本文整理汇总了VB.NET中System.Net.WebClient.DownloadProgressChanged事件的典型用法代码示例。如果您正苦于以下问题：VB.NET WebClient.DownloadProgressChanged事件的具体用法？VB.NET WebClient.DownloadProgressChanged怎么用？VB.NET WebClient.DownloadProgressChanged使用的例子？那么恭喜您, 这里精选的事件代码示例或许可以为您提供帮助。您也可以进一步了解该事件所在类System.Net.WebClient的用法示例。
在下文中一共展示了WebClient.DownloadProgressChanged事件的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1: WebClient
' Sample call : DownLoadFileInBackground2 ("http:' www.contoso.com/logs/January.txt")
Public Shared Sub DownLoadFileInBackground2(ByVal address As String)
Dim client As WebClient = New WebClient()
' Specify that the DownloadFileCallback method gets called
' when the download completes.
AddHandler client.DownloadFileCompleted, AddressOf DownloadFileCallback2
' Specify a progress notification handler.
AddHandler client.DownloadProgressChanged, AddressOf DownloadProgressCallback
Dim uri as Uri = New Uri(address)
client.DownloadFileAsync(uri, "serverdata.txt")
End Sub示例2: UploadProgressCallback
Private Shared Sub UploadProgressCallback(ByVal sender As Object, ByVal e As UploadProgressChangedEventArgs)
' Displays the operation identifier, and the transfer progress.
Console.WriteLine("{0} uploaded {1} of {2} bytes. {3} % complete...", _
CStr(e.UserState), e.BytesSent, e.TotalBytesToSend, e.ProgressPercentage)
End Sub
Private Shared Sub DownloadProgressCallback(ByVal sender As Object, ByVal e As DownloadProgressChangedEventArgs)
' Displays the operation identifier, and the transfer progress.
Console.WriteLine("0} downloaded 1} of 2} bytes. 3} % complete...", _
CStr(e.UserState), e.BytesReceived, e.TotalBytesToReceive, e.ProgressPercentage)
End Sub