这篇文章主要介绍了C#文件断点续传实现方法,涉及C#文件传输的技巧,具有一定参考借鉴价值,需要的朋友可以参考下
本文实例讲述了C#文件断点续传实现方法。分享给大家供大家参考。具体实现方法如下:
- /// <summary>
- /// 下载局域网文件
- /// </summary>
- /// <param name="path">文件路径,如://192.168.10.1/app/app/123.zip</param>
- /// <param name="username">计算机名称</param>
- /// <param name="password">计算机密码</param>
- static void RequestWindowsShared(string path, string username, string password)
- {
- //文件总大小
- int allBytesCount = 0;
- //每次传输大小
- int byteTemp = 1024;
- //当前位置
- int bytePosition = 0;
- //剩下大小
- int remain = 0;
- System.Net.FileWebRequest request = null;
- System.Net.FileWebResponse response = null;
- System.IO.Stream stream = null;
- System.IO.FileStream fileStream = null;
- try
- {
- Uri uri = new Uri(path);
- request = (System.Net.FileWebRequest)System.Net.FileWebRequest.Create(uri);
- System.Net.ICredentials ic = new System.Net.NetworkCredential(username, password);
- request.Credentials = ic;
- response = (System.Net.FileWebResponse)request.GetResponse();
- stream = response.GetResponseStream();
- byte[] bytes = new byte[stream.Length];
- stream.Read(bytes, 0, bytes.Length);
- string filename = System.Environment.GetFolderPath(Environment.SpecialFolder.Desktop) + "//" + System.IO.Path.GetFileName(path);
- fileStream = new FileStream(filename, System.IO.FileMode.Create, System.IO.FileAccess.Write, System.IO.FileShare.ReadWrite);
- allBytesCount = bytes.Length;
- remain = allBytesCount;
- while (remain > 0)
- {
- fileStream.Write(bytes, bytePosition, byteTemp);
- remain = remain - byteTemp;
- bytePosition = bytePosition + byteTemp;
- fileStream.Flush();
- if (remain < byteTemp)
- byteTemp = remain;
- }
- Console.WriteLine("下载成功!");
- }
- catch (Exception ex)
- {
- Console.WriteLine(ex.Message);
- }
- finally
- {
- fileStream.Close();
- fileStream.Dispose();
- stream.Close();
- stream.Dispose();
- }
- }
- /// <summary>
- /// 上传文件
- /// </summary>
- /// <param name="path">共享目录路径+文件名称</param>
- /// <param name="local">本地路径</param>
- /// <param name="username">用户名</param>
- /// <param name="password">密码</param>
- static void ResponseWindowsShared(string path, string local, string username, string password)
- {
- //文件总大小
- int allBytesCount = 0;
- //每次传输大小
- int byteTemp = 1024;
- //当前位置
- int bytePosition = 0;
- //剩下大小
- int remain = 0;
- System.Net.FileWebRequest request = null;
- System.IO.Stream stream = null;
- try
- {
- //时间戳
- string strBoundary = "----------" + DateTime.Now.Ticks.ToString("x");
- Uri uri = new Uri(path);
- byte[] bytes = System.IO.File.ReadAllBytes(local);
- request = (System.Net.FileWebRequest)System.Net.FileWebRequest.Create(uri);
- request.Method = "POST";
- //设置获得响应的超时时间(300秒)
- request.Timeout = 300000;
- request.ContentType = "multipart/form-data; boundary=" + strBoundary;
- request.ContentLength = bytes.Length;
- System.Net.ICredentials ic = new System.Net.NetworkCredential(username, password);
- request.Credentials = ic;
- stream = request.GetRequestStream();
- allBytesCount = bytes.Length;
- remain = allBytesCount;
- while (remain > 0)
- {
- stream.Write(bytes, bytePosition, byteTemp);
- remain = remain - byteTemp;
- bytePosition = bytePosition + byteTemp;
- stream.Flush();
- if (remain < byteTemp)
- byteTemp = remain;
- }
- Console.WriteLine("上传成功!");
- }
- catch (Exception ex)
- {
- Console.WriteLine(ex.Message);
- }
- finally
- {
- stream.Close();
- stream.Dispose();
- }
- }
希望本文所述对大家的C#程序设计有所帮助。
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