Question

How to copy a range of elements from an array (index N) to another array with Array.ConstrainedCopy() method in VB.NET

Answer 1

Module Module1

    Sub Main()

        Dim arr1() As Integer = {1, 2, 3, 4, 5, 6}
        Dim arr2() As Integer = {9, 9, 9, 9, 9, 9}

        Array.ConstrainedCopy(arr1, 0, arr2, 0, arr1.Length)

        Console.WriteLine("arr1")
        For Each value In arr1
            Console.WriteLine(value)
        Next

        Console.WriteLine("arr2")
        For Each value In arr2
            Console.WriteLine(value)
        Next

    End Sub

End Module

' run:
' 
' arr1
' 1
' 2
' 3
' 4
' 5
' 6
' arr2
' 1
' 2
' 3
' 4
' 5
' 6

 

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Answer 2

Module Module1

    Sub Main()

        Dim arr1() As Integer = {1, 2, 3, 4, 5, 6}
        Dim arr2() As Integer = {9, 9, 9, 9, 9, 9}

        Array.ConstrainedCopy(arr1, 0, arr2, 0, 3)

        Console.WriteLine("arr1")
        For Each value In arr1
            Console.WriteLine(value)
        Next

        Console.WriteLine("arr2")
        For Each value In arr2
            Console.WriteLine(value)
        Next

    End Sub

End Module

' run:
' 
' arr1
' 1
' 2
' 3
' 4
' 5
' 6
' arr2
' 1
' 2
' 3
' 9
' 9
' 9

 

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Answer 3

Module Module1

    Sub Main()

        Dim arr1() As Integer = {1, 2, 3, 4, 5, 6}
        Dim arr2() As Integer = {9, 9, 9, 9, 9, 9}

        Array.ConstrainedCopy(arr1, 2, arr2, 2, 3)

        Console.WriteLine("arr1")
        For Each value In arr1
            Console.WriteLine(value)
        Next

        Console.WriteLine("arr2")
        For Each value In arr2
            Console.WriteLine(value)
        Next

    End Sub

End Module

' run:
' 
' arr1
' 1
' 2
' 3
' 4
' 5
' 6
' arr2
' 9
' 9
' 3
' 4
' 5
' 9

 

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