html 上传文件

  <form id="form1" action="TestYield" method="post" enctype="multipart/form-data">
    <div>
    
         <input type="text"  id="title" name="title"/>
        <input type="file"  id="file" name="file"/>

        <input type="submit"  value="提交" />
    </div>
    </form>

   HttpFileCollection hfc = Context.Request.Files;

            if (Request["title"] != null)
            {
                Response.Write(Request["title"]);
            }
            if (hfc.Count>0)
            {
                HttpPostedFile hf = Context.Request.Files["file"];

                Response.Write(hf.FileName);
            }
            else
            {
                Response.Write("is null");
            }
            return;