CopyTo Method

Collection<T>.CopyTo Method (T[], Int32)


Copies the entire Collection<T> to a compatible one-dimensional Array, starting at the specified index of the target array.

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

public void CopyTo(
	T[] array,
	int index


Type: T[]

The one-dimensional Array that is the destination of the elements copied from Collection<T>. The Array must have zero-based indexing.

Type: System.Int32

The zero-based index in array at which copying begins.

Exception Condition

array is null.


index is less than zero.


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

This method uses Array.Copy to copy the elements.

The elements are copied to the Array in the same order in which the enumerator iterates through the Collection<T>.

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

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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