// This is the web method.  Results are the same whether
// I decorate it with a WebMethod attribute or not.
[StringAttribute("blah")]
public string getResultCode()
{
  return mResult;
}

// StringAttribute is my custom attribute that I have used many times:
public class StringAttribute: System.Attribute
{
  private string mString;
  public StringAttribute(string s): base()
  {
    mString = s;
  }
  public override string ToString()
  {
    return mString;
  }
}

// I use this method to get the value of the StringAttribute passing
// the web service object and the method name "getResultCode".
// This works fine in all other instances including from within
// the web service itself.
// When I debug through this code, obj contains a
// WebMethod attribute when I add that additional attribute,
// but not my StringAttribute.
public static string getAttribValue(Object obj, string memberName)
{
  // I presume this is an array to account for overloaded methods...
  MemberInfo[] mi = obj.GetType().GetMember(memberName);
  if ( mi.Length > 0 )
  {
    foreach( MemberInfo currentMI in mi )
    {
      Attribute ca = Attribute.GetCustomAttribute(currentMI,
typeof(StringAttribute));
      if ( ca != null )
      {
        return attrToString( ca );
      }
    }
    return string.Empty;
  }
  else
  {
    return string.Empty;
  }

}