用WebService和javascript实例类似ajax的功能

        #endregion

        // WEB SERVICE EXAMPLE

        // The HelloWorld() example service returns the string Hello World

        // To build, uncomment the following lines then save and build the project

        // To test this web service, press F5

        [WebMethod]

        public string doSearch(string keyword)

        {

            //SqlConnection cn=new SqlConnection(ConfigurationSettings.AppSettings["pubs"]);