上传预览 easyui部分控件获取focuse 表单验证

js：

  $(document).ready(function () {

         //$('#creater').combobox({
         //    url: '/VMS.UI/BindData/ScheamData?type=26',
         //    dataType: 'json'

         //});

             $('#education').combobox({
                 url: '/VMS.UI/BindData/ScheamData?type=26',
                 dataType: 'json'
             });

             $('#job').combobox({
                 url: '/VMS.UI/BindData/ScheamData?type=24',
                 dataType: 'json',
                 value: '专职'
             });

             $('#station').combobox({
                 url: '/VMS.UI/BindData/ScheamData?type=29',
                 dataType: 'json'
             });

             $('#org').combotree({
                 url: '/VMS.UI/BindData/OrgData',
                 dataType: 'json',
                 idFiled: 'IID',
                 textFiled:'OrgName',
                 onLoadSuccess: function () {
                     $('#org').combotree('tree').tree("collapseAll");
                 },
                 onSelect: function (node) {
                     $('#dept').combobox({
                         url: '/VMS.UI/BindData/GetDepartments?deptID=' + node.id,
                         dataType: 'json',
                         valueField: 'IID',
                         textField: 'DeptName'
                     });
                 }
             });

         $(function () {
             $("#uploadpic").uploadPreview({
                 Img: "pic",
                 Width: 120,
                 Height: 120
             });
         });

         function formValidate() {
             var station = $('#station').combobox('isValid');
             var name = $('#name').validatebox('isValid');
             var cardNumber = $('#cardNumber').validatebox('isValid');
             var mobilePhone = $('#mobilePhone').numberbox('isValid');
             var org = $('#org').combotree('isValid');
             var dept = $('#dept').combobox('isValid');
             var drivingCertificate = $('input[name="DrivingCertificate"]').validatebox('isValid');
             if (!station) {
                 $('#station').combobox().next('span').find('input').focus()
                 return false;
             }
             if (!name) {
                 $('#name').focus();
                 return false;
             }
             if (!cardNumber) {
                 $('#cardNumber').focus()
                 return false;
             }
             if (!mobilePhone) {
                 $('#mobilePhone').focus()
                 return false;
             }
             if (!org) {
                 $('#org').combobox().next('span').find('input').focus()
                 return false;
             }
             if (!dept) {
                 $('#dept').combobox().next('span').find('input').focus()
                 return false;
             }
             if (!drivingCertificate) {
                 $('input[name="DrivingCertificate"]').focus()
             }
             return true;
         }

         $('#save').click(function () {
             if (formValidate()) {
                 $('#form_driverinfo').submit();
             }
         });

         $('#clear').click(function () {
             $.messager.confirm('确认对话框', '是否确定清空？', function (r) {
                 if (r) {
                     $('#form_driverinfo').form('reset');
                 }
             });
         });
     });

MVC:

 [HttpPost]
         public ActionResult AddVehicleDriver(VehicleDrivers driver)
         {
             if (driver.Picture != null)
             {
                 HttpPostedFileBase file = Request.Files["Picture"];
                 if (file != null)
                 {
                     driver.Picture = SaveImgAndGetPath(file);
                 }
             }
 }

  /// <summary>
         /// 保存图片并获取地址
         /// </summary>
         /// <param name="file">文件</param>
         /// <returns>返回路径</returns>
         private string SaveImgAndGetPath(HttpPostedFileBase file)
         {

             //设置文件名+获取文件扩展名
             string imgName = DateTime.Now.ToString("yyyyMMddHHmmss") + new Random().Next(1000, 9999).ToString() + Path.GetExtension(file.FileName);

             // 生成要存档的 文件路径和文件名
             string serverPath = System.Web.HttpContext.Current.Server.MapPath("~");
             string imgFullPath = Path.Combine(serverPath, @"UploadImage\driverImg\", imgName);
             //string imgPath = Path.Combine(Server.MapPath("/UploadImage/driverImg/"), imgName);

             //上传服务器
             file.SaveAs(imgFullPath);

             string imgRelativePath = System.Web.HttpContext.Current.Request.ApplicationPath + @"\UploadImage\driverImg\" + string.Format("{0}", imgName);

             return imgRelativePath;
         }

jqueryExtends:

 jQuery.fn.extend({
     uploadPreview: function (opts) {
         var _self = this, _this = $(this);
         opts = jQuery.extend({
             Img: "ImgPr",
             Width: 100,
             Height: 100,
             ImgType: ["gif", "jpeg", "jpg", "bmp", "png"],
             Callback: function () {
             }
         }, opts || {});
         _self.getObjectURL = function (file) {
             var url = null;
             if (window.createObjectURL != undefined) {
                 url = window.createObjectURL(file)
             } else if (window.URL != undefined) {
                 url = window.URL.createObjectURL(file)
             } else if (window.webkitURL != undefined) {
                 url = window.webkitURL.createObjectURL(file)
             }
             return url
         };
         _this.change(function () {
             if (this.value) {
                 if (!RegExp("\.(" + opts.ImgType.join("|") + ")$", "i").test(this.value.toLowerCase())) {
                     alert("选择文件错误,图片类型必须是" + opts.ImgType.join("，") + "中的一种");
                     this.value = "";
                     return false
                 }
                 if ($.browser.msie) {
                     try {
                         $("#" + opts.Img).attr('src', _self.getObjectURL(this.files[0]))
                     } catch (e) {
                         var src = "";
                         var obj = $("#" + opts.Img);
                         var div = obj.parent("div")[0];
                         _self.select();
                         if (top != self) {
                             window.parent.document.body.focus()
                         } else {
                             _self.blur()
                         }
                         src = document.selection.createRange().text;
                         document.selection.empty();
                         obj.hide();
                         obj.parent("div").css({
                             'filter': 'progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale)',
                             'width': opts.Width + 'px',
                             'height': opts.Height + 'px'
                         });
                         div.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = src
                     }
                 } else {
                     $("#" + opts.Img).attr('src', _self.getObjectURL(this.files[0]))
                 }
                 opts.Callback()
             }
         })
     }
 });