ArrayList.CopyTo 方法
定義
重要
部分資訊涉及發行前產品,在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊,不做任何明確或隱含的瑕疵擔保。
將 ArrayList 或其中一部分複製至一維陣列。
多載
CopyTo(Array) | |
CopyTo(Array, Int32) | |
CopyTo(Int32, Array, Int32, Int32) |
CopyTo(Array)
- 來源:
- ArrayList.cs
- 來源:
- ArrayList.cs
- 來源:
- ArrayList.cs
public:
virtual void CopyTo(Array ^ array);
public virtual void CopyTo (Array array);
abstract member CopyTo : Array -> unit
override this.CopyTo : Array -> unit
Public Overridable Sub CopyTo (array As Array)
參數
例外狀況
array
為 null
。
來源 ArrayList 的類型無法自動轉換成目的 array
的類型。
範例
下列程式代碼範例示範如何將 複製到 ArrayList 一維 System.Array。
using namespace System;
using namespace System::Collections;
void PrintValues( array<String^>^myArr, char mySeparator );
int main()
{
// Creates and initializes the source ArrayList.
ArrayList^ mySourceList = gcnew ArrayList;
mySourceList->Add( "three" );
mySourceList->Add( "napping" );
mySourceList->Add( "cats" );
mySourceList->Add( "in" );
mySourceList->Add( "the" );
mySourceList->Add( "barn" );
// Creates and initializes the one-dimensional target Array.
array<String^>^myTargetArray = gcnew array<String^>(15);
myTargetArray[ 0 ] = "The";
myTargetArray[ 1 ] = "quick";
myTargetArray[ 2 ] = "brown";
myTargetArray[ 3 ] = "fox";
myTargetArray[ 4 ] = "jumps";
myTargetArray[ 5 ] = "over";
myTargetArray[ 6 ] = "the";
myTargetArray[ 7 ] = "lazy";
myTargetArray[ 8 ] = "dog";
// Displays the values of the target Array.
Console::WriteLine( "The target Array contains the following (before and after copying):" );
PrintValues( myTargetArray, ' ' );
// Copies the second element from the source ArrayList to the target ArrayList starting at index 7.
mySourceList->CopyTo( 1, myTargetArray, 7, 1 );
// Displays the values of the target Array.
PrintValues( myTargetArray, ' ' );
// Copies the entire source ArrayList to the target ArrayList starting at index 6.
mySourceList->CopyTo( myTargetArray, 6 );
// Displays the values of the target Array.
PrintValues( myTargetArray, ' ' );
// Copies the entire source ArrayList to the target ArrayList starting at index 0.
mySourceList->CopyTo( myTargetArray );
// Displays the values of the target Array.
PrintValues( myTargetArray, ' ' );
}
void PrintValues( array<String^>^myArr, char mySeparator )
{
for ( int i = 0; i < myArr->Length; i++ )
Console::Write( "{0}{1}", mySeparator, myArr[ i ] );
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 the napping dog
The quick brown fox jumps over three napping cats in the barn
three napping cats in the barn three napping cats in the barn
*/
using System;
using System.Collections;
public class SamplesArrayList {
public static void Main() {
// Creates and initializes the source ArrayList.
ArrayList mySourceList = new ArrayList();
mySourceList.Add( "three" );
mySourceList.Add( "napping" );
mySourceList.Add( "cats" );
mySourceList.Add( "in" );
mySourceList.Add( "the" );
mySourceList.Add( "barn" );
// Creates and initializes the one-dimensional target Array.
String[] myTargetArray = new String[15];
myTargetArray[0] = "The";
myTargetArray[1] = "quick";
myTargetArray[2] = "brown";
myTargetArray[3] = "fox";
myTargetArray[4] = "jumps";
myTargetArray[5] = "over";
myTargetArray[6] = "the";
myTargetArray[7] = "lazy";
myTargetArray[8] = "dog";
// Displays the values of the target Array.
Console.WriteLine( "The target Array contains the following (before and after copying):" );
PrintValues( myTargetArray, ' ' );
// Copies the second element from the source ArrayList to the target Array starting at index 7.
mySourceList.CopyTo( 1, myTargetArray, 7, 1 );
// Displays the values of the target Array.
