StringCollection.CopyTo(String[], Int32) メソッド

定義

1 次元の文字列配列に、その配列内の指定したインデックスを開始位置として StringCollection 値全体をコピーします。Copies the entire StringCollection values to a one-dimensional array of strings, starting at the specified index of the target array.

public:
 void CopyTo(cli::array <System::String ^> ^ array, int index);
public void CopyTo (string[] array, int index);
member this.CopyTo : string[] * int -> unit
Public Sub CopyTo (array As String(), index As Integer)

パラメーター

array
String[]

StringCollection から要素がコピーされる 1 次元の文字列配列。The one-dimensional array of strings that is the destination of the elements copied from StringCollection. Array には、0 から始まるインデックス番号が必要です。The Array must have zero-based indexing.

index
Int32

コピーの開始位置とする array のインデックス (0 から始まる)。The zero-based index in array at which copying begins.

例外

arraynullです。array is null.

index が 0 未満です。index is less than zero.

array が多次元です。array is multidimensional.

- または --or- コピー元の StringCollection の要素数が、コピー先 arrayindex から最後までの使用可能領域を超えています。The number of elements in the source StringCollection is greater than the available space from index to the end of the destination array.

コピー元の StringCollection 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 StringCollection cannot be cast automatically to the type of the destination array.

次のコード例では、を StringCollection 配列にコピーします。The following code example copies a StringCollection to an array.

#using <System.dll>

using namespace System;
using namespace System::Collections;
using namespace System::Collections::Specialized;
void PrintValues( IEnumerable^ myCol );
int main()
{
   
   // Creates and initializes a new StringCollection.
   StringCollection^ myCol = gcnew StringCollection;
   array<String^>^myArr = {"RED","orange","yellow","RED","green","blue","RED","indigo","violet","RED"};
   myCol->AddRange( myArr );
   Console::WriteLine( "Initial contents of the StringCollection:" );
   PrintValues( myCol );
   
   // Copies the collection to a new array starting at index 0.
   array<String^>^myArr2 = gcnew array<String^>(myCol->Count);
   myCol->CopyTo( myArr2, 0 );
   Console::WriteLine( "The new array contains:" );
   for ( int i = 0; i < myArr2->Length; i++ )
   {
      Console::WriteLine( "   [{0}] {1}", i, myArr2[ i ] );

   }
   Console::WriteLine();
}

void PrintValues( IEnumerable^ myCol )
{
   IEnumerator^ myEnum = myCol->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      Object^ obj = safe_cast<Object^>(myEnum->Current);
      Console::WriteLine( "   {0}", obj );
   }

   Console::WriteLine();
}

/*
This code produces the following output.

Initial contents of the StringCollection:
   RED
   orange
   yellow
   RED
   green
   blue
   RED
   indigo
   violet
   RED

The new array contains:
   [0] RED
   [1] orange
   [2] yellow
   [3] RED
   [4] green
   [5] blue
   [6] RED
   [7] indigo
   [8] violet
   [9] RED

*/
using System;
using System.Collections;
using System.Collections.Specialized;

public class SamplesStringCollection  {

   public static void Main()  {

      // Creates and initializes a new StringCollection.
      StringCollection myCol = new StringCollection();
      String[] myArr = new String[] { "RED", "orange", "yellow", "RED", "green", "blue", "RED", "indigo", "violet", "RED" };
      myCol.AddRange( myArr );

      Console.WriteLine( "Initial contents of the StringCollection:" );
      PrintValues( myCol );

      // Copies the collection to a new array starting at index 0.
      String[] myArr2 = new String[myCol.Count];
      myCol.CopyTo( myArr2, 0 );

      Console.WriteLine( "The new array contains:" );
      for ( int i = 0; i < myArr2.Length; i++ )  {
         Console.WriteLine( "   [{0}] {1}", i, myArr2[i] );
      }
      Console.WriteLine();
   }

   public static void PrintValues( IEnumerable myCol )  {
      foreach ( Object obj in myCol )
         Console.WriteLine( "   {0}", obj );
      Console.WriteLine();
   }
}

/*
This code produces the following output.

Initial contents of the StringCollection:
   RED
   orange
   yellow
   RED
   green
   blue
   RED
   indigo
   violet
   RED

The new array contains:
   [0] RED
   [1] orange
   [2] yellow
   [3] RED
   [4] green
   [5] blue
   [6] RED
   [7] indigo
   [8] violet
   [9] RED

*/
Imports System.Collections
Imports System.Collections.Specialized

Public Class SamplesStringCollection   

   Public Shared Sub Main()

      ' Creates and initializes a new StringCollection.
      Dim myCol As New StringCollection()
      Dim myArr() As [String] = {"RED", "orange", "yellow", "RED", "green", "blue", "RED", "indigo", "violet", "RED"}
      myCol.AddRange(myArr)

      Console.WriteLine("Initial contents of the StringCollection:")
      PrintValues(myCol)

      ' Copies the collection to a new array starting at index 0.
      Dim myArr2(myCol.Count) As [String]
      myCol.CopyTo(myArr2, 0)

      Console.WriteLine("The new array contains:")
      Dim i As Integer
      For i = 0 To myArr2.Length - 1
         Console.WriteLine("   [{0}] {1}", i, myArr2(i))
      Next i
      Console.WriteLine()

   End Sub

   Public Shared Sub PrintValues(myCol As IEnumerable)
      Dim obj As [Object]
      For Each obj In  myCol
         Console.WriteLine("   {0}", obj)
      Next obj
      Console.WriteLine()
   End Sub

End Class


'This code produces the following output.
'
'Initial contents of the StringCollection:
'   RED
'   orange
'   yellow
'   RED
'   green
'   blue
'   RED
'   indigo
'   violet
'   RED
'
'The new array contains:
'   [0] RED
'   [1] orange
'   [2] yellow
'   [3] RED
'   [4] green
'   [5] blue
'   [6] RED
'   [7] indigo
'   [8] violet
'   [9] RED
'

注釈

指定された配列は、互換性のある型である必要があります。The specified array must be of a compatible type.

要素は、の列挙子がを反復処理するのと同じ順序で、にコピーされ Array StringCollection StringCollection ます。The elements are copied to the Array in the same order in which the enumerator of the StringCollection iterates through the StringCollection.

このメソッドは O(n) 操作です。nCount です。This method is an O(n) operation, where n is Count.

適用対象

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