댓글 쓰기 권한이 없습니다. 로그인 하시겠습니까?
C#
2014.09.11 14:52
Download Files from Web [C#]
조회 수 9466 댓글 0
http://www.csharp-examples.net/download-files/ Download File SynchronouslyThe following code shows how to download file synchronously. This method blocks the main thread until the file is downloaded or an error occur (in this case the WebException is thrown). [C#]
using System.Net; WebClient webClient = new WebClient(); webClient.DownloadFile("http://mysite.com/myfile.txt", @"c:\myfile.txt"); Download File AsynchronouslyTo download file without blocking the main thread use asynchronous method DownloadFileAsync. You can also set event handlers to show progress and to detect that the file is downloaded. [C#]
private void btnDownload_Click(object sender, EventArgs e) { WebClient webClient = new WebClient(); webClient.DownloadFileCompleted += new AsyncCompletedEventHandler(Completed); webClient.DownloadProgressChanged += new DownloadProgressChangedEventHandler(ProgressChanged); webClient.DownloadFileAsync(new Uri("http://mysite.com/myfile.txt"), @"c:\myfile.txt"); } private void ProgressChanged(object sender, DownloadProgressChangedEventArgs e) { progressBar.Value = e.ProgressPercentage; } private void Completed(object sender, AsyncCompletedEventArgs e) { MessageBox.Show("Download completed!"); } Note: Although you use asynchronous method, it can block the main thread for a while. It's because before the async download itself, it checks the DNS name (in this case „mysite.com“) and this check is done internally by blocking function. If you use directly IP instead of domain name, the DownloadFileAsync method will be fully asynchronous. Dreamy의 코드 스크랩내가 모으고 내가 보는
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Designed by sketchbooks.co.kr / sketchbook5 board skin
Sketchbook5, 스케치북5
Sketchbook5, 스케치북5
Sketchbook5, 스케치북5
Sketchbook5, 스케치북5