PrintValues( myTargetArray, ' ' );
// Copies the entire source ArrayList to the target Array starting at index 6.
mySourceList.CopyTo( myTargetArray, 6 );
// Displays the values of the target Array.
PrintValues( myTargetArray, ' ' );
// Copies the entire source ArrayList to the target Array starting at index 0.
mySourceList.CopyTo( myTargetArray );
// Displays the values of the target Array.
PrintValues( myTargetArray, ' ' );
}
public static void PrintValues( String[] myArr, char mySeparator ) {
for ( int i = 0; i < myArr.Length; i++ )
Console.Write( "{0}{1}", mySeparator, myArr[i] );
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 the napping dog
The quick brown fox jumps over three napping cats in the barn
three napping cats in the barn three napping cats in the barn
*/
Imports System.Collections
Public Class SamplesArrayList
Public Shared Sub Main()
' Creates and initializes the source ArrayList.
Dim mySourceList As New ArrayList()
mySourceList.Add("three")
mySourceList.Add("napping")
mySourceList.Add("cats")
mySourceList.Add("in")
mySourceList.Add("the")
mySourceList.Add("barn")
' Creates and initializes the one-dimensional target Array.
Dim myTargetArray(14) As String
myTargetArray(0) = "The"
myTargetArray(1) = "quick"
myTargetArray(2) = "brown"
myTargetArray(3) = "fox"
myTargetArray(4) = "jumps"
myTargetArray(5) = "over"
myTargetArray(6) = "the"
myTargetArray(7) = "lazy"
myTargetArray(8) = "dog"
' Displays the values of the target Array.
Console.WriteLine("The target Array contains the following " _
+ "(before and after copying):")
PrintValues(myTargetArray, " "c)
' Copies the second element from the source ArrayList to the target
' Array starting at index 7.
mySourceList.CopyTo(1, myTargetArray, 7, 1)
' Displays the values of the target Array.
PrintValues(myTargetArray, " "c)
' Copies the entire source ArrayList to the target Array starting
' at index 6.
mySourceList.CopyTo(myTargetArray, 6)
' Displays the values of the target Array.
PrintValues(myTargetArray, " "c)
' Copies the entire source ArrayList to the target Array starting
' at index 0.
mySourceList.CopyTo(myTargetArray)
' Displays the values of the target Array.
PrintValues(myTargetArray, " "c)
End Sub
Public Shared Sub PrintValues(myArr() As String, mySeparator As Char)
Dim i As Integer
For i = 0 To myArr.Length - 1
Console.Write("{0}{1}", mySeparator, myArr(i))
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 the napping dog
' The quick brown fox jumps over three napping cats in the barn
' three napping cats in the barn three napping cats in the barn
備註
指定的陣列必須是相容的類型。
這個方法會使用 Array.Copy 來複製專案。
元素會以逐一查看 ArrayList的相同順序複製到 Array 。
這個方法是作業 O(n)
,其中 n
是 Count。
適用於
CopyTo(Array, Int32)
- 來源:
- ArrayList.cs
- 來源:
- ArrayList.cs
- 來源:
- ArrayList.cs
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)
參數
- arrayIndex
- Int32
array
中以零起始的索引,即開始複製的位置。
實作
例外狀況
array
為 null
。
arrayIndex
小於零。
來源 ArrayList 的類型無法自動轉換成目的 array
的類型。
範例
下列程式代碼範例示範如何將 複製到 ArrayList 一維 System.Array。
using namespace System;
using namespace System::Collections;
void PrintValues( array<String^>^myArr, char mySeparator );
int main()
{
// Creates and initializes the source ArrayList.
ArrayList^ mySourceList = gcnew ArrayList;
mySourceList->Add( "three" );
mySourceList->Add( "napping" );
mySourceList->Add( "cats" );
mySourceList->Add( "in" );
mySourceList->Add( "the" );
mySourceList->Add( "barn" );
// Creates and initializes the one-dimensional target Array.
array<String^>^myTargetArray = gcnew array<String^>(15);
myTargetArray[ 0 ] = "The";
myTargetArray[ 1 ] = "quick";
myTargetArray[ 2 ] = "brown";
myTargetArray[ 3 ] = "fox";
myTargetArray[ 4 ] = "jumps";
myTargetArray[ 5 ] = "over";
myTargetArray[ 6 ] = "the";
myTargetArray[ 7 ] = "lazy";
myTargetArray[ 8 ] = "dog";
// Displays the values of the target Array.
