急!怎么在asp.net中后台上传视频 最好是有代码的!谢了!成了!送积分! 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 可以考虑断点续传。。上传断点续传using System;using System.Collections.Generic;using System.Text;using System.Collections.Specialized;using System.Net;using System.Net.Sockets;using System.IO;namespace CompleteClient{ /// <summary> /// 文件发送工作类 /// </summary> class PostFile { /// <summary> /// 通过post发送指定文件的指定字段到指定的uri上 /// </summary> /// <param name="uploadfile">上传文件路径</param> /// <param name="url">上传的到的URi位置</param> /// <param name="offset">当前偏移量</param> /// <param name="size">需要发送的块大小</param> /// <param name="fileFormName">服务器端"GET"取得的文件名</param> /// <param name="contenttype">文件类型(保留用)</param> /// <param name="querystring">GET数组(供服务器用GET取得一些信息)</param> /// <param name="cookies">本地cookies(保留用)</param> /// <returns>uri的response的内容以string的形式返回</returns> public string UploadFileEx(string uploadfile, string url, long offset, long size, string fileFormName, string contenttype, NameValueCollection querystring, CookieContainer cookies) { if ((fileFormName == null) || (fileFormName.Length == 0)) { fileFormName = "file"; } if ((contenttype == null) || (contenttype.Length == 0)) { contenttype = "application/octet-stream"; } string postdata; postdata = "?"; if (querystring != null) { foreach (string key in querystring.Keys) { postdata += key + "=" + querystring.Get(key) + "&"; } } Uri uri = new Uri(url + postdata); string boundary = "----------" + DateTime.Now.Ticks.ToString("x"); HttpWebRequest webrequest = (HttpWebRequest)WebRequest.Create(uri); webrequest.CookieContainer = cookies; webrequest.ContentType = "multipart/form-data; boundary=" + boundary; webrequest.Method = "POST"; // 构造一个post请求的http头 StringBuilder sb = new StringBuilder(); sb.Append("--"); sb.Append(boundary); sb.Append("\r\n"); sb.Append("Content-Disposition: form-data; name=\""); sb.Append(fileFormName); sb.Append("\"; filename=\""); sb.Append(Path.GetFileName(uploadfile)); sb.Append("\""); sb.Append("\r\n"); sb.Append("Content-Type: "); sb.Append(contenttype); sb.Append("\r\n"); sb.Append("\r\n"); string postHeader = sb.ToString(); byte[] postHeaderBytes = Encoding.UTF8.GetBytes(postHeader); // Build the trailing boundary string as a byte array // ensuring the boundary appears on a line by itself byte[] boundaryBytes = Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n"); FileStream fileStream = new FileStream(uploadfile, FileMode.Open, FileAccess.Read); long length = postHeaderBytes.Length + (long)size + boundaryBytes.Length; webrequest.ContentLength = length; Stream requestStream = webrequest.GetRequestStream(); // 写入post头 requestStream.Write(postHeaderBytes, 0, postHeaderBytes.Length); // 写入文件内容 byte[] buffer = new Byte[size]; fileStream.Seek(offset, SeekOrigin.Current); fileStream.Read(buffer, 0, buffer.Length); requestStream.Write(buffer, 0, buffer.Length); // 写入post请求的尾 requestStream.Write(boundaryBytes, 0, boundaryBytes.Length); //读取服务器的反馈消息 WebResponse responce = webrequest.GetResponse(); Stream s = responce.GetResponseStream(); StreamReader sr = new StreamReader(s); return sr.ReadToEnd(); } }} swfUploadhttp://www.google.com/search?q=swfUpload&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:zh-CN:official&client=firefox-a 参考:http://www.cnblogs.com/insus/articles/1985102.htmlhttp://www.cnblogs.com/insus/tag/Directory/ 用来记录状态的规则,文文大家是怎么做的 注册时如何屏蔽特殊字符? 触发_RowCommand 复合连接查询 sql语言问题求助 如何防止QQ蜗牛攻击 我调试程序,按Ctrl F5 时,当客户端正在用时,Session是不是也被清空勒,好像是这样的? ASP虚拟路径表示方法(特急) IIS问题 很着急 解决问题者独得400分! 请问怎么发布已经编辑好的网站到购买的虚拟空间? VS2010 格式设置 单引号 大虾们 页面形式的考试系统全屏后如何防止切换?
