WinForm更新文件

参考网上一位朋友代码，略有修改 

  1 private System.Threading.Thread thread1;
  2 
  3         public Login()
  4         {
  5             InitializeComponent();
  6 
  7         }
  8 
  9         private void button2_Click(object sender, EventArgs e)
 10         {
 11             thread1 = new System.Threading.Thread(new System.Threading.ThreadStart(UploadVserion));
 12             thread1.Start();
 13         }
 14 
 15 
 16         private void UploadVserion()
 17         {
 18             CheckForIllegalCrossThreadCalls = false;
 19 
 20             String url = "http://123.4.5.5/WebApplication/";
 21             String[] arr_file = { "1.exe", "1.dll", "1.png", "1.rar", "2.mp3" };
 22 
 23             try
 24             {
 25 
 26                 foreach (String filename in arr_file)
 27                 {
 28                     //DownloadFile("http://localhost:1928/WebServer/downloader/123.rar", @"C:\123.rar", progressBar1, label1);
 29 
 30                     String fullpath = url + filename;
 31                     String savepath = Application.StartupPath +"\\" + filename;
 32                     this.label3.Text = "更新文件：" + filename;
 33                     DownloadFile(fullpath, savepath, this.progressBar1, label4);
 34                 }
 35                 
 36                 this.label3.Text = "更新成功";
 37 
 38             }
 39             catch (System.Exception ex)
 40             {
 41                 this.label3.Text = ex.Message ;
 42             }
 43         }
 44 
 45         /// <summary>        
 46         /// c#,.net 下载文件        
 47         /// </summary>        
 48         /// <param name="URL">下载文件地址</param>       
 49         /// <param name="URL">下载文件地址</param>    
 50         /// <param name="Filename">下载后的存放地址</param>        
 51         /// <param name="Prog">用于显示的进度条</param>        
 52         /// 
 53         private void DownloadFile(string URL, string filename, System.Windows.Forms.ProgressBar prog, System.Windows.Forms.Label label1)
 54         {
 55             decimal percent = 0;
 56             try
 57             {
 58                 System.Net.HttpWebRequest Myrq = (System.Net.HttpWebRequest)System.Net.HttpWebRequest.Create(URL);
 59                 System.Net.HttpWebResponse myrp = (System.Net.HttpWebResponse)Myrq.GetResponse();
 60                 long totalBytes = myrp.ContentLength;
 61                 if (prog != null)
 62                 {
 63                     prog.Maximum = (int)totalBytes;
 64                 }
 65                 System.IO.Stream st = myrp.GetResponseStream();
 66                 System.IO.Stream so = new System.IO.FileStream(filename, System.IO.FileMode.Create);
 67                 long totalDownloadedByte = 0;
 68                 byte[] by = new byte[1024];
 69                 int osize = st.Read(by, 0, (int)by.Length);
 70                 while (osize > 0)
 71                 {
 72                     totalDownloadedByte = osize + totalDownloadedByte;
 73                     System.Windows.Forms.Application.DoEvents();
 74                     so.Write(by, 0, osize);
 75                     if (prog != null)
 76                     {
 77                         prog.Value = (int)totalDownloadedByte;
 78                     }
 79                     osize = st.Read(by, 0, (int)by.Length);
 80 
 81                     percent = Math.Round((decimal)totalDownloadedByte / (decimal)totalBytes * 100, 2);
 82                     label4.Text = "当前补丁下载进度" + percent.ToString() + "%";
 83                     System.Windows.Forms.Application.DoEvents(); //必须加注这句代码，否则label1将因为循环执行太快而来不及显示信息
 84                 }
 85                 so.Close();
 86                 st.Close();
 87             }
 88             catch (System.Exception ex)
 89             {
 90                 String a = ex.Message;
 91                 throw;
 92             }
 93         }
 94 
 95         private void button3_Click(object sender, EventArgs e)
 96         {
 97             DialogResult result = MessageBox.Show("确认取消更新?", "提示···", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning);
 98             if (result == DialogResult.OK)
 99             {
100                 //thread1.Interrupt();
101 
102                 //this.label4.Text = "1";
103                 thread1.Abort();
104                 thread1.Join();
105                 
106             }
107         }
posted @ 2016-01-13 21:18  阿日斯兰  阅读(309)  评论(0)  编辑  收藏  举报