SortedList<TKey,TValue>.IDictionary.Remove(Object) メソッド

定義

指定したキーを持つ要素を IDictionary から削除します。Removes the element with the specified key from the IDictionary.

 virtual void System.Collections.IDictionary.Remove(System::Object ^ key) = System::Collections::IDictionary::Remove;
void IDictionary.Remove (object key);
Sub Remove (key As Object) Implements IDictionary.Remove

パラメーター

key
Object

削除する要素のキー。The key of the element to remove.

実装

例外

keynull です。key is null.

次のコード例は、 IDictionary.Remove System.Collections.IDictionaryインターフェイスのをと共SortedList<TKey,TValue>に使用する方法を示しています。The following code example shows how to use the IDictionary.Remove of the System.Collections.IDictionary interface with a SortedList<TKey,TValue>.

このコード例は、 IDictionary.Addメソッドに指定された出力を含む、より大きな例の一部です。The code example is part of a larger example, including output, provided for the IDictionary.Add method.

using System;
using System.Collections;
using System.Collections.Generic;

public class Example
{
    public static void Main()
    {
        // Create a new sorted list of strings, with string keys,
        // and access it using the IDictionary interface.
        //
        IDictionary openWith = new SortedList<string, string>();

        // Add some elements to the sorted list. There are no 
        // duplicate keys, but some of the values are duplicates.
        // IDictionary.Add throws an exception if incorrect types
        // are supplied for key or value.
        openWith.Add("txt", "notepad.exe");
        openWith.Add("bmp", "paint.exe");
        openWith.Add("dib", "paint.exe");
        openWith.Add("rtf", "wordpad.exe");
Imports System.Collections
Imports System.Collections.Generic

Public Class Example
    
    Public Shared Sub Main() 

        ' Create a new sorted list of strings, with string keys,
        ' and access it using the IDictionary interface.
        '
        Dim openWith As IDictionary = _
            New sortedList(Of String, String)
        
        ' Add some elements to the sorted list. There are no 
        ' duplicate keys, but some of the values are duplicates.
        ' IDictionary.Add throws an exception if incorrect types
        ' are supplied for key or value.
        openWith.Add("txt", "notepad.exe")
        openWith.Add("bmp", "paint.exe")
        openWith.Add("dib", "paint.exe")
        openWith.Add("rtf", "wordpad.exe")
// Use the Remove method to remove a key/value pair. No
// exception is thrown if the wrong data type is supplied.
Console.WriteLine("\nRemove(\"dib\")");
openWith.Remove("dib");

if (!openWith.Contains("dib"))
{
    Console.WriteLine("Key \"dib\" is not found.");
}
' Use the Remove method to remove a key/value pair. No
' exception is thrown if the wrong data type is supplied.
Console.WriteLine(vbLf + "Remove(""dib"")")
openWith.Remove("dib")

If Not openWith.Contains("dib") Then
    Console.WriteLine("Key ""dib"" is not found.")
End If
    }
}

    End Sub

End Class

注釈

このメソッドは、バイナリ検索を実行します。ただし、要素は、開いている場所を埋めるために上に移動されるため、このnメソッドは O ( n ) Count演算です。ここで、はです。This method performs a binary search; however, the elements are moved up to fill in the open spot, so this method is an O(n) operation, where n is Count.

適用対象

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