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List(Of T).ToArray Method

Copies the elements of the List(Of T) to a new array.

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

'Declaration
Public Function ToArray As T()

Return Value

Type: T()
An array containing copies of the elements of the List(Of T).

The elements are copied using Array.Copy, which is an O(n) operation, where n is Count.

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

The following example demonstrates the ToArray method and other methods of the List(Of T) class that act on ranges. At the end of the example, the GetRange method is used to get three items from the list, beginning with index location 2. The ToArray method is called on the resulting List(Of T), creating an array of three elements. The elements of the array are displayed.

Imports System
Imports System.Collections.Generic

Public Class Example

    Public Shared Sub Main()

        Dim input() As String = { "Brachiosaurus", _
                                  "Amargasaurus", _
                                  "Mamenchisaurus" }

        Dim dinosaurs As New List(Of String)(input)

        Console.WriteLine(vbLf & "Capacity: {0}", dinosaurs.Capacity)

        Console.WriteLine()
        For Each dinosaur As String In dinosaurs
            Console.WriteLine(dinosaur)
        Next

        Console.WriteLine(vbLf & "AddRange(dinosaurs)")
        dinosaurs.AddRange(dinosaurs)

        Console.WriteLine()
        For Each dinosaur As String In dinosaurs
            Console.WriteLine(dinosaur)
        Next

        Console.WriteLine(vbLf & "RemoveRange(2, 2)")
        dinosaurs.RemoveRange(2, 2)

        Console.WriteLine()
        For Each dinosaur As String In dinosaurs
            Console.WriteLine(dinosaur)
        Next

        input = New String() { "Tyrannosaurus", _
                               "Deinonychus", _
                               "Velociraptor" }

        Console.WriteLine(vbLf & "InsertRange(3, input)")
        dinosaurs.InsertRange(3, input)

        Console.WriteLine()
        For Each dinosaur As String In dinosaurs
            Console.WriteLine(dinosaur)
        Next

        Console.WriteLine(vbLf & "output = dinosaurs.GetRange(2, 3).ToArray")
        Dim output() As String = dinosaurs.GetRange(2, 3).ToArray()

        Console.WriteLine()
        For Each dinosaur As String In output
            Console.WriteLine(dinosaur)
        Next 

    End Sub 
End Class 

' This code example produces the following output: 

'Capacity: 3 

'Brachiosaurus 
'Amargasaurus 
'Mamenchisaurus 

'AddRange(dinosaurs) 

'Brachiosaurus 
'Amargasaurus 
'Mamenchisaurus 
'Brachiosaurus 
'Amargasaurus 
'Mamenchisaurus 

'RemoveRange(2, 2) 

'Brachiosaurus 
'Amargasaurus 
'Amargasaurus 
'Mamenchisaurus 

'InsertRange(3, input) 

'Brachiosaurus 
'Amargasaurus 
'Amargasaurus 
'Tyrannosaurus 
'Deinonychus 
'Velociraptor 
'Mamenchisaurus 

'output = dinosaurs.GetRange(2, 3).ToArray 

'Amargasaurus 
'Tyrannosaurus 
'Deinonychus

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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