Return Anonymous Type from method in C#

Overview:

• System.Object in the only way to return an anonymous type from a method (because anonymous types are really anonymous).
• Anonymous  type is extremely useful in linq queries because it allow you to construct type with several properties without declaring the type .
• We have to use dynamic keyword to get return object ( anonymous type ) from method.

Example:

• public static object MyMethod()
   {
              return new { firstName = "Saniul", lastName = "Naim" };
   }
  
    static void Main(string[] args)
    {
              dynamic obj = MyMethod();
              Console.WriteLine(obj.firstName);
              Console.WriteLine(obj.lastName);
  
              Console.ReadLine();
     }                 

                                                                                                                                                                                                                                                                        

 Alternavite Idea:

• If we dont want to use dynamic keyword then we have to use casting.

               public static object MyMethod()
               {
                     return new { firstName = "Saniul", lastName = "Naim" };
               }

               static void Main(string[] args)
              {
                    object obj = MyMethod();

                     var varOjb = Cast(obj, new { firstName = "", lastName = "" });
                     Console.WriteLine("{0} {1}", varOjb.firstName, varOjb.lastName);

                     Console.ReadLine();
              }

              static T Cast<T>(object objParam, T typeName)
             {
                     return (T)objParam;
              }

Note:

•  Sometime Tuple is very useful:
  
  
  
          public static Tuple<string, string> TupleMethod()
          {
              return Tuple.Create("Saniul", "Naim");
          }
  
          static void Main(string[] args)
          {
              var obj = TupleMethod();
              Console.WriteLine(obj.Item1);
              Console.WriteLine(obj.Item2);
              Console.ReadLine();
          }