Console::WriteLine( "The target Array contains the following (before and after copying):" );
PrintValues( myTargetArray, ' ' );
// Copies the second element from the source ArrayList to the target Array, starting at index 7.
mySourceList->CopyTo( 1, myTargetArray, 7, 1 );
// Displays the values of the target Array.
PrintValues( myTargetArray, ' ' );
// Copies the entire source ArrayList to the target Array, starting at index 6.
mySourceList->CopyTo( myTargetArray, 6 );
// Displays the values of the target Array.
PrintValues( myTargetArray, ' ' );
// Copies the entire source ArrayList to the target Array, starting at index 0.
mySourceList->CopyTo( myTargetArray );
// Displays the values of the target Array.
PrintValues( myTargetArray, ' ' );
}
void PrintValues( array<String^>^myArr, char mySeparator )
{
for ( int i = 0; i < myArr->Length; i++ )
Console::Write( "{0}{1}", mySeparator, myArr[ i ] );
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 the napping dog
The quick brown fox jumps over three napping cats in the barn
three napping cats in the barn three napping cats in the barn
*/
using System;
using System.Collections;
public class SamplesArrayList1 {
public static void Main() {
// Creates and initializes the source ArrayList.
ArrayList mySourceList = new ArrayList();
mySourceList.Add( "three" );
mySourceList.Add( "napping" );
mySourceList.Add( "cats" );
mySourceList.Add( "in" );
mySourceList.Add( "the" );
mySourceList.Add( "barn" );
// Creates and initializes the one-dimensional target Array.
String[] myTargetArray = new String[15];
myTargetArray[0] = "The";
myTargetArray[1] = "quick";
myTargetArray[2] = "brown";
myTargetArray[3] = "fox";
myTargetArray[4] = "jumps";
myTargetArray[5] = "over";
myTargetArray[6] = "the";
myTargetArray[7] = "lazy";
myTargetArray[8] = "dog";
// Displays the values of the target Array.
Console.WriteLine( "The target Array contains the following (before and after copying):" );
PrintValues( myTargetArray, ' ' );
// Copies the second element from the source ArrayList to the target Array, starting at index 7.
mySourceList.CopyTo( 1, myTargetArray, 7, 1 );
// Displays the values of the target Array.
PrintValues( myTargetArray, ' ' );
// Copies the entire source ArrayList to the target Array, starting at index 6.
mySourceList.CopyTo( myTargetArray, 6 );
// Displays the values of the target Array.
PrintValues( myTargetArray, ' ' );
// Copies the entire source ArrayList to the target Array, starting at index 0.
mySourceList.CopyTo( myTargetArray );
// Displays the values of the target Array.
PrintValues( myTargetArray, ' ' );
}
public static void PrintValues( String[] myArr, char mySeparator ) {
for ( int i = 0; i < myArr.Length; i++ )
Console.Write( "{0}{1}", mySeparator, myArr[i] );
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 the napping dog
The quick brown fox jumps over three napping cats in the barn
three napping cats in the barn three napping cats in the barn
*/
Imports System.Collections
Public Class SamplesArrayList
Public Shared Sub Main()
' Creates and initializes the source ArrayList.
Dim mySourceList As New ArrayList()
mySourceList.Add("three")
mySourceList.Add("napping")
mySourceList.Add("cats")
mySourceList.Add("in")
mySourceList.Add("the")
mySourceList.Add("barn")
' Creates and initializes the one-dimensional target Array.
Dim myTargetArray(14) As String
myTargetArray(0) = "The"
myTargetArray(1) = "quick"
myTargetArray(2) = "brown"
myTargetArray(3) = "fox"
myTargetArray(4) = "jumps"
myTargetArray(5) = "over"
myTargetArray(6) = "the"
myTargetArray(7) = "lazy"
myTargetArray(8) = "dog"
' Displays the values of the target Array.
Console.WriteLine("The target Array contains the following (before and after copying):")
PrintValues(myTargetArray, " "c)
' Copies the second element from the source ArrayList to the target Array, starting at index 7.
mySourceList.CopyTo(1, myTargetArray, 7, 1)
' Displays the values of the target Array.
