var data = { WizardPages: arrWizardPages, WizardChoices: arrWizardChoices }; $.ajax({ type: 'POST', url: 'services/WizardSRS.asmx/SaveWizardHistory', dataType: 'xml', 'data': data, success: function(data) { }); [WebMethod] public void SaveWizardHistory(string [] WizardPages,string [] WizardChoices) { m_ecomData = new EcomDataAdmin(Server.MapPath("/access_db/")); }