Array.CopyTo メソッド

定義

現在の 1 次元配列のすべての要素を、指定した 1 次元配列にコピーします。Copies all the elements of the current one-dimensional array to the specified one-dimensional array.

オーバーロード

CopyTo(Array, Int32)

現在の 1 次元配列のすべての要素を、指定したコピー先配列インデックスで開始する指定の 1 次元配列にコピーします。Copies all the elements of the current one-dimensional array to the specified one-dimensional array starting at the specified destination array index. インデックスは 32 ビット整数値として指定します。The index is specified as a 32-bit integer.

CopyTo(Array, Int64)

現在の 1 次元配列のすべての要素を、指定したコピー先配列インデックスで開始する指定の 1 次元配列にコピーします。Copies all the elements of the current one-dimensional array to the specified one-dimensional array starting at the specified destination array index. インデックスは 64 ビット整数値として指定します。The index is specified as a 64-bit integer.

CopyTo(Array, Int32)

現在の 1 次元配列のすべての要素を、指定したコピー先配列インデックスで開始する指定の 1 次元配列にコピーします。Copies all the elements of the current one-dimensional array to the specified one-dimensional array starting at the specified destination array index. インデックスは 32 ビット整数値として指定します。The index is specified as a 32-bit integer.

public:
 virtual void CopyTo(Array ^ array, int index);
public void CopyTo (Array array, int index);
public virtual void CopyTo (Array array, int index);
abstract member CopyTo : Array * int -> unit
override this.CopyTo : Array * int -> unit

パラメーター

array
Array

現在の配列からコピーされる要素のコピー先である 1 次元配列。The one-dimensional array that is the destination of the elements copied from the current array.

index
Int32

コピーを開始する array のインデックスを表す 32 ビット整数。A 32-bit integer that represents the index in array at which copying begins.

実装

例外

arraynull です。array is null.

index は、array の下限を下回っています。index is less than the lower bound of array.

array が多次元です。array is multidimensional.

または-or- コピー元配列の要素数が、コピー先 indexarray から末尾までの使用可能な要素数を超えています。The number of elements in the source array is greater than the available number of elements from index to the end of the destination array.

コピー元の Array の型をコピー先の array の型に自動的にキャストすることはできません。The type of the source Array cannot be cast automatically to the type of the destination array.

ソース配列が多次元配列です。The source array is multidimensional.

コピー元 Array の中の少なくとも 1 つの要素を、コピー先 array の型にキャストすることができません。At least one element in the source Array cannot be cast to the type of destination array.

次のコード例は、Array を別の Arrayにコピーする方法を示しています。The following code example shows how to copy an Array to another Array.

using namespace System;
void main1();
void main2();
void main()
{
   main1();
   Console::WriteLine();
   main2();
}

void PrintValues( Array^ myArr );
void main1()
{
   // Creates and initializes two new Array instances.
   Array^ mySourceArray = Array::CreateInstance( String::typeid, 6 );
   mySourceArray->SetValue( "three", 0 );
   mySourceArray->SetValue( "napping", 1 );
   mySourceArray->SetValue( "cats", 2 );
   mySourceArray->SetValue( "in", 3 );
   mySourceArray->SetValue( "the", 4 );
   mySourceArray->SetValue( "barn", 5 );
   Array^ myTargetArray = Array::CreateInstance( String::typeid, 15 );
   myTargetArray->SetValue( "The", 0 );
   myTargetArray->SetValue( "quick", 1 );
   myTargetArray->SetValue( "brown", 2 );
   myTargetArray->SetValue( "fox", 3 );
   myTargetArray->SetValue( "jumps", 4 );
   myTargetArray->SetValue( "over", 5 );
   myTargetArray->SetValue( "the", 6 );
   myTargetArray->SetValue( "lazy", 7 );
   myTargetArray->SetValue( "dog", 8 );

