SortedList.Add(Object, Object) 方法

public:
 virtual void Add(System::Object ^ key, System::Object ^ value);

public virtual void Add (object key, object value);

public virtual void Add (object key, object? value);

abstract member Add : obj * obj -> unit
override this.Add : obj * obj -> unit

Public Overridable Sub Add (key As Object, value As Object)

参数

实现

例外

示例

下面的代码示例演示如何向 对象添加元素 SortedList 。

#using <system.dll>

using namespace System;
using namespace System::Collections;
void PrintKeysAndValues( SortedList^ myList )
{
   Console::WriteLine(  "\t-KEY-\t-VALUE-" );
   for ( int i = 0; i < myList->Count; i++ )
   {
      Console::WriteLine(  "\t{0}:\t{1}", myList->GetKey( i ), myList->GetByIndex( i ) );

   }
   Console::WriteLine();
}

int main()
{
   
   // Creates and initializes a new SortedList.
   SortedList^ mySL = gcnew SortedList;
   mySL->Add( "one", "The" );
   mySL->Add( "two", "quick" );
   mySL->Add( "three", "brown" );
   mySL->Add( "four", "fox" );
   
   // Displays the SortedList.
   Console::WriteLine(  "The SortedList contains the following:" );
   PrintKeysAndValues( mySL );
}

/* 
This code produces the following output.

The SortedList contains the following:
        -KEY-   -VALUE-
        four:   fox
        one:    The
        three:  brown
        two:    quick
*/

using System;
using System.Collections;
public class SamplesSortedList  {

   public static void Main()  {

      // Creates and initializes a new SortedList.
      SortedList mySL = new SortedList();
      mySL.Add( "one", "The" );
      mySL.Add( "two", "quick" );
      mySL.Add( "three", "brown" );
      mySL.Add( "four", "fox" );

      // Displays the SortedList.
      Console.WriteLine( "The SortedList contains the following:" );
      PrintKeysAndValues( mySL );
   }

   public static void PrintKeysAndValues( SortedList myList )  {
      Console.WriteLine( "\t-KEY-\t-VALUE-" );
      for ( int i = 0; i < myList.Count; i++ )  {
         Console.WriteLine( "\t{0}:\t{1}", myList.GetKey(i), myList.GetByIndex(i) );
      }
      Console.WriteLine();
   }
}
/*
This code produces the following output.

The SortedList contains the following:
    -KEY-    -VALUE-
    four:    fox
    one:    The
    three:    brown
    two:    quick
*/

Imports System.Collections

Public Class SamplesSortedList    
    
    Public Shared Sub Main()
        
        ' Creates and initializes a new SortedList.
        Dim mySL As New SortedList()
        mySL.Add("one", "The")
        mySL.Add("two", "quick")
        mySL.Add("three", "brown")
        mySL.Add("four", "fox")
        
        ' Displays the SortedList.
        Console.WriteLine("The SortedList contains the following:")
        PrintKeysAndValues(mySL)
    End Sub    
    
    Public Shared Sub PrintKeysAndValues(myList As SortedList)
        Console.WriteLine(ControlChars.Tab & "-KEY-" & ControlChars.Tab & _
           "-VALUE-")
        Dim i As Integer
        For i = 0 To myList.Count - 1
            Console.WriteLine(ControlChars.Tab & "{0}:" & ControlChars.Tab & _
               "{1}", myList.GetKey(i), myList.GetByIndex(i))
        Next i
        Console.WriteLine()
    End Sub
End Class

' This code produces the following output.
' 
' The SortedList contains the following:
'     -KEY-    -VALUE-
'     four:    fox
'     one:    The
'     three:    brown
'     two:    quick

注解

插入点是根据创建对象时选择的比较器确定的（显式的或默认的 SortedList ）。

如果 Count 已等于 Capacity，则通过自动重新分配内部数组来增加对象的容量 SortedList ，并在添加新元素之前将现有元素复制到新数组。

还可以使用 Item[] 属性通过设置对象 (中 SortedList 不存在的键的值来添加新元素，例如， myCollection["myNonexistentKey"] = myValue) 。 但是，如果 指定的键已存在于 中 SortedList，设置 属性 Item[] 将覆盖旧值。 相反， Add 方法不修改现有元素。

对象的元素SortedList根据创建 时SortedList指定的特定IComparer实现或IComparable键本身提供的实现按键排序。

键不能是 null，但值可以是 。

此方法是 O(n) 针对未排序数据的操作，其中 n 为 Count。 如果在列表末尾添加新元素，则这是一个 O(log n) 操作。 如果插入导致重设大小，则操作为 O(n)。

适用于

另请参阅

• Item[Object]
• IComparer
• IComparable
• Capacity