how to add hashtable in jquery

Hi,

I want to add key value pair like hashtable in jquery.

following is my code for adding key value pair to hashtable

$('#btnview').click(function (e) {
                e.preventDefault();


var vc = $('#ContentPlaceHolder1_txtvoucherid').val();
                    var type = $('#ContentPlaceHolder1_txtvtype').val();
                    var hashtable = {};
                    hashtable['tablename'] = "vchr";
                    hashtable['type'] = type;
                    hashtable['vchrid'] = vc;
                    $.ajax({
                        type: "POST",
                        contentType: "application/json; charset=utf-8",
                        url: "CashPaymentVoucher.aspx/dp",
                        data: "{'id':'"+hashtable+"'}",
                        dataType: "json",
                        success: function (data) {
                        }
                    });
});

and following is the webmethod in the next page

[WebMethod]
        public static VoucherDetails[] dp(Hashtable id )
        {
             List<VoucherDetails> details = new List<VoucherDetails>();
            i know this is wrong .and showing error .

my requirement is to pass hashtable to another page

like this
             
             
            BAL obj=new BAL();
            DataSet ds = obj.Getsearch(id);
            return details.ToArray();
        }

i know this is wrong .and showing error .

my requirement is to pass hashtable to another page

like this

DataSet ds = obj.Getsearch(id);

here id is the hashtable from aspx page

error showed was

{"Message":"Cannot convert object of type \u0027System.String\u0027 to type \u0027System.Collections
.Hashtable\u0027","StackTrace":"   at System.Web.Script.Serialization.ObjectConverter.ConvertObjectToTypeInternal
(Object o, Type type, JavaScriptSerializer serializer, Boolean throwOnError, Object\u0026 convertedObject
)\r\n   at System.Web.Script.Serialization.ObjectConverter.ConvertObjectToTypeMain(Object o, Type type
, JavaScriptSerializer serializer, Boolean throwOnError, Object\u0026 convertedObject)\r\n   at System
.Web.Script.Services.WebServiceMethodData.StrongTypeParameters(IDictionary`2 rawParams)\r\n   at System
.Web.Script.Services.WebServiceMethodData.CallMethodFromRawParams(Object target, IDictionary`2 parameters
)\r\n   at System.Web.Script.Services.RestHandler.InvokeMethod(HttpContext context, WebServiceMethodData
 methodData, IDictionary`2 rawParams)\r\n   at System.Web.Script.Services.RestHandler.ExecuteWebServiceCall
(HttpContext context, WebServiceMethodData methodData)","ExceptionType":"System.InvalidOperationException"

how to solve this

regards

Baiju