SortedList.CopyTo(Array, Int32) 方法

定义

命名空间:

System.Collections

程序集:

System.Collections.NonGeneric.dll

Source:

SortedList.cs

从指定数组索引开始将 SortedList 元素复制到一维 Array 对象中。

public:
 virtual void CopyTo(Array ^ array, int arrayIndex);

public virtual void CopyTo (Array array, int arrayIndex);

abstract member CopyTo : Array * int -> unit
override this.CopyTo : Array * int -> unit

Public Overridable Sub CopyTo (array As Array, arrayIndex As Integer)

参数

array

Array

一维 Array 对象，它是从 DictionaryEntry 复制的 SortedList 对象的目标位置。 Array 必须具有从零开始的索引。

arrayIndex

Int32

array 中从零开始的索引，从此处开始复制。

实现

CopyTo(Array, Int32)

例外

ArgumentNullException

array 为 null。

ArgumentOutOfRangeException

arrayIndex 小于零。

ArgumentException

array 是多维的。

- 或 -

源 SortedList 对象中的元素数目大于从 arrayIndex 到目标 array 末尾之间的可用空间。

InvalidCastException

无法自动将源 SortedList 的类型转换为目标 array 的类型。

示例

下面的代码示例演示如何将 对象中的 SortedList 值复制到一维 Array 对象中。

using namespace System;
using namespace System::Collections;
void PrintValues( array<DictionaryEntry>^ myArr, Char mySeparator );
int main()
{
   
   // Creates and initializes the source SortedList.
   SortedList^ mySourceList = gcnew SortedList;
   mySourceList->Add( 2, "cats" );
   mySourceList->Add( 3, "in" );
   mySourceList->Add( 1, "napping" );
   mySourceList->Add( 4, "the" );
   mySourceList->Add( 0, "three" );
   mySourceList->Add( 5, "barn" );
   
   // Creates and initializes the one-dimensional target Array.
   array<String^>^tempArray = {"The","quick","brown","fox","jumps","over","the","lazy","dog"};
   array<DictionaryEntry>^myTargetArray = gcnew array<DictionaryEntry>(15);
   int i = 0;
   IEnumerator^ myEnum = tempArray->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      String^ s = safe_cast<String^>(myEnum->Current);
      myTargetArray[ i ].Key = i;
      myTargetArray[ i ].Value = s;
      i++;
   }

   
   // Displays the values of the target Array.
   Console::WriteLine( "The target Array contains the following (before and after copying):" );
   PrintValues( myTargetArray, ' ' );
   
   // Copies the entire source SortedList to the target SortedList, starting at index 6.
   mySourceList->CopyTo( myTargetArray, 6 );
   
   // Displays the values of the target Array.
   PrintValues( myTargetArray, ' ' );
}

void PrintValues( array<DictionaryEntry>^ myArr, Char mySeparator )
{
   for ( int i = 0; i < myArr->Length; i++ )
      Console::Write( "{0}{1}", mySeparator, myArr[ i ].Value );
   Console::WriteLine();
}

/*
This code produces the following output.
 
The target Array contains the following (before and after copying):
 The quick brown fox jumps over the lazy dog      
 The quick brown fox jumps over three napping cats in the barn

*/

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

    public static void Main()  {

       // Creates and initializes the source SortedList.
       SortedList mySourceList = new SortedList();
       mySourceList.Add( 2, "cats" );
       mySourceList.Add( 3, "in" );
       mySourceList.Add( 1, "napping" );
       mySourceList.Add( 4, "the" );
       mySourceList.Add( 0, "three" );
       mySourceList.Add( 5, "barn" );

       // Creates and initializes the one-dimensional target Array.
       String[] tempArray = new String[] { "The", "quick", "brown", "fox", "jumps", "over", "the", "lazy", "dog" };
       DictionaryEntry[] myTargetArray = new DictionaryEntry[15];
       int i = 0;
       foreach ( string s in tempArray )  {
          myTargetArray[i].Key = i;
          myTargetArray[i].Value = s;
          i++;
       }

       // Displays the values of the target Array.
       Console.WriteLine( "The target Array contains the following (before and after copying):" );
       PrintValues( myTargetArray, ' ' );

       // Copies the entire source SortedList to the target SortedList, starting at index 6.
       mySourceList.CopyTo( myTargetArray, 6 );

       // Displays the values of the target Array.
       PrintValues( myTargetArray, ' ' );
    }

    public static void PrintValues( DictionaryEntry[] myArr, char mySeparator )  {
       for ( int i = 0; i < myArr.Length; i++ )
          Console.Write( "{0}{1}", mySeparator, myArr[i].Value );
       Console.WriteLine();
    }
 }


/*
This code produces the following output.

The target Array contains the following (before and after copying):
 The quick brown fox jumps over the lazy dog
 The quick brown fox jumps over three napping cats in the barn

*/

Imports System.Collections

Public Class SamplesSortedList

   Public Shared Sub Main()

      ' Creates and initializes the source SortedList.
      Dim mySourceList As New SortedList()
      mySourceList.Add(2, "cats")
      mySourceList.Add(3, "in")
      mySourceList.Add(1, "napping")
      mySourceList.Add(4, "the")
      mySourceList.Add(0, "three")
      mySourceList.Add(5, "barn")

      ' Creates and initializes the one-dimensional target Array.
      Dim tempArray() As String = {"The", "quick", "brown", "fox", "jumps", "over", "the", "lazy", "dog"}
      Dim myTargetArray(14) As DictionaryEntry
      Dim i As Integer = 0
      Dim s As String
      For Each s In  tempArray
         myTargetArray(i).Key = i
         myTargetArray(i).Value = s
         i += 1
      Next s

      ' Displays the values of the target Array.
      Console.WriteLine("The target Array contains the following (before and after copying):")
      PrintValues(myTargetArray, " "c)

      ' Copies the entire source SortedList to the target SortedList, starting at index 6.
      mySourceList.CopyTo(myTargetArray, 6)

      ' Displays the values of the target Array.
      PrintValues(myTargetArray, " "c)

   End Sub


   Public Shared Sub PrintValues(myArr() As DictionaryEntry, mySeparator As Char)
      Dim i As Integer
      For i = 0 To myArr.Length - 1
         Console.Write("{0}{1}", mySeparator, myArr(i).Value)
      Next i
      Console.WriteLine()
  End Sub

End Class


'This code produces the following output.
' 
'The target Array contains the following (before and after copying):
' The quick brown fox jumps over the lazy dog      
' The quick brown fox jumps over three napping cats in the barn

注解

键/值对将按照枚举器循环访问SortedList对象的顺序复制到 Array 对象。

若要仅复制 中的密钥， SortedList请使用 SortedList.Keys.CopyTo。

若要仅复制 中的 SortedList值，请使用 SortedList.Values.CopyTo。

此方法是一个 O(n) 操作，其中 n 为 Count。

另请参阅

• Array
• DictionaryEntry
• GetEnumerator()