Error : Not all code paths return a value

[fretIT]

Hello,

when I write web method using C# in Visual basic 2005,
I can't return the string value to the client request.
I got such kind of error Not all code paths return a value.
Don't know how to cope that problem.

My code is as follow.

Thanks in advance

using System;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;

[WebService(Namespace = "http://www.tp.edu.sg/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class CountryLanguage : System.Web.Services.WebService
{
    public CountryLanguage()
    {

        //Uncomment the following line if using designed components 
        //InitializeComponent(); 
    }

[WebMethod(Description = "Return official language of particular country.")]
    public string OfficialLanguage(string country)
    {
        string l = "Singapore"; string r = "English";
       //if(l.CompareTo(country)==0)
        int res = String.Compare(country,l);
        if (res == 0)
        {
            return r;
        }
    }

[chroot]

Your function has a return value (string). The function must return a value in any case. Now if the program doesn't enter your if, it will reach the end of the function, where there's no return value => error.

The compiler is smart enough for this, though:

int abs(n) {
if (n > 0)
  return n;
else
  return -n;
}

There's something returned in any case, so the compiler won't complain.