PrintValues(myTargetArray, " "c)
' Copies the entire source ArrayList to the target Array, starting at index 6.
mySourceList.CopyTo(myTargetArray, 6)
' Displays the values of the target Array.
PrintValues(myTargetArray, " "c)
' Copies the entire source ArrayList to the target Array, starting at index 0.
mySourceList.CopyTo(myTargetArray)
' Displays the values of the target Array.
PrintValues(myTargetArray, " "c)
End Sub
Public Shared Sub PrintValues(myArr() As String, mySeparator As Char)
Dim i As Integer
For i = 0 To myArr.Length - 1
Console.Write("{0}{1}", mySeparator, myArr(i))
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 the napping dog
' The quick brown fox jumps over three napping cats in the barn
' three napping cats in the barn three napping cats in the barn
備註
指定的陣列必須是相容的類型。
這個方法會使用 Array.Copy 來複製專案。
元素會以逐一查看 ArrayList的相同順序複製到 Array 。
這個方法是作業 O(n)
,其中 n
是 Count。
適用於
CopyTo(Int32, Array, Int32, Int32)
- 來源:
- ArrayList.cs
- 來源:
- ArrayList.cs
- 來源:
- ArrayList.cs
public:
virtual void CopyTo(int index, Array ^ array, int arrayIndex, int count);
public virtual void CopyTo (int index, Array array, int arrayIndex, int count);
abstract member CopyTo : int * Array * int * int -> unit
override this.CopyTo : int * Array * int * int -> unit
Public Overridable Sub CopyTo (index As Integer, array As Array, arrayIndex As Integer, count As Integer)
參數
- arrayIndex
- Int32
array
中以零起始的索引,即開始複製的位置。
- count
- Int32
要複製的項目數目。
例外狀況
array
為 null
。
array
是多維的。
-或-
index
等於或大於來源 ArrayList 的 Count。
-或-
從 index
到來源 ArrayList 結尾的項目數目,大於從 arrayIndex
到目的 array
結尾的可用空間。
來源 ArrayList 的類型無法自動轉換成目的 array
的類型。
範例
下列程式代碼範例示範如何將 複製到 ArrayList 一維 System.Array。
using namespace System;
using namespace System::Collections;
void PrintValues( array<String^>^myArr, char mySeparator );
int main()
{
// Creates and initializes the source ArrayList.
ArrayList^ mySourceList = gcnew ArrayList;
mySourceList->Add( "three" );
mySourceList->Add( "napping" );
mySourceList->Add( "cats" );
mySourceList->Add( "in" );
mySourceList->Add( "the" );
mySourceList->Add( "barn" );
// Creates and initializes the one-dimensional target Array.
array<String^>^myTargetArray = gcnew array<String^>(15);
myTargetArray[ 0 ] = "The";
myTargetArray[ 1 ] = "quick";
myTargetArray[ 2 ] = "brown";
myTargetArray[ 3 ] = "fox";
myTargetArray[ 4 ] = "jumps";
myTargetArray[ 5 ] = "over";
myTargetArray[ 6 ] = "the";
myTargetArray[ 7 ] = "lazy";
myTargetArray[ 8 ] = "dog";
// Displays the values of the target Array.
Console::WriteLine( "The target Array contains the following (before and after copying):" );
PrintValues( myTargetArray, ' ' );
// Copies the second element from the source ArrayList to the target Array, starting at index 7.
mySourceList->CopyTo( 1, myTargetArray, 7, 1 );
// Displays the values of the target Array.
PrintValues( myTargetArray, ' ' );
// Copies the entire source ArrayList to the target Array, starting at index 6.
mySourceList->CopyTo( myTargetArray, 6 );
// Displays the values of the target Array.
PrintValues( myTargetArray, ' ' );
// Copies the entire source ArrayList to the target Array, starting at index 0.
mySourceList->CopyTo( myTargetArray );
// Displays the values of the target Array.
