VB.NET：如何使webRequest异步

我想这对你来说是一个简单的问题，但我不理解其他webRequests的情况，所以我在这里问：

如何使此webRequest异步

Dim sBuffer As String
Dim oRequest As WebRequest = WebRequest.Create(url)
oRequest.Method = "GET"
Dim oResponse As WebResponse = oRequest.GetResponse()
Dim oStream As New StreamReader(oResponse.GetResponseStream())
sBuffer = oStream.ReadToEnd()
oStream.Close()
oResponse.Close()
Return sBuffer

谢谢你的帮助

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在这方面，Flo

具有简单返回值的函数不能简单地实现异步，您需要找到另一种方法来处理返回的数据。我建议您使用System.Net.WebClient，这是一个比您上面所做的更简单的包装器，使用这个类asynch非常简单

Dim wc As New WebClient
AddHandler wc.DownloadStringCompleted, AddressOf DownloadCompletedHander
wc.DownloadStringAsync(url)

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我不太会说VB.net，但我想这是谷歌搜索的结果，你怎么能用它来放置帖子及其参数呢？

Public Shared Sub DownloadCompletedHander(ByVal sender As Object, ByVal e As DownloadStringCompletedEventArgs)
    If e.Cancelled = False AndAlso e.Error Is Nothing Then
        Dim myString As String = CStr(e.Result)
        'Do stuff with data
    End If

End Sub