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CopyTo  
Method  
Copies elements from the Queue to a single dimension array
Queue Class
System.Collections NameSpace
CF1.  Procedure CopyTo ( TargetArray : System.Array; TargetIndex : Integer ) ;
CF : Methods with this mark are Compact Framework Compatible
Description
The CopyTo method takes all elements from the current Queue and overlays these values onto elements of the TargetArray.
 
The overlay starts at the TargetIndex value.
 
Important : the TargetArray must be created in advance - the CopyTo method overlays - it does not build. Also, the target array must have at least the same capacity as the number of elements being overlaid (copied).
 
Important : the TargetArray data type must be able to accomodate the Queue data types in the copy process. If the CopyTo method cannot cast to the target array, then an exception is thrown.
 
Just like Clone, CopyTo performs a shallow copy. When the current Queue holds reference (non primitive) data types, the target array element values still refer to the same objects that current queue elements refer to. This is what is referred to as a shallow copy. A deep copy would create new versions of the referred objects.
Microsoft MSDN Links
System.Collections
System.Collections.Queue
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Copying the whole Queue onto the middle of an Array
program Project1;
{$APPTYPE CONSOLE}

uses
  System.Collections;

var
  MyQueue    : System.Collections.Queue;
  MyArray    : System.Array;
  i          : Integer;

begin
  // Create our queue
  MyQueue := Queue.Create;

  // Add entries to the queue
  MyQueue.EnQueue('First');
  MyQueue.EnQueue('Second');
  MyQueue.Enqueue('Third');

  // Create the target array
  MyArray := System.Array.CreateInstance(TypeOf(String), 7);

  // And fill it
  MyArray.SetValue('0.', 0);
  MyArray.SetValue('1.', 1);
  MyArray.SetValue('2.', 2);
  MyArray.SetValue('3.', 3);
  MyArray.SetValue('4.', 4);
  MyArray.SetValue('5.', 5);
  MyArray.SetValue('6.', 6);

  // Copy the queue to the middle of the array
  MyQueue.CopyTo(MyArray, 2);

  // Display the array
  Console.WriteLine('MyArray now holds :');
  Console.WriteLine;
  for i := 0 to MyArray.Length-1 do
    Console.WriteLine(MyArray.GetValue(i).toString);

  Console.Readline;
end.
   MyArray now holds :
  
   0.
   1.
   First
   Second
   Third
   5.
   6.
 
 
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