1 using System;
2 using System.Runtime.Serialization;
3 
4 namespace VersionTolerantSerializationTestLib
5 {
6 	[Serializable]
7 	public class Address
8 	{
9 		private string Street = "v4-Street";
10 		private string City = "v4-City";
11 		private string CountryCode = "v4-CountryCode";
12 
13 		[OptionalField (VersionAdded = 4)]
14 		private string PostCode;
15 
ToString()16 		public override string ToString () {
17 			return String.Format ("v4 obj {0} {1} {2}", Street, City, CountryCode);
18 		}
19 
20 	}
21 }
22