C#实现文件上传以及多文件上传功能

<httpRuntime targetFramework="4.5" executionTimeout="500" maxRequestLength="409600" useFullyQualifiedRedirectUrl="false" minFreeThreads="8" minLocalRequestFreeThreads="4" appRequestQueueLimit="100" /><!-- maxRequestLength属性是上传文件大小的设置 值是kb大小 maxRequestLength=“1024” 为最大上传1M -->

/// <summary>  /// 文件上传页面  /// </summary>  /// <returns></returns>  public ActionResult FileUpdateView()  {   return View();  }  /// <summary>  /// 文件处理方法  /// </summary>  /// <param name="filedata"></param>  /// <returns></returns>  public ActionResult UploadifyFile(HttpPostedFileBase filedata)  {   if (filedata == null ||    String.IsNullOrEmpty(filedata.FileName) ||    filedata.ContentLength == 0)   {    return HttpNotFound();   }   string filename = System.IO.Path.GetFileName(filedata.FileName);   string virtualPath = String.Format("~/File/{0}", filename);   string path = Server.MapPath(virtualPath);   // 以下注释的代码 都可以获得文件属性   // System.Diagnostics.FileVersionInfo info = System.Diagnostics.FileVersionInfo.GetVersionInfo(path);   // FileInfo file = new FileInfo(filedata.FileName);   filedata.SaveAs(path);   return null;  }　

<script src="~/Scripts/jquery-1.10.2.js"></script><script src="~/Scripts/lib/layer/layer.js"></script><link href="~/Scripts/lib/uploadify/uploadify.css" rel="external nofollow" rel="stylesheet" /><script src="~/Scripts/jquery-1.10.2.min.js"></script><script src="~/Scripts/lib/uploadify/jquery.uploadify.min.js"></script>

<script type="text/javascript"> var uploadifyOnSelectError; var uploadifyOnUploadError; var uploadifyOnSelect; var uploadifyOnUploadSuccess; uploadifyOnSelectError = function (file, errorCode, errorMsg) {  var msgText = "上传失败/n";  switch (errorCode) {   case SWFUpload.QUEUE_ERROR.QUEUE_LIMIT_EXCEEDED:    //this.queueData.errorMsg = "每次最多上传 " + this.settings.queueSizeLimit + "个文件";    msgText += "每次最多上传 " + this.settings.queueSizeLimit + "个文件";    break;   case SWFUpload.QUEUE_ERROR.FILE_EXCEEDS_SIZE_LIMIT:    msgText += "文件大小超过限制( " + this.settings.fileSizeLimit + " )";    break;   case SWFUpload.QUEUE_ERROR.ZERO_BYTE_FILE:    msgText += "文件大小为0";    break;   case SWFUpload.QUEUE_ERROR.INVALID_FILETYPE:    msgText += "文件格式不正确，仅限 " + this.settings.fileTypeExts;    break;   default:    msgText += "错误代码：" + errorCode + "/n" + errorMsg;  }  layer.msg(msgText); }; uploadifyOnUploadError = function (file, errorCode, errorMsg, errorString) {  // 手工取消不弹出提示  if (errorCode == SWFUpload.UPLOAD_ERROR.FILE_CANCELLED   || errorCode == SWFUpload.UPLOAD_ERROR.UPLOAD_STOPPED) {   return;  }  var msgText = "上传失败/n";  switch (errorCode) {   case SWFUpload.UPLOAD_ERROR.HTTP_ERROR:    msgText += "HTTP 错误/n" + errorMsg;    break;   case SWFUpload.UPLOAD_ERROR.MISSING_UPLOAD_URL:    msgText += "上传文件丢失，请重新上传";    break;   case SWFUpload.UPLOAD_ERROR.IO_ERROR:    msgText += "IO错误";    break;   case SWFUpload.UPLOAD_ERROR.SECURITY_ERROR:    msgText += "安全性错误/n" + errorMsg;    break;   case SWFUpload.UPLOAD_ERROR.UPLOAD_LIMIT_EXCEEDED:    msgText += "每次最多上传 " + this.settings.uploadLimit + "个";    break;   case SWFUpload.UPLOAD_ERROR.UPLOAD_FAILED:    msgText += errorMsg;    break;   case SWFUpload.UPLOAD_ERROR.SPECIFIED_FILE_ID_NOT_FOUND:    msgText += "找不到指定文件，请重新操作";    break;   case SWFUpload.UPLOAD_ERROR.FILE_VALIDATION_FAILED:    msgText += "参数错误";    break;   default:    msgText += "文件:" + file.name + "/n错误码:" + errorCode + "/n"     + errorMsg + "/n" + errorString;  }  layer.msg(msgText); }; uploadifyOnSelect = function () { }; uploadifyOnUploadSuccess = function (file, data, response) {  layer.msg(file.name + "/n/n" + response + "/n/n" + data); }; $(function () {  $("#uploadify").uploadify({   uploader: '/PageBase/UploadifyFun', //处理上传的方法   swf: '/Scripts/lib/uploadify/uploadify.swf',   width: 80, // 按钮宽度   height: 60, //按钮高度   buttonText: "上传文件",   buttonCursor: 'hand',   fileSizeLimit:20480,   fileobjName: 'Filedata',   fileTypeExts: '*.xlsx;*.docx', //扩展名   fileTypeDesc: "请选择xslx,docx文件", //文件说明   auto: false, //是否自动上传   multi: true, //是否一次可以选中多个文件   queueSizeLimit: 5, //允许同时上传文件的个数   overrideEvents: ['onSelectError', 'onDialogClose'], // 是否要默认提示 要就不配置   onSelect: uploadifyOnSelect,   onSelectError: uploadifyOnSelectError,   onUploadError: uploadifyOnUploadError,   onUploadSuccess: uploadifyOnUploadSuccess  }); });</script><span id="uploadify"></span><div> <a href="javascript:$('#uploadify').uploadify('upload','*');">上传</a> <a href="javascript:$('#uploadify').uploadify('cancel', '*');">取消</a></div>