验证 mvc 日期范围

  @Html.TextBoxFor(model => model.TicketBeginTime, Model.TicketBeginTime.ToString("yyyy/MM/dd"), new { @class = "textbox", style = "150px;", onfocus = "ticketBeginTime()" })

   @Html.TextBoxFor(model => model.TicketEndTime, Model.TicketEndTime.ToString("yyyy/MM/dd"), new { @class = "textbox", style = "150px;", onfocus = "ticketEndTime()" }) 

function saleBegintime() {
        WdatePicker({dateFmt:'yyyy/MM/dd',maxDate:'#F{$dp.$D(\'SaleEndTime\',\'TicketBeginTime\',{d:-0});}'});
    }
    function saleEndTime() {
        WdatePicker({ dateFmt: 'yyyy/MM/dd', minDate: '#F{$dp.$D(\'SaleBeginTime\',{d:-0});}'});
    }
    function ticketBeginTime() {
        WdatePicker({ dateFmt: 'yyyy/MM/dd', minDate: '#F{$dp.$D(\'SaleBeginTime\',{d:0});}', maxDate: '#F{$dp.$D(\'TicketEndTime\',{d:-1});}' });
    }
    function ticketEndTime() {
        var strDate1 = $("#SaleEndTime").val();
        var strDate2 = $("#TicketBeginTime").val();
        var date1 = Date.parse(strDate1);
        var date2 = Date.parse(strDate2);
        if (($("#SaleEndTime").val()) > ($("#TicketBeginTime").val())) {
            WdatePicker({ dateFmt: 'yyyy/MM/dd', minDate: '#F{$dp.$D(\'SaleEndTime\',{d:3});}' });
        }
        else {
            if ((date2 - date1) / (60 * 60 * 1000) <= 24) {
                WdatePicker({ dateFmt: 'yyyy/MM/dd', minDate: '#F{$dp.$D(\'SaleEndTime\',{d:3});}' });
            }
            if ((date2 - date1) / (60 * 60 * 1000) <= 48) {
                WdatePicker({ dateFmt: 'yyyy/MM/dd', minDate: '#F{$dp.$D(\'SaleEndTime\',{d:3});}' });
            } else {
                WdatePicker({ dateFmt: 'yyyy/MM/dd', minDate: '#F{$dp.$D(\'TicketBeginTime\',{d:1});}' });
            }
        }
    }