BootStrap Progressbar 实现大文件上传的进度条的实例代码

HTML5大文件分片上传示例 <%--

/// Summary description for Upload /// public class Upload : IHttpHandler { public void ProcessRequest(HttpContext context) { context.Response.ContentType = "text/plain"; try { //从Request中取参数，注意上传的文件在Requst.Files中 string name = context.Request["name"]; int total = Convert.ToInt32(context.Request["total"]); int index = Convert.ToInt32(context.Request["index"]); var data = context.Request.Files["data"]; //保存一个分片到磁盘上 string dir = context.Request.MapPath("~/temp"); string file = Path.Combine(dir,name + "_" + index); data.SaveAs(file); //如果已经是最后一个分片，组合 //当然你也可以用其它方法比如接收每个分片时直接写到最终文件的相应位置上，但要控制好并发防止文件锁冲突 if (index == total) { file = Path.Combine(dir,name); //byte[] bytes = null; using (FileStream fs = new FileStream(file,FileMode.OpenOrCreate)) { for (int i = 1; i <= total; ++i) { string part = Path.Combine(dir,name + "_" + i); //bytes = System.IO.File.ReadAllBytes(part); //fs.Write(bytes,bytes.Length); //bytes = null; System.IO.File.Delete(part); fs.Close(); } } } } catch (Exception) { throw; } //返回是否成功，此处做了简化处理 //return Json(new { Error = 0 }); } public bool IsReusable { get { return false; } } } }