断点续传
using System;
using System.Collections.Generic;
using System.Text;
using System.Collections.Specialized;
using System.Net;
using System.Net.Sockets;
using System.IO;
namespace CompleteClient
{
/// <summary>
/// 文件发送工作类
/// </summary>
class PostFile
{
/// <summary>
/// 通过post发送指定文件的指定字段到指定的uri上
/// </summary>
/// <param name="uploadfile">上传文件路径</param>
/// <param name="url">上传的到的URi位置</param>
/// <param name="offset">当前偏移量</param>
/// <param name="size">需要发送的块大小</param>
/// <param name="fileFormName">服务器端"GET"取得的文件名</param>
/// <param name="contenttype">文件类型(保留用)</param>
/// <param name="querystring">GET数组(供服务器用GET取得一些信息)</param>
/// <param name="cookies">本地cookies(保留用)</param>
/// <returns>uri的response的内容以string的形式返回</returns>
public string UploadFileEx(string uploadfile, string url, long offset, long size,
string fileFormName, string contenttype,
NameValueCollection querystring, CookieContainer cookies)
{
if ((fileFormName == null) ||
(fileFormName.Length == 0))
{
fileFormName = "file";
} if ((contenttype == null) ||
(contenttype.Length == 0))
{
contenttype = "application/octet-stream";
} string postdata;
postdata = "?";
if (querystring != null)
{
foreach (string key in querystring.Keys)
{
postdata += key + "=" + querystring.Get(key) + "&";
}
}
Uri uri = new Uri(url + postdata); string boundary = "----------" + DateTime.Now.Ticks.ToString("x");
HttpWebRequest webrequest = (HttpWebRequest)WebRequest.Create(uri);
webrequest.CookieContainer = cookies;
webrequest.ContentType = "multipart/form-data; boundary=" + boundary;
webrequest.Method = "POST"; // 构造一个post请求的http头
StringBuilder sb = new StringBuilder();
sb.Append("--");
sb.Append(boundary);
sb.Append("\r\n");
sb.Append("Content-Disposition: form-data; name=\"");
sb.Append(fileFormName);
sb.Append("\"; filename=\"");
sb.Append(Path.GetFileName(uploadfile));
sb.Append("\"");
sb.Append("\r\n");
sb.Append("Content-Type: ");
sb.Append(contenttype);
sb.Append("\r\n");
sb.Append("\r\n"); string postHeader = sb.ToString();
byte[] postHeaderBytes = Encoding.UTF8.GetBytes(postHeader); // Build the trailing boundary string as a byte array
// ensuring the boundary appears on a line by itself
byte[] boundaryBytes =
Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n"); FileStream fileStream = new FileStream(uploadfile,
FileMode.Open, FileAccess.Read);
long length = postHeaderBytes.Length + (long)size +
boundaryBytes.Length;
webrequest.ContentLength = length; Stream requestStream = webrequest.GetRequestStream();
// 写入post头
requestStream.Write(postHeaderBytes, 0, postHeaderBytes.Length); // 写入文件内容
byte[] buffer = new Byte[size];
fileStream.Seek(offset, SeekOrigin.Current);
fileStream.Read(buffer, 0, buffer.Length); requestStream.Write(buffer, 0, buffer.Length); // 写入post请求的尾
requestStream.Write(boundaryBytes, 0, boundaryBytes.Length);
//读取服务器的反馈消息
WebResponse responce = webrequest.GetResponse();
Stream s = responce.GetResponseStream();
StreamReader sr = new StreamReader(s); return sr.ReadToEnd();
}
}
}
http://www.google.com/search?q=swfUpload&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:zh-CN:official&client=firefox-a
http://www.cnblogs.com/insus/articles/1985102.html
http://www.cnblogs.com/insus/tag/Directory/