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

   // Copies the source Array to the target Array, starting at index 6.
   mySourceArray->CopyTo( myTargetArray, 6 );

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

void PrintValues( Array^ myArr )
{
   System::Collections::IEnumerator^ myEnumerator = myArr->GetEnumerator();
   int i = 0;
   int cols = myArr->GetLength( myArr->Rank - 1 );
   while ( myEnumerator->MoveNext() )
   {
      if ( i < cols )
      {
         i++;
      }
      else
      {
         Console::WriteLine();
         i = 1;
      }

      Console::Write(  " {0}", myEnumerator->Current );
   }

   Console::WriteLine();
}


/*
 This code produces the following output.
 
  The target Array instance 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;
public class SamplesArray  {

   public static void Main()  {

      // Creates and initializes two new Arrays.
      Array mySourceArray=Array.CreateInstance( typeof(String), 6 );
      mySourceArray.SetValue( "three", 0 );
      mySourceArray.SetValue( "napping", 1 );
      mySourceArray.SetValue( "cats", 2 );
      mySourceArray.SetValue( "in", 3 );
      mySourceArray.SetValue( "the", 4 );
      mySourceArray.SetValue( "barn", 5 );
      Array myTargetArray=Array.CreateInstance( typeof(String), 15 );
      myTargetArray.SetValue( "The", 0 );
      myTargetArray.SetValue( "quick", 1 );
      myTargetArray.SetValue( "brown", 2 );
      myTargetArray.SetValue( "fox", 3 );
      myTargetArray.SetValue( "jumps", 4 );
      myTargetArray.SetValue( "over", 5 );
      myTargetArray.SetValue( "the", 6 );
      myTargetArray.SetValue( "lazy", 7 );
      myTargetArray.SetValue( "dog", 8 );

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

      // Copies the source Array to the target Array, starting at index 6.
      mySourceArray.CopyTo( myTargetArray, 6 );

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

   public static void PrintValues( Array myArr, char mySeparator )  {
      System.Collections.IEnumerator myEnumerator = myArr.GetEnumerator();
      int i = 0;
      int cols = myArr.GetLength( myArr.Rank - 1 );
      while ( myEnumerator.MoveNext() )  {
         if ( i < cols )  {
            i++;
         } else  {
            Console.WriteLine();
            i = 1;
         }
         Console.Write( "{0}{1}", mySeparator, myEnumerator.Current );
      }
      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
*/
Public Class SamplesArray    
    
    Public Shared Sub Main()
        
        ' Creates and initializes two new Arrays.
        Dim mySourceArray As Array = Array.CreateInstance(GetType(String), 6)
        mySourceArray.SetValue("three", 0)
        mySourceArray.SetValue("napping", 1)
        mySourceArray.SetValue("cats", 2)
        mySourceArray.SetValue("in", 3)
        mySourceArray.SetValue("the", 4)
        mySourceArray.SetValue("barn", 5)
        Dim myTargetArray As Array = Array.CreateInstance(GetType(String), 15)
        myTargetArray.SetValue("The", 0)
        myTargetArray.SetValue("quick", 1)
        myTargetArray.SetValue("brown", 2)
        myTargetArray.SetValue("fox", 3)
        myTargetArray.SetValue("jumps", 4)
        myTargetArray.SetValue("over", 5)
        myTargetArray.SetValue("the", 6)
        myTargetArray.SetValue("lazy", 7)
        myTargetArray.SetValue("dog", 8)
        
        ' Displays the values of the Array.
        Console.WriteLine("The target Array contains the following" _
           & "(before and after copying):")
        PrintValues(myTargetArray, " "c)
        
        ' Copies the source Array to the target Array, starting at index 6.
        mySourceArray.CopyTo(myTargetArray, 6)
        
        ' Displays the values of the Array.
        PrintValues(myTargetArray, " "c)
    End Sub    
    
