ICollection<T>.CopyTo Method

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Copies the elements of the ICollection<T> to an Array, starting at a particular Array index.

Namespace:  System.Collections.Generic
Assembly:  mscorlib (in mscorlib.dll)


Sub CopyTo ( _
    array As T(), _
    arrayIndex As Integer _
void CopyTo(
    T[] array,
    int arrayIndex


  • array
    Type: array<T[]
    The one-dimensional Array that is the destination of the elements copied from ICollection<T>. The Array must have zero-based indexing.
  • arrayIndex
    Type: System.Int32
    The zero-based index in array at which copying begins.


Exception Condition

array is nulla null reference (Nothing in Visual Basic).


arrayIndex is less than 0.


array is multidimensional.


The number of elements in the source ICollection<T> is greater than the available space from arrayIndex to the end of the destination array.


Type T cannot be cast automatically to the type of the destination array.

Version Information


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0


For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.