Request/Respond web service

Question

Hello,

 

I'm new to web services so I could use a little help.

 

I have a project that a web service will request data from me and I will respond with a web service giving the data. I've created the response web service as you can see below: 

 

Person.cs 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace TestWebServices
{
    public class Person
    {
        public string IdNo { get; set; }
        public string FirstName { get; set; }
        public string LastName { get; set; }
    }
}

[WebMethod]

[WebMethod(Description = "Return Applicants")]
publicPerson[] retApplicants(String idno)
{
    string connString =  ConfigurationManager.ConnectionStrings["conn"].ConnectionString;    SqlConnection connection = new SqlConnection(connString);

    SqlCommand command = new SqlCommand("selectApplicant", connection);
    command.CommandType = System.Data.CommandType.StoredProcedure;
    command.Parameters.Add("@idno", SqlDbType.VarChar).Value = idno;
    connection.Open();
    SqlDataReader reader = command.ExecuteReader();

    List<Person> persons = new List<Person>();
    Person persReturned;

    while (reader.Read())
    {
        persReturned = new Person();
        persReturned.IDNO = reader["IdNo"].ToString();
        persReturned.FirstName = reader["FirstName"].ToString();
        persReturned.LastName= reader["LastName"].ToString();
        persons.Add(persReturned);
    }

    return persons.ToArray();
}

 I tested it on my browser by invoking and it works fine. 

 

How can I make it respond to the requested idno from the other web service?

 

Thank you in advance.