    Public Shared Sub PrintValues(myArr As Array, mySeparator As Char)
        Dim myEnumerator As System.Collections.IEnumerator = _
           myArr.GetEnumerator()
        Dim i As Integer = 0
        Dim cols As Integer = myArr.GetLength((myArr.Rank - 1))
        While myEnumerator.MoveNext()
            If i < cols Then
                i += 1
            Else
                Console.WriteLine()
                i = 1
            End If
            Console.Write("{0}{1}", mySeparator, myEnumerator.Current)
        End While
        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

次のコード例は、0以外の下限を持つ別の ArrayArray をコピーする方法を示しています。The following code example shows how to copy an Array to another Array with a nonzero lower bound. ターゲット Array内の既存の要素を上書きする空の要素を含めて、ソース Array 全体がコピーされることに注意してください。Note that the entire source Array is copied, including empty elements that overwrite existing elements in the target Array.

void PrintIndexAndValues( Array^ myArray );
void main2()
{
   // Creates and initializes the source Array.
   Array^ myArrayZero = Array::CreateInstance( String::typeid, 3 );
   myArrayZero->SetValue( "zero", 0 );
   myArrayZero->SetValue( "one", 1 );

   // Displays the source Array.
   Console::WriteLine(  "The array with lowbound=0 contains:" );
   PrintIndexAndValues( myArrayZero );

   // Creates and initializes the target Array.
   array<int>^myArrLen = {4};
   array<int>^myArrLow = {2};
   Array^ myArrayTwo = Array::CreateInstance( String::typeid, myArrLen, myArrLow );
   myArrayTwo->SetValue( "two", 2 );
   myArrayTwo->SetValue( "three", 3 );
   myArrayTwo->SetValue( "four", 4 );
   myArrayTwo->SetValue( "five", 5 );

   // Displays the target Array.
   Console::WriteLine(  "The array with lowbound=2 contains:" );
   PrintIndexAndValues( myArrayTwo );

   // Copy from the array with lowbound=0 to the array with lowbound=2.
   myArrayZero->CopyTo( myArrayTwo, 3 );

   // Displays the modified target Array.
   Console::WriteLine(  "\nAfter copying at relative index 1:" );
   PrintIndexAndValues( myArrayTwo );
}

void PrintIndexAndValues( Array^ myArray )
{
   for ( int i = myArray->GetLowerBound( 0 ); i <= myArray->GetUpperBound( 0 ); i++ )
      Console::WriteLine(  "\t[{0}]:\t{1}", i, myArray->GetValue( i ) );
}

/* 
 This code produces the following output.
 
 The array with lowbound=0 contains:
     [0]:    zero
     [1]:    one
     [2]:    
 The array with lowbound=2 contains:
     [2]:    two
     [3]:    three
     [4]:    four
     [5]:    five
 
 After copying at relative index 1:
     [2]:    two
     [3]:    zero
     [4]:    one
     [5]:
 */
public class SamplesArray2{

   public static void Main()  {
      // Creates and initializes the source Array.
      Array myArrayZero=Array.CreateInstance( typeof(String), 3 );
      myArrayZero.SetValue( "zero", 0 );
      myArrayZero.SetValue( "one", 1 );

      // Displays the source Array.
      Console.WriteLine( "The array with lower bound=0 contains:" );
      PrintIndexAndValues( myArrayZero );

      // Creates and initializes the target Array.
      int[] myArrLen = { 4 };
      int[] myArrLow = { 2 };
      Array myArrayTwo=Array.CreateInstance( typeof(String), myArrLen, myArrLow );
      myArrayTwo.SetValue( "two", 2 );
      myArrayTwo.SetValue( "three", 3 );
      myArrayTwo.SetValue( "four", 4 );
      myArrayTwo.SetValue( "five", 5 );

      // Displays the target Array.
      Console.WriteLine( "The array with lower bound=2 contains:" );
      PrintIndexAndValues( myArrayTwo );

      // Copies from the array with lower bound=0 to the array with lower bound=2.
      myArrayZero.CopyTo( myArrayTwo, 3 );

      // Displays the modified target Array.
      Console.WriteLine( "\nAfter copying to the target array from index 3:" );
      PrintIndexAndValues( myArrayTwo );
   }

   public static void PrintIndexAndValues( Array myArray )  {
      for ( int i = myArray.GetLowerBound(0); i <= myArray.GetUpperBound(0); i++ )
         Console.WriteLine( "\t[{0}]:\t{1}", i, myArray.GetValue( i ) );
   }
}
/* 
This code produces the following output.

