网络文件下载,类封闭问题.顺便提一个非技术问题(考高级程序员难不)
lyfer 2006-05-29 10:32:54 public class download
Private WithEvents myWebclient As WebClient
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim remoteUri As String = "http://office.9zp.com/UploadFile/Word排版艺术.rar"
Dim fileName As String = "C:\xx.rar"
myWebclient = New WebClient()
myWebclient.DownloadFileAsync(New Uri(remoteUri), fileName)
End Sub
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
end class
这个如果这要写成类myWebclient控件象DownloadProgressChanged这样的事件好象都不能触发了.但有时候又能触发.郁闷中呀!!!顺便问一句,考个高级程序员有什么要求?什么难度?有没有学历要求?都要做哪些事?VB.NET