Copies the entire ListT to a compatible one-dimensional array, starting at the beginning of the target array.
Assembly: mscorlib (in mscorlib.dll)
| Exception | Condition |
|---|---|
| ArgumentNullException | array is . |
| ArgumentException | The number of elements in the source ListT is greater than the number of elements that the destination array can contain. |
The following code example demonstrates all three overloads of the CopyTo method. A ListT of strings is created and populated with 5 strings. An empty string array of 15 elements is created, and the CopyTo(T) method overload is used to copy all the elements of the list to the array beginning at the first element of the array. The CopyTo(T, Int32) method overload is used to copy all the elements of the list to the array beginning at array index 6 (leaving index 5 empty). Finally, the CopyTo(Int32, T, Int32, Int32) method overload is used to copy 3 elements from the list, beginning with index 2, to the array beginning at array index 12 (leaving index 11 empty). The contents of the array are then displayed.
Imports System
Imports System.Collections.Generic
Public Class Example
Public Shared Sub Main()
Dim dinosaurs As New List(Of String)
dinosaurs.Add("Tyrannosaurus")
dinosaurs.Add("Amargasaurus")
dinosaurs.Add("Mamenchisaurus")
dinosaurs.Add("Brachiosaurus")
dinosaurs.Add("Compsognathus")
Console.WriteLine()
For Each dinosaur As String In dinosaurs
Console.WriteLine(dinosaur)
Next
' Declare an array with 15 elements (0 through 14).
Dim array(14) As String
dinosaurs.CopyTo(array)
dinosaurs.CopyTo(array, 6)
dinosaurs.CopyTo(2, array, 12, 3)
Console.WriteLine(vbLf & "Contents of the array:")
For Each dinosaur As String In array
Console.WriteLine(dinosaur)
Next
End Sub
End Class
' This code example produces the following output:
'
'Tyrannosaurus
'Amargasaurus
'Mamenchisaurus
'Brachiosaurus
'Compsognathus
'
'Contents of the array:
'Tyrannosaurus
'Amargasaurus
'Mamenchisaurus
'Brachiosaurus
'Compsognathus
'
'Tyrannosaurus
'Amargasaurus
'Mamenchisaurus
'Brachiosaurus
'Compsognathus
'
'Mamenchisaurus
'Brachiosaurus
'Compsognathususing System;
using System.Collections.Generic;
public class Example
{
public static void Main()
{
List<string> dinosaurs = new List<string>();
dinosaurs.Add("Tyrannosaurus");
dinosaurs.Add("Amargasaurus");
dinosaurs.Add("Mamenchisaurus");
dinosaurs.Add("Brachiosaurus");
dinosaurs.Add("Compsognathus");
Console.WriteLine();
foreach(string dinosaur in dinosaurs)
{
Console.WriteLine(dinosaur);
}
// Declare an array with 15 elements.
string[] array = new string[15];
dinosaurs.CopyTo(array);
dinosaurs.CopyTo(array, 6);
dinosaurs.CopyTo(2, array, 12, 3);
Console.WriteLine("\nContents of the array:");
foreach(string dinosaur in array)
{
Console.WriteLine(dinosaur);
}
}
}
/* This code example produces the following output:
Tyrannosaurus
Amargasaurus
Mamenchisaurus
Brachiosaurus
Compsognathus
Contents of the array:
Tyrannosaurus
Amargasaurus
Mamenchisaurus
Brachiosaurus
Compsognathus
Tyrannosaurus
Amargasaurus
Mamenchisaurus
Brachiosaurus
Compsognathus
Mamenchisaurus
Brachiosaurus
Compsognathus
*/using namespace System;
using namespace System::Collections::Generic;
void main()
{
List<String^>^ dinosaurs = gcnew List<String^>();
dinosaurs->Add("Tyrannosaurus");
dinosaurs->Add("Amargasaurus");
dinosaurs->Add("Mamenchisaurus");
dinosaurs->Add("Brachiosaurus");
dinosaurs->Add("Compsognathus");
Console::WriteLine();
for each(String^ dinosaurs in dinosaurs )
{
Console::WriteLine(dinosaurs);
}
// Create an array of 15 strings.
array<String^>^ arr = gcnew array<String^>(15);
dinosaurs->CopyTo(arr);
dinosaurs->CopyTo(arr, 6);
dinosaurs->CopyTo(2, arr, 12, 3);
Console::WriteLine("\nContents of the array:");
for each(String^ dinosaurs in arr )
{
Console::WriteLine(dinosaurs);
}
}
/* This code example produces the following output:
Tyrannosaurus
Amargasaurus
Mamenchisaurus
Brachiosaurus
Deinonychus
Tyrannosaurus
Compsognathus
IndexOf("Tyrannosaurus"): 0
IndexOf("Tyrannosaurus", 3): 5
IndexOf("Tyrannosaurus", 2, 2): -1
*/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.
