function ReImport(id) { //点击按钮时调用函数名称，

        var node = document.getElementById('bindingNode'); //bindingNode 为内部绑定订单子项的div或是table id，每次html(data)后会重新建立

        if (node) {

            $(node).unbind();

            $(node).find("*").each(function () {

                $(this).unbind();

            });

            ko.removeNode(node);//解绑

        }

        //http://localhost:7486/Order/EditByIndex?id=61521

        $("#orderdetalis").html('');

        $.get('@Url.Action("EditByIndex")', { id: id, r: Math.random() }, function (data) { //此处action中包含了<div id="bindingNode">

            $("#orderdetalis").html(data); //此处orderdetails为本页面的一个div id 注意，如有错误 jquery html（）方法不执行

            $("#myModal").modal();

            var node_new = document.getElementById('bindingNode');  //此处bindingNode因为被remove掉，必须再次查找后 绑定到对像

            ko.applyBindings(obj1, node_new);

        })

    }

 function AppViewModel() {

        var self = this;

        self.OrderItems = ko.observableArray([]);

        self.removeOrderItem = function () {

            if (confirm('确认删除吗?')) {

                self.OrderItems.remove(this);

            }

        }

        self.addOrderItem = function () {

            push({ 'ProductName': '', 'ProductCode': '', 'Price': 0, 'Quality': 1 });

        }

        self.TotalAmount = ko.computed(function () {

            var amount = 0;

            var array = self.OrderItems();

            for (var i = 0 ; i < array.length; i++) {

                var price = getFloat(array[i].Price());

                var quality = getFloat(array[i].Quality());

                amount += Math.formatFloat(quality * price, 2);

            }

            return "总金额：" + Math.formatFloat(amount, 2).toString();

        }, this);

    }

    var obj1 = new AppViewModel();

    function push(obj) {

        var itemModel = function (item) {

            var self = this;

            self.ProductName = ko.observable(item.ProductName);

            self.ProductCode = ko.observable(item.ProductCode);

            self.ImportStore = ko.observable(item.ImportStore);

            self.Price = ko.observable(item.Price);

            self.Quality = ko.observable(item.Quality);

        };

        obj1.OrderItems.push(new itemModel(obj));

    }

    function buildArray(array) {

        obj1.OrderItems([]);

        for (var i = 0 ; i < array.length ; i++) {

            push(array[i]);

        }

    }