' uploader.vb Imports System Imports System.Net Imports System.Text Public Class Uploader Shared Sub Main Dim url As String = "http://localhost/upload.aspx" Dim file As String = "c:\test.jpg" Dim wc As WebClient = new WebClient() Dim ret As byte() = wc.UploadFile(url, file) Dim result As String = Encoding.ASCII.GetString(ret) wc.Dispose() Console.WriteLine(result) End Sub End Class ' コンパイル方法:vbc /r:System.dll uploader.vb