NameObjectCollectionBase.BaseAdd(String, Object) NameObjectCollectionBase.BaseAdd(String, Object) NameObjectCollectionBase.BaseAdd(String, Object) NameObjectCollectionBase.BaseAdd(String, Object) Method

定義

指定したキーと値を持つエントリを NameObjectCollectionBase インスタンスに追加します。Adds an entry with the specified key and value into the NameObjectCollectionBase instance.

protected:
 void BaseAdd(System::String ^ name, System::Object ^ value);
protected void BaseAdd (string name, object value);
member this.BaseAdd : string * obj -> unit
Protected Sub BaseAdd (name As String, value As Object)

パラメーター

name
String String String String

追加するエントリの String キー。The String key of the entry to add. キーとして null を指定できます。The key can be null.

value
Object Object Object Object

追加するエントリの Object 値。The Object value of the entry to add. 値として null を指定できます。The value can be null.

例外

コレクションは読み取り専用です。The collection is read-only.

次のコード例でBaseAddは、を使用NameObjectCollectionBaseして、 IDictionaryからの要素を含む新しいを作成します。The following code example uses BaseAdd to create a new NameObjectCollectionBase with elements from an IDictionary.

#using <system.dll>

using namespace System;
using namespace System::Collections;
using namespace System::Collections::Specialized;
public ref class MyCollection: public NameObjectCollectionBase
{
private:
   DictionaryEntry _de;

public:

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

   // Adds elements from an IDictionary* into the new collection.
   MyCollection( IDictionary^ d )
   {
      IEnumerator^ myEnum = d->GetEnumerator();
      while ( myEnum->MoveNext() )
      {
         DictionaryEntry^ de = safe_cast<DictionaryEntry^>(myEnum->Current);
         this->BaseAdd( safe_cast<String^>(de->Key), de->Value );
      }
   }
};

int main()
{
   // Creates and initializes a new MyCollection instance.
   IDictionary^ d = gcnew ListDictionary;
   d->Add( "red", "apple" );
   d->Add( "yellow", "banana" );
   d->Add( "green", "pear" );
   MyCollection^ myCol = gcnew MyCollection( d );

   // Displays the keys and values of the MyCollection instance.
   for ( int i = 0; i < myCol->Count; i++ )
   {
      Console::WriteLine( "[{0}] : {1}, {2}", i, myCol->Item[ i ].Key, myCol->Item[ i ].Value );
   }
}

/*
This code produces the following output.

[0] : red, apple
[1] : yellow, banana
[2] : green, pear

*/
using System;
using System.Collections;
using System.Collections.Specialized;

public class MyCollection : NameObjectCollectionBase  {

   private DictionaryEntry _de = new DictionaryEntry();

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

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

}

public class SamplesNameObjectCollectionBase  {

   public static void Main()  {

      // Creates and initializes a new MyCollection instance.
      IDictionary d = new ListDictionary();
      d.Add( "red", "apple" );
      d.Add( "yellow", "banana" );
      d.Add( "green", "pear" );
      MyCollection myCol = new MyCollection( d );

      // Displays the keys and values of the MyCollection instance.
      for ( int i = 0; i < myCol.Count; i++ )  {
         Console.WriteLine( "[{0}] : {1}, {2}", i, myCol[i].Key, myCol[i].Value );
      }

   }

}


/*
This code produces the following output.

[0] : red, apple
[1] : yellow, banana
[2] : green, pear

*/
Imports System.Collections
Imports System.Collections.Specialized

Public Class MyCollection
   Inherits NameObjectCollectionBase

   Private _de As New DictionaryEntry()

   ' Gets a key-and-value pair (DictionaryEntry) using an index.
   Default Public ReadOnly Property Item(index As Integer) As DictionaryEntry
      Get
         _de.Key = Me.BaseGetKey(index)
         _de.Value = Me.BaseGet(index)
         Return _de
      End Get
   End Property

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

End Class 'MyCollection


Public Class SamplesNameObjectCollectionBase   

   Public Shared Sub Main()

      ' Creates and initializes a new MyCollection instance.
      Dim d = New ListDictionary()
      d.Add("red", "apple")
      d.Add("yellow", "banana")
      d.Add("green", "pear")
      Dim myCol As New MyCollection(d)

      ' Displays the keys and values of the MyCollection instance.
      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

End Class 'SamplesNameObjectCollectionBase


'This code produces the following output.
'
'[0] : red, apple
'[1] : yellow, banana
'[2] : green, pear

注釈

Count既に容量に等しい場合、の容量NameObjectCollectionBaseは、内部配列が自動的に再割り当てされ、新しい要素が追加される前に既存の要素が新しい配列にコピーされます。If Count already equals the capacity, the capacity of the NameObjectCollectionBase is increased by automatically reallocating the internal array, and the existing elements are copied to the new array before the new element is added.

Count容量より小さい場合、このメソッドは O (1) 操作になります。If Count is less than the capacity, this method is an O(1) operation. 新しい要素を格納するために容量を増やす必要がある場合、このメソッドは On() 操作にnなりCountます。ここで、はです。If the capacity needs to be increased to accommodate the new element, this method becomes an O(n) operation, where n is Count.

適用対象