The array with lower bound=0 contains:
    [0]:    zero
    [1]:    one
    [2]:    
The array with lower bound=2 contains:
    [2]:    two
    [3]:    three
    [4]:    four
    [5]:    five

After copying to the target array from index 3:
    [2]:    two
    [3]:    zero
    [4]:    one
    [5]:
*/
Public Class SamplesArray2    
    
    Public Shared Sub Main()
        ' Creates and initializes the source Array.
        Dim myArrayZero As Array = Array.CreateInstance(GetType(String), 3)
        myArrayZero.SetValue("zero", 0)
        myArrayZero.SetValue("one", 1)
        
        ' Displays the source Array.
        Console.WriteLine("The array with lower bound=0 contains:")
        PrintIndexAndValues(myArrayZero)
        
        ' Creates and initializes the target Array.
        Dim myArrLen As Integer() = {4}
        Dim myArrLow As Integer() = {2}
        Dim myArrayTwo As Array = Array.CreateInstance(GetType(String), _
           myArrLen, myArrLow)
        myArrayTwo.SetValue("two", 2)
        myArrayTwo.SetValue("three", 3)
        myArrayTwo.SetValue("four", 4)
        myArrayTwo.SetValue("five", 5)
        
        ' Displays the target Array.
        Console.WriteLine("The array with lower bound=2 contains:")
        PrintIndexAndValues(myArrayTwo)
        
        ' Copies from the array with lower bound=0 to the array with lower bound=2.
        myArrayZero.CopyTo(myArrayTwo, 3)
        
        ' Displays the modified target Array.
        Console.WriteLine(ControlChars.Cr + "After copying to the target array from " _
           + "index 3:")
        PrintIndexAndValues(myArrayTwo)
    End Sub
    
    Public Shared Sub PrintIndexAndValues(myArray As Array)
        Dim i As Integer
        For i = myArray.GetLowerBound(0) To myArray.GetUpperBound(0)
            Console.WriteLine(ControlChars.Tab + "[{0}]:" + ControlChars.Tab _
               + "{1}", i, myArray.GetValue(i))
        Next i
    End Sub
End Class

' This code produces the following output.
' 
' The array with lower bound=0 contains:
'     [0]:    zero
'     [1]:    one
'     [2]:    
' The array with lower bound=2 contains:
'     [2]:    two
'     [3]:    three
'     [4]:    four
'     [5]:    five
' 
' After copying to the target array from index 3:
'     [2]:    two
'     [3]:    zero
'     [4]:    one
'     [5]: 

注釈

このメソッドは、インデックス indexを開始位置として、現在の配列インスタンスのすべての要素を array コピー先の配列にコピーします。This method copies all the elements of the current array instance to the array destination array, starting at index index. array のコピー先の配列は、既に次元が設定されている必要があります。コピーされた要素を格納するには、十分な数の要素が必要です。The array destination array must already have been dimensioned and must have a sufficient number of elements to accommodate the copied elements. そうしないと、例外がスローされます。Otherwise, the method throws an exception.

このメソッドは、System.Collections.ICollection インターフェイスをサポートしています。This method supports the System.Collections.ICollection interface. System.Collections.ICollection を実装する必要がない場合は、Copy を使用して追加の間接参照を回避します。If implementing System.Collections.ICollection is not explicitly required, use Copy to avoid an extra indirection.

