How to get the datas by the selected dropdown value

See more:

C#

.NET

Ajax

LINQ

jQuery

, +

i have already have a ajax jquery code to fetch the cust id in my code and that works fine but while i choose action i doesn't instead it fetch all action for the selected cust id

What I have tried:

This works fine

$.ajax({
               type: 'GET',
               url: '@Url.Action("GetReport", "Report")',
               dataType: 'json',
                data: { id: $("#ddl_Custid").val() },
               success: function (datas, status) {
                   var duplicate = [];

                   $("#ddl_Custid").append('<option value="-1">' + "-Select-" + '</option>');

                   $.each(datas, function (i, data) {
                       if (duplicate.indexOf(data.fld_cust_id) == -1) {
                           $("#ddl_Custid").append('<option value="' + data.fld_cust_id + '">' + data.fld_cust_id + '</option>');
                           duplicate.push(data.fld_cust_id);
                       }

                   });
               }

               });

But this Doesn't

$.ajax({
               type: 'GET',
               url: '@Url.Action("GetReport", "Report")',
               dataType: 'json',
                   data: { id: $("#ddl_Action").val() },
               success: function (datas, status) {
                   var duplicate = [];

                   $("#ddl_Action").append('<option value="-1">' + "-Select-" + '</option>');

                   $.each(datas, function (i, data) {
                       if (duplicate.indexOf(data.fld_action) == -1) {
                           $("#ddl_Action").append('<option value="' + data.fld_action + '">' + data.fld_action + '</option>');
                           duplicate.push(data.fld_action);
                       }

                   });
               }

           });

This the code part

responsedata = Elastic.Search<ProvLog>(s => s
                               .Index(defaultIndex)
                               .Size(8000)
                               .Query(q => q
                               .DateRange(r => r
                               .Field(p => p.fld_date)
                               .GreaterThanOrEquals(fromDate)
                               .LessThan(toDate)
                               .TimeZone("+05:30"))
                               && q.Match(m => m.Field(f => f.fld_cust_id).Query(fldCustid))
                               && q.Match(m => m.Field(f => f.fld_action).Query(fldAction))
                               )
                               .Sort(p => p.Descending("fld_date")));
                   data = (from hits in responsedata.Hits select hits.Source).ToList();