Need either VB2010 script/C# script for downloading HTTP Url link

Can anyone help me to download HTTP Url link using VB2010 or C# script.

Right now I am using the below script, but its showing DTS script task : Run time error

Imports System
Imports System.IO
Imports System.Text
Imports System.Windows.Forms
Imports Microsoft.SqlServer.Dts.Runtime

<Microsoft.SqlServer.Dts.Tasks.ScriptTask.SSISScriptTaskEntryPointAttribute()> _
<System.CLSCompliantAttribute(False)> _
Partial Public Class ScriptMain
    Inherits Microsoft.SqlServer.Dts.Tasks.ScriptTask.VSTARTScriptObjectModelBase

    Enum ScriptResults
        Success = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Success
        Failure = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Failure
    End Enum

    Public Sub Main()

        ' Get the unmanaged connection object, from the connection manager called "HTTP Connection Manager"
        Dim nativeObject As Object = Dts.Connections("SourceUrl_WESTROX1").AcquireConnection(Nothing)

        ' Create a new HTTP client connection
        Dim connection As New HttpClientConnection(nativeObject)


        ' Download the file #1
        ' Save the file from the connection manager to the local path specified
        Dim filename As String = "\\zsa01\EEMS\Dev\COGEN\WESTROX1\WESTROX1.CSV"
        connection.DownloadFile("\\zsa01\EEMS\Dev\COGEN\WESTROX1\WESTROX1.CSV", True)

        ' Confirm file is there
        'If File.Exists(filename) Then
        '    MessageBox.Show(String.Format("File {0} has been downloaded.", filename))
        'End If


        '' Download the file #2
        '' Read the text file straight into memory
        'Dim buffer As Byte() = connection.DownloadData()
        'Dim data As String = Encoding.ASCII.GetString(buffer)

        '' Display the file contents
        'MessageBox.Show(data)


        Dts.TaskResult = ScriptResults.Success
    End Sub

End Class

Thanks in advance.