreach ( String s in myCol.AllKeys )  {
         Console.WriteLine( "{0}, {1}", s, myCol[s] );
      }
   }
}


/*
This code produces the following output.

System.NotSupportedException: Collection is read-only.
   at System.Collections.Specialized.NameObjectCollectionBase.BaseAdd(String name, Object value)
   at SamplesNameObjectCollectionBase.Main()
Read-Only Collection:
[0] : red, apple
[1] : yellow, banana
[2] : green, pear
Writable Collection (after adding values):
[0] : purple, grape
[1] : orange, tangerine
[2] : black, berries
Writable Collection (after changing one value):
[0] : purple, grape
[1] : orange, grapefruit
[2] : black, berries
Writable Collection (after removing one value):
[0] : purple, grape
[1] : orange, grapefruit
Writable Collection (after clearing the collection):

*/

Imports System.Collections
Imports System.Collections.Specialized

Public Class MyCollection
   Inherits NameObjectCollectionBase

   ' Creates an empty collection.
   Public Sub New()
   End Sub

   ' Adds elements from an IDictionary into the new collection.
   Public Sub New(d As IDictionary, bReadOnly As Boolean)
      Dim de As DictionaryEntry
      For Each de In  d
         Me.BaseAdd(CType(de.Key, String), de.Value)
      Next de
      Me.IsReadOnly = bReadOnly
   End Sub

   ' Gets a key-and-value pair (DictionaryEntry) using an index.
   Default Public ReadOnly Property Item(index As Integer) As DictionaryEntry
      Get
            return new DictionaryEntry( _
                me.BaseGetKey(index), me.BaseGet(index) )
      End Get
   End Property

   ' Gets or sets the value associated with the specified key.
   Default Public Property Item(key As String) As Object
      Get
         Return Me.BaseGet(key)
      End Get
      Set
         Me.BaseSet(key, value)
      End Set
   End Property

   ' Gets a String array that contains all the keys in the collection.
   Public ReadOnly Property AllKeys() As String()
      Get
         Return Me.BaseGetAllKeys()
      End Get
   End Property

   ' Gets an Object array that contains all the values in the collection.
   Public ReadOnly Property AllValues() As Array
      Get
         Return Me.BaseGetAllValues()
      End Get
   End Property

   ' Gets a String array that contains all the values in the collection.
   Public ReadOnly Property AllStringValues() As String()
      Get
         Return CType(Me.BaseGetAllValues(GetType(String)), String())
      End Get
   End Property

   ' Gets a value indicating if the collection contains keys that are not null.
   Public ReadOnly Property HasKeys() As Boolean
      Get
         Return Me.BaseHasKeys()
      End Get
   End Property

   ' Adds an entry to the collection.
   Public Sub Add(key As String, value As Object)
      Me.BaseAdd(key, value)
   End Sub

   ' Removes an entry with the specified key from the collection.
   Overloads Public Sub Remove(key As String)
      Me.BaseRemove(key)
   End Sub

   ' Removes an entry in the specified index from the collection.
   Overloads Public Sub Remove(index As Integer)
      Me.BaseRemoveAt(index)
   End Sub

   ' Clears all the elements in the collection.
   Public Sub Clear()
      Me.BaseClear()
   End Sub

End Class


Public Class SamplesNameObjectCollectionBase   

   Public Shared Sub Main()

      ' Creates and initializes a new MyCollection that is read-only.
      Dim d As New ListDictionary()
      d.Add("red", "apple")
      d.Add("yellow", "banana")
      d.Add("green", "pear")
      Dim myROCol As New MyCollection(d, True)

      ' Tries to add a new item.
      Try
         myROCol.Add("blue", "sky")
      Catch e As NotSupportedException
         Console.WriteLine(e.ToString())
      End Try

      ' Displays the keys and values of the MyCollection.
      Console.WriteLine("Read-Only Collection:")
      PrintKeysAndValues(myROCol)

      ' Creates and initializes an empty MyCollection that is writable.
      Dim myRWCol As New MyCollection()

      ' Adds new items to the collection.
      myRWCol.Add("purple", "grape")
      myRWCol.Add("orange", "tangerine")
      myRWCol.Add("black", "berries")
      Console.WriteLine("Writable Collection (after adding values):")
      PrintKeysAndValues(myRWCol)

      ' Changes the value of one element.
      myRWCol("orange") = "grapefruit"
      Console.WriteLine("Writable Collection (after changing one value):")
      PrintKeysAndValues(myRWCol)

