简单二进制上传下载文件

前端代码：

@model Business.Models.Model
@{
    ViewBag.Title = "上传文件";
}

<script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script>
<script type="text/javascript">
    var Input = {};
    Input.Save = function (e) {
        if ($("#id_file").val() == "") {
            alert("请选择文件！");
            return;
        }
 
        var frm = $(e).parents("form");
        $(".tabs-panels .panel:visible").find('#frmInput').submit();//frmInput为FormID
    };
 
    Input.SaveCallBack = function (result, desc) {
        if (result) {
            //刷新列表
            $('#tbList').datagrid('reload');
            alert("提交成功!");
            //关闭选项卡
            Common.CloseTab();
        }
        else {
            alert("保存失败，请重试！");
        }
    };
</script>
@using (Html.BeginForm("Action", "Controller", FormMethod.Post, new { enctype = "multipart/form-data", @id = "frmInput" }))
{
    <h6 class="tg-left tt-block title tgd-l">
        文件信息</h6>
    <div style="margin-top:50px;">
        <table class="tbl-input" cellspacing="0">
            <colgroup>
                <col style=" 400px;" />
                <col class="w5" style=" 400px;" />
                <col style=" 150px;" />
            </colgroup>
            <tbody>
                <tr>
                    <th scope="row">
                        @Html.LabelFor(model => model.ShotName):
                    </th>
                    <td>
                        @Html.TextBoxFor(model => model.ShotName, new { style = "300px;", @id = "id_ShotName" })
                    </td>
                    <td>
                        <span class=" btn-infomust">必填项</span>
                    </td>
                </tr>
                <tr>
                    <th scope="row">
                        文件：
                    </th>
                    <td>
                        <div id="files">
                            <input type="file" name="FileUpload1" id = "id_file"/><br />
                        </div>
                    </td>
                </tr>
            </tbody>
        </table>
    </div>
    <p class="op" style="text-align: center; margin-top: 50px; margin-bottom: 30px;">
        <input type="button" id="btnSave" onclick="Input.Save(this);" class="btn-8" value="保存"/>
        <input type="button" value="返回" onclick="Common.CloseTab(this);" class="btn-8" />
    </p>
}

后台：

namespace Ports.Controllers.Ports.Controllers
{
    [Description("附件管理")]
    public class AttachmentController : BaseController
    {
#region 文件上传
        /// <summary>
        /// 文件上传
        /// </summary>
        /// <returns></returns>
        /// 
        public ActionResult Create()
        {
            var model = new AttachmentModel { };
            return View("Create", model);
        }
 
        [HttpPost]
        public ActionResult Upload(AttachmentModel model)
        {
            //使用此控件会限制文件大小最大上传4m
            //可在web.config中配置<httpRuntime executionTimeout= "5400" maxRequestLength= "2048000"
            // useFullyQualifiedRedirectUrl= "false " /> , 自定义上传大小
　　　　　　　//详细见http://www.cnblogs.com/xcsn/archive/2012/12/26/2833442.html
 
            foreach (string upload in Request.Files)
            {
                if (!HasFiles.HasFile(Request.Files[upload])) continue;
 
                string miniType = Request.Files[upload].ContentType;
                string filename = Path.GetFileName(Request.Files[upload].FileName);
                //转换文件流成字节数组
                BinaryReader reader = new BinaryReader(Request.Files[upload].InputStream);
                byte[] fileData = reader.ReadBytes((int)reader.BaseStream.Length);
                model.ShotName = model.ShotName == null ? "默认名称" : model.ShotName;
                model.Author = "";
　　　　　　　　　　//插入
                AttachmentRule.Instance.Insert(model.ShotName, filename, miniType, fileData, model.Author, "");
            }
            return View("Index");
        }
        #endregion

        #region 文件下载
        /// <summary>
        /// 文件下载
        /// </summary>
        /// <param name="id">附件唯一标识</param>
        /// <returns></returns>
        public FileContentResult GetFile(int id)
        {//前台直接使用链接，点击自动下载
            var fileinfo = AttachmentRule.Instance.GetEntity(id);
            return File(fileinfo.FileData, fileinfo.MimeType, fileinfo.FileName);
        }
        #endregion
　　}
}
public static class HasFiles
{
    public static bool HasFile(this HttpPostedFileBase file)
    {
        return (file != null && file.ContentLength > 0) ? true : false;
    }
}