vb.net无控件实现文件下载 - 石陆软件屋

Imports System.Net

Public Class Form1

    Private WithEvents myWebclient As WebClient
    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        myWebclient.CancelAsync()       '中断下载
    End Sub

    Private Sub myWebclient_DownloadFileCompleted(ByVal sender As Object, ByVal e As System.ComponentModel.AsyncCompletedEventArgs) Handles myWebclient.DownloadFileCompleted
        MsgBox("下载完毕 ")
    End Sub

    Private Sub myWebclient_DownloadProgressChanged(ByVal sender As Object, ByVal e As System.Net.DownloadProgressChangedEventArgs) Handles myWebclient.DownloadProgressChanged
        Me.Label1.Text = CStr(e.UserState) & "         downloaded   " & e.BytesReceived & "   of   " & e.TotalBytesToReceive & "   bytes.   " & e.ProgressPercentage & "   %   complete... "

    End Sub

    Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim remoteUri As String = "http://j.union.ijinshan.com/jump.php?u_key=6453"
        Dim fileName As String = "C:\xx.rar"
        myWebclient = New WebClient()
        myWebclient.DownloadFileAsync(New Uri(remoteUri), fileName)
    End Sub
End Class
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