CREATE table T 
(
	id INT IDENTITY (1,1) PRIMARY KEY,
	Name NVARCHAR(1000)
)

 function showrow(txtboxobject,guidobject,typedata) {
        $(txtboxobject).autocomplete({
            source: function (request, response) {
                $.ajax({
                    url: '<%=ResolveUrl("~/getrowservice.asmx/GetCustomers") %>',
                    data: "{ 'searchTerm': '" + request.term + "', 'typedata': '" + typedata + "'}",
                    dataType: "json",
                    type: "POST",
                    deferRequestBy: 900,
                    contentType: "application/json; charset=utf-8",
                    success: function (data) {
                        response($.map(data.d, function (item) {
                            return {
                                label: item.split('[~~]')[0],
                                val: item.split('[~~]')[1]
                            }
                        }))
                    },
                    error: function (response) {
                        alert(response.responseText);
                    },
                    failure: function (response) {
                        alert(response.responseText);
                    }
                });
            },
            select: function (e, i) {
                $(guidobject).val(i.item.val);
            },
            minLength: 0
        });
    }
    $(document).ready(function () { showrow("#<%=txtSearch.ClientID %>", "#<%=hfCustomerId.ClientID %>", "userStaff") });

            select: function (e, i) {
                $(guidobject).val(i.item.val);
                $(txtboxobject).disabled = true;
            },