【Visual Studio Visual Csharp】HTTP Download

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; using System.Net; // make sure that using System.Net; is included using System.Diagnostics; // make sure that using System.Diagnostics; is included namespace HttpDownloadC { public partial class Form1 : Form { public Form1() { InitializeComponent(); } WebClient webClient = new WebClient(); private void button1_Click(object sender, EventArgs e) { webClient.DownloadProgressChanged += new DownloadProgressChangedEventHandler(webClient_DownloadProgressChanged); webClient.DownloadFileCompleted += new AsyncCompletedEventHandler(webclient_DownloadFileCompleted); // start download webClient.DownloadFileAsync(new Uri(textBox1.Text), @"C:\\MYRAR.EXE"); } void webClient_DownloadProgressChanged(object sender, DownloadProgressChangedEventArgs e) { double bytesIn = double.Parse(e.BytesReceived.ToString()); double totalBytes = double.Parse(e.TotalBytesToReceive.ToString()); double percentage = bytesIn / totalBytes * 100; progressBar1.Value = int.Parse(Math.Truncate(percentage).ToString()); } void webclient_DownloadFileCompleted(object sender, AsyncCompletedEventArgs e) { MessageBox.Show("Saved as C:\\MYRAR.EXE", "Httpdownload"); } } }

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