C# 使用 Webclient.Uploadfile 获取文件上传过程中的上传进度
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Getting the upload progress during file upload using Webclient.Uploadfile
提问by Bruce Adams
I have an app that uploads files to server using the webclient. I'd like to display a progressbar while the file upload is in progress. How would I go about achieving this?
我有一个使用 webclient 将文件上传到服务器的应用程序。我想在文件上传过程中显示一个进度条。我将如何实现这一目标？
采纳答案by Matt Brindley
WebClient.UploadFileAsyncwill allow you to do this.
WebClient.UploadFileAsync将允许您执行此操作。
WebClient webClient = new WebClient();
webClient.UploadFileAsync(address, fileName);
webClient.UploadProgressChanged += WebClientUploadProgressChanged;
...
...
void WebClientUploadProgressChanged(object sender, UploadProgressChangedEventArgs e)
{
Console.WriteLine("Upload {0}% complete. ", e.ProgressPercentage);
}
Note that the thread won't block on Upload anymore, so I'd recommend using:
请注意，该线程不会再阻止上传，因此我建议使用：
webClient.UploadFileCompleted += WebClientUploadCompleted;
...
...
void WebClientUploadCompleted(object sender, UploadFileCompletedEventArgs e)
{
// The upload is finished, clean up
}
回答by ggponti
Add your event handler to WebClient.UploadProgressChanged and call WebClient.UploadFileAsync.
将您的事件处理程序添加到 WebClient.UploadProgressChanged 并调用 WebClient.UploadFileAsync。
See the WebClient.UploadProgressChangeddocumentation for an example.
有关示例，请参阅WebClient.UploadProgressChanged文档。