      ' Removes one item from the collection.
      myRWCol.Remove("black")
      Console.WriteLine("Writable Collection (after removing one value):")
      PrintKeysAndValues(myRWCol)

      ' Removes all elements from the collection.
      myRWCol.Clear()
      Console.WriteLine("Writable Collection (after clearing the collection):")
      PrintKeysAndValues(myRWCol)

   End Sub

   ' Prints the indexes, keys, and values.
   Public Shared Sub PrintKeysAndValues(myCol As MyCollection)
      Dim i As Integer
      For i = 0 To myCol.Count - 1
         Console.WriteLine("[{0}] : {1}, {2}", i, myCol(i).Key, myCol(i).Value)
      Next i
   End Sub

   ' Prints the keys and values using AllKeys.
   Public Shared Sub PrintKeysAndValues2(myCol As MyCollection)
      Dim s As String
      For Each s In  myCol.AllKeys
         Console.WriteLine("{0}, {1}", s, myCol(s))
      Next s
   End Sub

End Class


'This code produces the following output.
'
'System.NotSupportedException: Collection is read-only.
'   at System.Collections.Specialized.NameObjectCollectionBase.BaseAdd(String name, Object value)
'   at SamplesNameObjectCollectionBase.Main()
'Read-Only Collection:
'[0] : red, apple
'[1] : yellow, banana
'[2] : green, pear
'Writable Collection (after adding values):
'[0] : purple, grape
'[1] : orange, tangerine
'[2] : black, berries
'Writable Collection (after changing one value):
'[0] : purple, grape
'[1] : orange, grapefruit
'[2] : black, berries
'Writable Collection (after removing one value):
'[0] : purple, grape
'[1] : orange, grapefruit
'Writable Collection (after clearing the collection):

Açıklamalar

Bu sınıfın temel yapısı bir karma tablodur.

Her öğe bir anahtar/değer çiftidir.

' NameObjectCollectionBase nin kapasitesi, barındırabileceği öğelerin NameObjectCollectionBase sayısıdır. öğesine öğeler eklendikçe NameObjectCollectionBasekapasite, yeniden ayırma işlemiyle gerektiği gibi otomatik olarak artırılır.

Karma kod sağlayıcısı örnekteki NameObjectCollectionBase anahtarlar için karma kodları dağıtır. Varsayılan karma kod sağlayıcısı şeklindedir CaseInsensitiveHashCodeProvider.

Karşılaştırıcı, iki anahtarın eşit olup olmadığını belirler. Varsayılan karşılaştırıcı değeridir CaseInsensitiveComparer.

.NET Framework sürüm 1.0'da bu sınıf kültüre duyarlı dize karşılaştırmaları kullanır. Ancak, .NET Framework sürüm 1.1 ve sonraki sürümlerde, bu sınıf dizeleri karşılaştırırken kullanırCultureInfo.InvariantCulture. Kültürün karşılaştırmaları ve sıralamayı nasıl etkilediği hakkında daha fazla bilgi için bkz. Culture-Insensitive Dize İşlemleri Gerçekleştirme.

null anahtar veya değer olarak izin verilir.

Oluşturucular

Özellikler

Yöntemler

Belirtik Arabirim Kullanımları

Uzantı Metotları

Şunlara uygulanır

İş Parçacığı Güvenliği

Bu türün genel statik (Shared Visual Basic'te) üyeleri iş parçacığı güvenlidir. Örnek üyelerin iş parçacığı güvenli olmaları garanti edilmez.

Bu uygulama, için NameObjectCollectionBaseeşitlenmiş (iş parçacığı güvenli) sarmalayıcı sağlamaz, ancak türetilmiş sınıflar özelliğini kullanarak SyncRoot kendi eşitlenmiş sürümlerini NameObjectCollectionBase oluşturabilir.

Bir koleksiyonda numaralandırmak, doğası gereği iş parçacığı güvenli bir yordam değildir. Bir koleksiyon eşitlendiği zaman bile, diğer iş parçacıkları numaralandırıcının özel durum oluşturmasına neden olan koleksiyonu değiştirebilir. Numaralandırma sırasında iş parçacığı güvenliği sağlamak için tüm numaralandırma sırasında koleksiyonu kilitleyebilir veya diğer iş parçacıkları tarafından yapılan değişikliklerden kaynaklanan özel durumları yakalayabilirsiniz.

Ayrıca bkz.

• Hashtable
• NameValueCollection
• String
• Kültüre Duyarsız Dize İşlemlerini Gerçekleştirme