コピー中にこのメソッドが例外をスローした場合、array の状態は未定義になります。If this method throws an exception while copying, the state of array is undefined.

このメソッドは O (n) 操作であり、nLengthます。簡易コピーのみを実行します。This method is an O(n) operation, where n is Length.It performs a shallow copy only.

こちらもご覧ください

CopyTo(Array, Int64)

現在の 1 次元配列のすべての要素を、指定したコピー先配列インデックスで開始する指定の 1 次元配列にコピーします。Copies all the elements of the current one-dimensional array to the specified one-dimensional array starting at the specified destination array index. インデックスは 64 ビット整数値として指定します。The index is specified as a 64-bit integer.

public:
 void CopyTo(Array ^ array, long index);
public:
 virtual void CopyTo(Array ^ array, long index);
public void CopyTo (Array array, long index);
[System.Runtime.InteropServices.ComVisible(false)]
public virtual void CopyTo (Array array, long index);
[System.Runtime.InteropServices.ComVisible(false)]
public void CopyTo (Array array, long index);
member this.CopyTo : Array * int64 -> unit
abstract member CopyTo : Array * int64 -> unit
override this.CopyTo : Array * int64 -> unit

パラメーター

array
Array

現在の配列からコピーされる要素のコピー先である 1 次元配列。The one-dimensional array that is the destination of the elements copied from the current array.

index
Int64

array 内でコピーが開始するインデックスを表す 64 ビットの整数。A 64-bit integer that represents the index in array at which copying begins.

属性

例外

arraynull です。array is null.

indexarray の有効なインデックスの範囲外です。index is outside the range of valid indexes for array.

array が多次元です。array is multidimensional.

または-or- コピー元配列の要素数が、コピー先 indexarray から末尾までの使用可能な要素数を超えています。The number of elements in the source array is greater than the available number of elements from index to the end of the destination array.

コピー元の Array の型をコピー先の array の型に自動的にキャストすることはできません。The type of the source Array cannot be cast automatically to the type of the destination array.

コピー元の Array が多次元です。The source Array is multidimensional.

コピー元 Array の中の少なくとも 1 つの要素を、コピー先 array の型にキャストすることができません。At least one element in the source Array cannot be cast to the type of destination array.

次のコード例は、Array を別の Arrayにコピーする方法を示しています。The following code example shows how to copy an Array to another Array.

using namespace System;
void main1();
void main2();
void main()
{
   main1();
   Console::WriteLine();
   main2();
}

void PrintValues( Array^ myArr );
void main1()
{
   // Creates and initializes two new Array instances.
   Array^ mySourceArray = Array::CreateInstance( String::typeid, 6 );
   mySourceArray->SetValue( "three", 0 );
   mySourceArray->SetValue( "napping", 1 );
   mySourceArray->SetValue( "cats", 2 );
   mySourceArray->SetValue( "in", 3 );
   mySourceArray->SetValue( "the", 4 );
   mySourceArray->SetValue( "barn", 5 );
   Array^ myTargetArray = Array::CreateInstance( String::typeid, 15 );
   myTargetArray->SetValue( "The", 0 );
   myTargetArray->SetValue( "quick", 1 );
   myTargetArray->SetValue( "brown", 2 );
   myTargetArray->SetValue( "fox", 3 );
   myTargetArray->SetValue( "jumps", 4 );
   myTargetArray->SetValue( "over", 5 );
   myTargetArray->SetValue( "the", 6 );
   myTargetArray->SetValue( "lazy", 7 );
   myTargetArray->SetValue( "dog", 8 );

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

   // Copies the source Array to the target Array, starting at index 6.
   mySourceArray->CopyTo( myTargetArray, 6 );

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

void PrintValues( Array^ myArr )
{
   System::Collections::IEnumerator^ myEnumerator = myArr->GetEnumerator();
   int i = 0;
   int cols = myArr->GetLength( myArr->Rank - 1 );
   while ( myEnumerator->MoveNext() )
   {
      if ( i < cols )
      {
         i++;
      }
      else
      {
         Console::WriteLine();
         i = 1;
      }

      Console::Write(  " {0}", myEnumerator->Current );
   }

   Console::WriteLine();
}


/*
 This code produces the following output.
 
