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StringDictionary.CopyTo Method

Copies the string dictionary values to a one-dimensional Array instance at the specified index.

Namespace:  System.Collections.Specialized
Assembly:  System (in System.dll)

public virtual void CopyTo(
	Array array,
	int index


Type: System.Array
The one-dimensional Array that is the destination of the values copied from the StringDictionary.
Type: System.Int32
The index in the array where copying begins.


array is multidimensional.


The number of elements in the StringDictionary is greater than the available space from index to the end of array.


array is null.


index is less than the lower bound of array.

CopyTo copies objects that can be typecast to System.Collections.DictionaryEntry. DictionaryEntry contains both the key and the value.

The elements copied to the Array are sorted in the same order that the enumerator iterates through the StringDictionary.

This method is an O(n) operation, where n is Count.

The following code example shows how a StringDictionary can be copied to an array.

using System;
using System.Collections;
using System.Collections.Specialized;

public class SamplesStringDictionary  {

   public static void Main()  {

      // Creates and initializes a new StringDictionary.
      StringDictionary myCol = new StringDictionary();
      myCol.Add( "red", "rojo" );
      myCol.Add( "green", "verde" );
      myCol.Add( "blue", "azul" );

      // Displays the values in the StringDictionary.
      Console.WriteLine( "KEYS\tVALUES in the StringDictionary" );
      foreach ( DictionaryEntry myDE in myCol )
         Console.WriteLine( "{0}\t{1}", myDE.Key, myDE.Value );

      // Creates an array with DictionaryEntry elements.
      DictionaryEntry[] myArr = { new DictionaryEntry(), new DictionaryEntry(), new DictionaryEntry() };

      // Copies the StringDictionary to the array.
      myCol.CopyTo( myArr, 0 );

      // Displays the values in the array.
      Console.WriteLine( "KEYS\tVALUES in the array" );
      for ( int i = 0; i < myArr.Length; i++ )
         Console.WriteLine( "{0}\t{1}", myArr[i].Key, myArr[i].Value );



This code produces the following output.

KEYS    VALUES in the StringDictionary
green   verde
red     rojo
blue    azul

KEYS    VALUES in the array
green   verde
red     rojo
blue    azul


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.