使用 Webclient.Uploadfile 获取文件上传过程中的上传进度

本文介绍了使用 Webclient.Uploadfile 获取文件上传过程中的上传进度的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有一个使用网络客户端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?

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?

推荐答案

WebClient.UploadFileAsync 将允许您执行此操作.

WebClient.UploadFileAsync will allow you to do this.

WebClient webClient = new WebClient(); webClient.UploadFileAsync(address, fileName); webClient.UploadProgressChanged += WebClientUploadProgressChanged;

...

void WebClientUploadProgressChanged(object sender, UploadProgressChangedEventArgs e) { Console.WriteLine("Upload {0}% complete. ", e.ProgressPercentage); }

请注意，该线程将不再阻塞上传，因此我建议使用:

Note that the thread won't block on Upload anymore, so I'd recommend using:

webClient.UploadFileCompleted += WebClientUploadCompleted;

...

void WebClientUploadCompleted(object sender, UploadFileCompletedEventArgs e) { // The upload is finished, clean up }