  The target Array instance 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;
public class SamplesArray  {

   public static void Main()  {

      // Creates and initializes two new Arrays.
      Array mySourceArray=Array.CreateInstance( typeof(String), 6 );
      mySourceArray.SetValue( "three", 0 );
      mySourceArray.SetValue( "napping", 1 );
      mySourceArray.SetValue( "cats", 2 );
      mySourceArray.SetValue( "in", 3 );
      mySourceArray.SetValue( "the", 4 );
      mySourceArray.SetValue( "barn", 5 );
      Array myTargetArray=Array.CreateInstance( typeof(String), 15 );
      myTargetArray.SetValue( "The", 0 );
      myTargetArray.SetValue( "quick", 1 );
      myTargetArray.SetValue( "brown", 2 );
      myTargetArray.SetValue( "fox", 3 );
      myTargetArray.SetValue( "jumps", 4 );
      myTargetArray.SetValue( "over", 5 );
      myTargetArray.SetValue( "the", 6 );
      myTargetArray.SetValue( "lazy", 7 );
      myTargetArray.SetValue( "dog", 8 );

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

      // Copies the source Array to the target Array, starting at index 6.
      mySourceArray.CopyTo( myTargetArray, 6 );

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

   public static void PrintValues( Array myArr, char mySeparator )  {
      System.Collections.IEnumerator myEnumerator = myArr.GetEnumerator();
      int i = 0;
      int cols = myArr.GetLength( myArr.Rank - 1 );
      while ( myEnumerator.MoveNext() )  {
         if ( i < cols )  {
            i++;
         } else  {
            Console.WriteLine();
            i = 1;
         }
         Console.Write( "{0}{1}", mySeparator, myEnumerator.Current );
      }
      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
*/
Public Class SamplesArray    
    
    Public Shared Sub Main()
        
        ' Creates and initializes two new Arrays.
        Dim mySourceArray As Array = Array.CreateInstance(GetType(String), 6)
        mySourceArray.SetValue("three", 0)
        mySourceArray.SetValue("napping", 1)
        mySourceArray.SetValue("cats", 2)
        mySourceArray.SetValue("in", 3)
        mySourceArray.SetValue("the", 4)
        mySourceArray.SetValue("barn", 5)
        Dim myTargetArray As Array = Array.CreateInstance(GetType(String), 15)
        myTargetArray.SetValue("The", 0)
        myTargetArray.SetValue("quick", 1)
        myTargetArray.SetValue("brown", 2)
        myTargetArray.SetValue("fox", 3)
        myTargetArray.SetValue("jumps", 4)
        myTargetArray.SetValue("over", 5)
        myTargetArray.SetValue("the", 6)
        myTargetArray.SetValue("lazy", 7)
        myTargetArray.SetValue("dog", 8)
        
        ' Displays the values of the Array.
        Console.WriteLine("The target Array contains the following" _
           & "(before and after copying):")
        PrintValues(myTargetArray, " "c)
        
        ' Copies the source Array to the target Array, starting at index 6.
        mySourceArray.CopyTo(myTargetArray, 6)
        
        ' Displays the values of the Array.
        PrintValues(myTargetArray, " "c)
    End Sub    
    
    Public Shared Sub PrintValues(myArr As Array, mySeparator As Char)
        Dim myEnumerator As System.Collections.IEnumerator = _
           myArr.GetEnumerator()
        Dim i As Integer = 0
        Dim cols As Integer = myArr.GetLength((myArr.Rank - 1))
        While myEnumerator.MoveNext()
            If i < cols Then
                i += 1
            Else
                Console.WriteLine()
                i = 1
            End If
            Console.Write("{0}{1}", mySeparator, myEnumerator.Current)
        End While
        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

