filesize在ie8和ie9中不工作

下面是我的代码。

$("#aspNetForm").validate({
            rules: {
                txtManufacturerName: {
                    required: true
                },
                ddlStatus: {
                    selectstatus: true
                },
                file:
                                {
                                    requiredOnAdd: true,
                                    accept: 'jpg|gif|png|jpeg',
                                    filesize: 3145728
                                }
            },
            messages: {
                txtManufacturerName: {
                    required: "Kindly Enter  Name"
                },
                file: {
                    filesize: "Kindly Upload less than 3MB "
                }
            },
            onsubmit: false
        });

插入此记录页时不会触发filesize的验证。
请告诉我怎么做?
我使用MVC3 c#