Bind Grid using JSON

See more:

ASP.NET

$(function () {               
                $.ajax({
                    type: "POST",
                    url: "ListOfAvailableProjectforEngineer.aspx/GetAvailable",
                    data: "{userid:'<%=Session["userid"].ToString()%>'}",
                    contentType: "application/json; charset=utf-8",
                    dataType: "json",
                    success: OnSuccess,
                    failure: function (response) {
                        alert(response.d);
                    },
                    error: function (response) {
                        alert(response.d);
                    }
                });
            });      
        function OnSuccess(response) {
            var xmlDoc = $.parseXML(response.d);
            var xml = $(xmlDoc);          
            var customers = xml.find("Table");
            i = 1;
            var row = $("[id*=gvViewProject] tr:last-child").clone(true);
            $("[id*=gvViewProject] tr").not($("[id*=gvViewProject] tr:first-child")).remove();
            $.each(customers, function () {
                var customer = $(this);               
                $("td", row).eq(0).html(i++);
                $("td", row).eq(1).html($(this).find("projectId").text());
                $("td", row).eq(2).html($(this).find("ProjectTitle").text());
                $("td", row).eq(3).html($(this).find("ExpectedDays").text());
                $("td", row).eq(4).html($(this).find("CustomerTypeName").text());
                $("td", row).eq(5).html($(this).find("CountryName").text());
                $("td", row).eq(6).html($(this).find("priority").text());
                $("[id*=gvViewProject]").append(row);
                row = $("[id*=gvViewProject] tr:last-child").clone(true);
                var autoId = $(this).find("projectId").text();
            });    }
    </script>

And using Webservice

//----------------------------------------------------web Service for ListOf Availabel project  Gridview----------------------------------------------------//

    [System.Web.Services.WebMethod]
    [ScriptMethod(ResponseFormat = ResponseFormat.Json)]
    public static string GetAvailable(int userid)
    {
        DataSet ds = UserClass.LoadEngineerWithProject(userid);
        return ds.GetXml();
    }

but I have a problem when we navigate through next page then project id is not pass to other page .
please give me Suggestion .thanks in advance.