SortedList<TKey,TValue>.IDictionary.Remove(Object) 方法

定義

命名空間:
System.Collections.Generic
組件:
System.dll, System.Collections.dll
組件:
System.Collections.dll
組件:
netstandard.dll
組件:
System.dll

將有指定索引鍵的項目從 IDictionary 移除。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);
abstract member System.Collections.IDictionary.Remove : obj -> unit
override this.System.Collections.IDictionary.Remove : obj -> unit
Sub Remove (key As Object) Implements IDictionary.Remove

參數

key
Object

要移除的項目索引鍵。The key of the element to remove.

實作

Remove(Object)

例外狀況

ArgumentNullException

key 為 null。key is null.

範例

下列程式碼範例示範如何搭配使用 IDictionary.Remove System.Collections.IDictionary 介面的 SortedList<TKey,TValue> 。The following code example shows how to use the IDictionary.Remove of the System.Collections.IDictionary interface with a SortedList<TKey,TValue>.

程式碼範例是針對方法提供的較大範例（包括輸出）的一部分 IDictionary.Add 。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

備註

這個方法會執行二進位搜尋;不過，專案會向上移動以填滿開啟位置，因此這個方法是 (的 n) 作業，其中 n 是 Count 。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.

適用於

另請參閱