function UpdateData()
 {

$("#form1").validate();

var txtName = $("#txtName").val();
var txtEmail = $("#txtEmail").val();
var txtSurName = $("#txtSurName").val();
var txtMobile = $("#txtMobile").val();
var txtAddress = $("#txtAddress").val();
var empId = $("#hdField").val();
var File1 = $("#hdnImage").val();
var ddlCountry = $("#ddlCountry option:selected").text();
var ddlState = $("#ddlState option:selected").text();
var ddlCity = $("#ddlCity option:selected").text();
var SelGender = $('input[name=rdBtn]:checked').val();
var Filepath = "/User_Registration1/upload/" + File1;


$.ajax({
    type: "POST",
    url: location.pathname + "/UpdateMethod",
    data: "{Name:'" + txtName + "',SurName:'" + txtSurName + "',Email:'" + txtEmail + "',Mobile:'" + txtMobile + "',Address:'"
     + txtAddress + "',Country:'" + ddlCountry + "',State:'" + ddlState + "',City:'" + ddlCity + "',EmpId:'" + empId + "',File:'" + Filepath + "',Gender:'" + SelGender + "'}",
    contentType: "application/json; .........so on..!!!

if($("#form1").valid()
    {
    $.ajax({
    type: "POST",
    url: location.pathname + "/UpdateMethod",
    data: $(form).serialize(),
    ....
}