PrintValues( myTargetArray, ' ' );
}
void PrintValues( array<String^>^myArr, char mySeparator )
{
for ( int i = 0; i < myArr->Length; i++ )
Console::Write( "{0}{1}", mySeparator, myArr[ i ] );
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 the napping dog
The quick brown fox jumps over three napping cats in the barn
three napping cats in the barn three napping cats in the barn
*/
using System;
using System.Collections;
public class SamplesArrayList1 {
public static void Main() {
// Creates and initializes the source ArrayList.
ArrayList mySourceList = new ArrayList();
mySourceList.Add( "three" );
mySourceList.Add( "napping" );
mySourceList.Add( "cats" );
mySourceList.Add( "in" );
mySourceList.Add( "the" );
mySourceList.Add( "barn" );
// Creates and initializes the one-dimensional target Array.
String[] myTargetArray = new String[15];
myTargetArray[0] = "The";
myTargetArray[1] = "quick";
myTargetArray[2] = "brown";
myTargetArray[3] = "fox";
myTargetArray[4] = "jumps";
myTargetArray[5] = "over";
myTargetArray[6] = "the";
myTargetArray[7] = "lazy";
myTargetArray[8] = "dog";
// Displays the values of the target Array.
Console.WriteLine( "The target Array contains the following (before and after copying):" );
PrintValues( myTargetArray, ' ' );
// Copies the second element from the source ArrayList to the target Array, starting at index 7.
mySourceList.CopyTo( 1, myTargetArray, 7, 1 );
// Displays the values of the target Array.
PrintValues( myTargetArray, ' ' );
// Copies the entire source ArrayList to the target Array, starting at index 6.
mySourceList.CopyTo( myTargetArray, 6 );
// Displays the values of the target Array.
PrintValues( myTargetArray, ' ' );
// Copies the entire source ArrayList to the target Array, starting at index 0.
mySourceList.CopyTo( myTargetArray );
// Displays the values of the target Array.
PrintValues( myTargetArray, ' ' );
}
public static void PrintValues( String[] myArr, char mySeparator ) {
for ( int i = 0; i < myArr.Length; i++ )
Console.Write( "{0}{1}", mySeparator, myArr[i] );
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 the napping dog
The quick brown fox jumps over three napping cats in the barn
three napping cats in the barn three napping cats in the barn
*/
Imports System.Collections
Public Class SamplesArrayList
Public Shared Sub Main()
' Creates and initializes the source ArrayList.
Dim mySourceList As New ArrayList()
mySourceList.Add("three")
mySourceList.Add("napping")
mySourceList.Add("cats")
mySourceList.Add("in")
mySourceList.Add("the")
mySourceList.Add("barn")
' Creates and initializes the one-dimensional target Array.
Dim myTargetArray(14) As String
myTargetArray(0) = "The"
myTargetArray(1) = "quick"
myTargetArray(2) = "brown"
myTargetArray(3) = "fox"
myTargetArray(4) = "jumps"
myTargetArray(5) = "over"
myTargetArray(6) = "the"
myTargetArray(7) = "lazy"
myTargetArray(8) = "dog"
' Displays the values of the target Array.
Console.WriteLine("The target Array contains the following (before and after copying):")
PrintValues(myTargetArray, " "c)
' Copies the second element from the source ArrayList to the target Array, starting at index 7.
mySourceList.CopyTo(1, myTargetArray, 7, 1)
' Displays the values of the target Array.
PrintValues(myTargetArray, " "c)
' Copies the entire source ArrayList to the target Array, starting at index 6.
mySourceList.CopyTo(myTargetArray, 6)
' Displays the values of the target Array.
PrintValues(myTargetArray, " "c)
' Copies the entire source ArrayList to the target Array, starting at index 0.
mySourceList.CopyTo(myTargetArray)
' Displays the values of the target Array.
PrintValues(myTargetArray, " "c)
End Sub
Public Shared Sub PrintValues(myArr() As String, mySeparator As Char)
Dim i As Integer
For i = 0 To myArr.Length - 1
Console.Write("{0}{1}", mySeparator, myArr(i))
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 the napping dog
' The quick brown fox jumps over three napping cats in the barn
' three napping cats in the barn three napping cats in the barn
備註
指定的陣列必須是相容的類型。
這個方法會使用 Array.Copy 來複製專案。
元素會以逐一查看 ArrayList的相同順序複製到 Array 。
這個方法是作業 O(n)
,其中 n
是 count
。