Question

i build a web service with Visual Studio 2010. the Language is C# and ASP.NET 3.5.

the Webserver sends the data from my ms sql server 2008 to an iPhone with JSON format.

but i receive one string value with all the data from SQL Server.
i want that the web service sends me the data separate so that i can consume it better on the iPhone.

here is my c# class:

   namespace WebService1
{
    public class RaumklassenHelper
    {



        internal static string Raumklasse()
        {
            string raumKlassenObject = "";

            using (SqlConnection con = new SqlConnection(@"Data Source=Localhost\SQLEXPRESS;Initial Catalog=BOOK-IT-V2;Integrated Security=true;"))
            using (SqlCommand cmd = new SqlCommand(@"SELECT BEZEICHNUNG FROM RAUMKLASSE", con))
            {

                con.Open();
                using (SqlDataReader rdr = cmd.ExecuteReader())
                {


                    while (rdr.Read())
                    {
                        if (rdr["BEZEICHNUNG"]  != DBNull.Value)
                         {

                              raumKlassenObject += rdr["BEZEICHNUNG"].ToString();
                         }

                    }


                }
            }

            return raumKlassenObject;
        }
    }
}

here is my web method:

[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
        [WebMethod]
        public string Raumklasse()
        {
            return RaumklassenHelper.Raumklasse();
        }

how can send the strings spereate ?

Answer 1

You could return an array:

[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
[WebMethod]
public string[] Raumklasse()
{
    return RaumklassenHelper.Raumklasse();
}

and then obviously adapt the data retrieval method:

public class RaumklassenHelper
{
    internal static string[] Raumklasse()
    {
        List<string> raumKlassenObject = new List<string>();

        using (SqlConnection con = new SqlConnection(@"Data Source=Localhost\SQLEXPRESS;Initial Catalog=BOOK-IT-V2;Integrated Security=true;"))
        using (SqlCommand cmd = new SqlCommand(@"SELECT BEZEICHNUNG FROM RAUMKLASSE", con))
        {
            con.Open();
            using (SqlDataReader rdr = cmd.ExecuteReader())
            {
                while (rdr.Read())
                {
                    if (rdr["BEZEICHNUNG"] != DBNull.Value)
                    {
                        raumKlassenObject.Add(rdr["BEZEICHNUNG"].ToString());
                    }
                }
            }
        }
        return raumKlassenObject.ToArray();
    }
}