次のコード例は、0以外の下限を持つ別の ArrayArray をコピーする方法を示しています。The following code example shows how to copy an Array to another Array with a nonzero lower bound. ターゲット Array内の既存の要素を上書きする空の要素を含めて、ソース Array 全体がコピーされることに注意してください。Note that the entire source Array is copied, including empty elements that overwrite existing elements in the target Array.

void PrintIndexAndValues( Array^ myArray );
void main2()
{
   // Creates and initializes the source Array.
   Array^ myArrayZero = Array::CreateInstance( String::typeid, 3 );
   myArrayZero->SetValue( "zero", 0 );
   myArrayZero->SetValue( "one", 1 );

   // Displays the source Array.
   Console::WriteLine(  "The array with lowbound=0 contains:" );
   PrintIndexAndValues( myArrayZero );

   // Creates and initializes the target Array.
   array<int>^myArrLen = {4};
   array<int>^myArrLow = {2};
   Array^ myArrayTwo = Array::CreateInstance( String::typeid, myArrLen, myArrLow );
   myArrayTwo->SetValue( "two", 2 );
   myArrayTwo->SetValue( "three", 3 );
   myArrayTwo->SetValue( "four", 4 );
   myArrayTwo->SetValue( "five", 5 );

   // Displays the target Array.
   Console::WriteLine(  "The array with lowbound=2 contains:" );
   PrintIndexAndValues( myArrayTwo );

   // Copy from the array with lowbound=0 to the array with lowbound=2.
   myArrayZero->CopyTo( myArrayTwo, 3 );

   // Displays the modified target Array.
   Console::WriteLine(  "\nAfter copying at relative index 1:" );
   PrintIndexAndValues( myArrayTwo );
}

void PrintIndexAndValues( Array^ myArray )
{
   for ( int i = myArray->GetLowerBound( 0 ); i <= myArray->GetUpperBound( 0 ); i++ )
      Console::WriteLine(  "\t[{0}]:\t{1}", i, myArray->GetValue( i ) );
}

/* 
 This code produces the following output.
 
 The array with lowbound=0 contains:
     [0]:    zero
     [1]:    one
     [2]:    
 The array with lowbound=2 contains:
     [2]:    two
     [3]:    three
     [4]:    four
     [5]:    five
 
 After copying at relative index 1:
     [2]:    two
     [3]:    zero
     [4]:    one
     [5]:
 */
public class SamplesArray2{

   public static void Main()  {
      // Creates and initializes the source Array.
      Array myArrayZero=Array.CreateInstance( typeof(String), 3 );
      myArrayZero.SetValue( "zero", 0 );
      myArrayZero.SetValue( "one", 1 );

      // Displays the source Array.
      Console.WriteLine( "The array with lower bound=0 contains:" );
      PrintIndexAndValues( myArrayZero );

      // Creates and initializes the target Array.
      int[] myArrLen = { 4 };
      int[] myArrLow = { 2 };
      Array myArrayTwo=Array.CreateInstance( typeof(String), myArrLen, myArrLow );
      myArrayTwo.SetValue( "two", 2 );
      myArrayTwo.SetValue( "three", 3 );
      myArrayTwo.SetValue( "four", 4 );
      myArrayTwo.SetValue( "five", 5 );

      // Displays the target Array.
      Console.WriteLine( "The array with lower bound=2 contains:" );
      PrintIndexAndValues( myArrayTwo );

      // Copies from the array with lower bound=0 to the array with lower bound=2.
      myArrayZero.CopyTo( myArrayTwo, 3 );

      // Displays the modified target Array.
      Console.WriteLine( "\nAfter copying to the target array from index 3:" );
      PrintIndexAndValues( myArrayTwo );
   }

   public static void PrintIndexAndValues( Array myArray )  {
      for ( int i = myArray.GetLowerBound(0); i <= myArray.GetUpperBound(0); i++ )
         Console.WriteLine( "\t[{0}]:\t{1}", i, myArray.GetValue( i ) );
   }
}
/* 
This code produces the following output.

