          data: jsonData,
                    dataType: "json",
                    contentType: "application/json; charset=utf-8",
                    success: function (data) {
                        $('#cboRap').html(data.d);
                        $("#cboRap").select2({
                            allowClear: true
                        });
                    },
                    error: function () {
                        alert("Error loading data! Please try again.");
               