webclient 下载100M大的文件出问题
我用webclient.downloadasync下载一个100M大的文件出了问题程序代码如下：
Dim waiter As System.Threading.AutoResetEvent
Private Sub DownloadFileCallback2(ByVal sender As Object, ByVal e As AsyncCompletedEventArgs)
If Not e.Cancelled And e.Error Is Nothing Then
Debug.WriteLine("下载完成!")
waiter.Set()
End If
End Sub
Private Sub DownloadProgressCallback(ByVal sender As Object, ByVal e As DownloadProgressChangedEventArgs)
Console.WriteLine("下载进度" & e.ProgressPercentage)
End Sub
Sub ftpget(ByVal address As String, ByVal fn As String)
waiter = New System.Threading.AutoResetEvent(False)
Dim ftpclient As New WebClient
Dim handler As AsyncCompletedEventHandler
Try
Dim ftpuri As New System.Uri(address)
handler = AddressOf DownloadFileCallback2
AddHandler ftpclient.DownloadFileCompleted, handler
AddHandler ftpclient.DownloadProgressChanged, AddressOf DownloadProgressCallback
ftpclient.DownloadFileAsync(ftpuri, fn, waiter)
waiter.WaitOne()
Catch ex As System.Net.WebException
Console.WriteLine("Not find file" & ex.Message)
End Try
End Sub
下载过程中DownloadProgressChanged事件一直正常，进度一直到100%，但是 DownloadFileCompleted不发生，线程停止不动。 把下载的文件换成26M的文件则DownloadFileCompleted返回正常，线程能正常结束。
请教各位大侠怎么办？ --------------------编程问答-------------------- waiter.WaitOne()要拿掉 --------------------编程问答-------------------- waiter.WaitOne()拿掉后，只下载了一个0KB的文件，就结束了 --------------------编程问答-------------------- 我下载1M以内的小文件，去掉waiter.WaitOne()也可下载下来。
我用这段程序在局域网内下载100M以上的文件也可以正常运行，我就不明白了
补充：.NET技术 , VB.NET