The array with lower bound=0 contains:
    [0]:    zero
    [1]:    one
    [2]:    
The array with lower bound=2 contains:
    [2]:    two
    [3]:    three
    [4]:    four
    [5]:    five

After copying to the target array from index 3:
    [2]:    two
    [3]:    zero
    [4]:    one
    [5]:
*/
Public Class SamplesArray2    
    
    Public Shared Sub Main()
        ' Creates and initializes the source Array.
        Dim myArrayZero As Array = Array.CreateInstance(GetType(String), 3)
        myArrayZero.SetValue("zero", 0)
        myArrayZero.SetValue("one", 1)
        
        ' Displays the source Array.
        Console.WriteLine("The array with lower bound=0 contains:")
        PrintIndexAndValues(myArrayZero)
        
        ' Creates and initializes the target Array.
        Dim myArrLen As Integer() = {4}
        Dim myArrLow As Integer() = {2}
        Dim myArrayTwo As Array = Array.CreateInstance(GetType(String), _
           myArrLen, myArrLow)
        myArrayTwo.SetValue("two", 2)
        myArrayTwo.SetValue("three", 3)
        myArrayTwo.SetValue("four", 4)
        myArrayTwo.SetValue("five", 5)
        
        ' Displays the target Array.
        Console.WriteLine("The array with lower bound=2 contains:")
        PrintIndexAndValues(myArrayTwo)
        
        ' Copies from the array with lower bound=0 to the array with lower bound=2.
        myArrayZero.CopyTo(myArrayTwo, 3)
        
        ' Displays the modified target Array.
        Console.WriteLine(ControlChars.Cr + "After copying to the target array from " _
           + "index 3:")
        PrintIndexAndValues(myArrayTwo)
    End Sub
    
    Public Shared Sub PrintIndexAndValues(myArray As Array)
        Dim i As Integer
        For i = myArray.GetLowerBound(0) To myArray.GetUpperBound(0)
            Console.WriteLine(ControlChars.Tab + "[{0}]:" + ControlChars.Tab _
               + "{1}", i, myArray.GetValue(i))
        Next i
    End Sub
End Class

' This code produces the following output.
' 
' The array with lower bound=0 contains:
'     [0]:    zero
'     [1]:    one
'     [2]:    
' The array with lower bound=2 contains:
'     [2]:    two
'     [3]:    three
'     [4]:    four
'     [5]:    five
' 
' After copying to the target array from index 3:
'     [2]:    two
'     [3]:    zero
'     [4]:    one
'     [5]: 

注釈

このメソッドは、インデックス indexを開始位置として、現在の配列インスタンスのすべての要素を array コピー先の配列にコピーします。This method copies all the elements of the current array instance to the array destination array, starting at index index. array のコピー先の配列は、既に次元が設定されている必要があります。コピーされた要素を格納するには、十分な数の要素が必要です。The array destination array must already have been dimensioned and must have a sufficient number of elements to accommodate the copied elements. そうしないと、例外がスローされます。Otherwise, the method throws an exception.

このメソッドは、System.Collections.ICollection インターフェイスをサポートしています。This method supports the System.Collections.ICollection interface. System.Collections.ICollection を実装する必要がない場合は、Copy を使用して追加の間接参照を回避します。If implementing System.Collections.ICollection is not explicitly required, use Copy to avoid an extra indirection.

コピー中にこのメソッドが例外をスローした場合、array の状態は未定義になります。If this method throws an exception while copying, the state of array is undefined.

このメソッドは O (n) 操作であり、nLengthます。簡易コピーのみを実行します。This method is an O(n) operation, where n is Length.It performs a shallow copy only.

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