jquery autocomplete 中文乱码解决办法

jquery.autocomplete.js

 $.ajax({
                    // try to leverage ajaxQueue plugin to abort previous requests
                    mode: "abort",
                    // limit abortion to this input
                    port: "autocomplete" + input.name,
                    dataType: options.dataType,
                    url: options.url,
                    data: $.extend({
                    q: encodeURI(lastWord(term)),
                        limit: options.max
                    }, extraParams),
                    success: function(data) {
                        var parsed = options.parse && options.parse(data) || parse(data);
                        cache.add(term, parsed);
                        success(term, parsed);
                    }
                });

c# 后台接收代码，我用的是ASHX文件

string q=System.Web.HttpUtility.UrlDecode(context.Request["q"].ToString(), UTF8Encoding.UTF8);

前台实例

 $(function() {
            $("#ctl00_ContentPlaceHolder2_TextBoxen").autocomplete("../getemployee.ashx", {
                delay: 5,
                matchCase: false,
                selectFirst: true,
                cacheLength: 3,
                matchSubset:false,
                minChars: 0,     //最少输入字条
                max: 12,
                autoFill: false,    //是否选多个,用","分开
                mustMatch: false,    //是否全匹配, 如数据中没有此数据,将无法输入
                matchContains: true,   //是否全文搜索,否则只是前面作为标准
                scrollHeight: 220,
                500,
                multiple: false,
                parse: function(data) {  //重写格式化得到的json集合因为原有方法无法解析通过webservice回调的值                   
                    var rows = new Array();
                    var datas = data;
                    for (var i = 0; i < datas.length; i++) {
                        //alert(datas[i])
                        rows[i] = { data: datas[i], employeename: datas[i].employeename, unitname: datas[i].department };
                    }
                    return rows;
                },

                formatItem: function(row, i, max) {     //显示格式
                    return "<span style='140px'>" + row.employeename + "</span>&nbsp;&nbsp;&nbsp;&nbsp;<span style='120px'>" + row.department + "</span>";
                },
                formatMatch: function(row, i, max) {    //以什么数据作为搜索关键词,可包括中文,
                    return row.employeename;

                },
                formatResult: function(row) {      //返回结果
                    return row.employeename;
                }
            });

            $("#ctl00_ContentPlaceHolder2_TextBoxen").result(function(event, row, formatted) {    //额外触发,可不要
                $("#ctl00_ContentPlaceHolder2_TextBoxen").val(row.employeename);
                $("#ctl00_ContentPlaceHolder2_TextBoxeid").val(row.employeeid);
                $("#ctl00_ContentPlaceHolder2_TextBox1").val(row.cardnum);
                $("#ctl00_ContentPlaceHolder2_TextBoxdepart").val(row.department);
                $("#ctl00_ContentPlaceHolder2_TextBoxL").val(row.carnum);
                $("#ctl00_ContentPlaceHolder2_TextBoxDriver").val(row.cardriver);
                $("#ctl00_ContentPlaceHolder2_TextBoxunit").val(row.unit.split('/')[2]);
                if (row.carnum.length != 0 || row.cardriver.length != 0) {
                    $("#ctl00_ContentPlaceHolder2_CheckBoxCar").attr("checked", "checked");
                }
                $("#ctl00_ContentPlaceHolder2_CheckBoxPeople").attr("checked", "checked");
                //更多操作
            });

        })