C#

	[Serializable]
	public class Animal
	{
		public string str
		{
			get;
			set;
		}
	}

	[Serializable]
	public class Dog : Animal
	{
		[NonSerialized]  <code>//<-- Optional!</code>
		public Int32 A;

		[NonSerialized]  <code>//<-- Optional!</code>
		public Int32 B;

		public Dog()
		{
			A = 5;
			B = 10;
		}
	}

	sealed class DogToAnimalDeserializationBinder : SerializationBinder
	{
		public override Type BindToType(string assemblyName, string typeName)
		{
			Type typeToDeserialize = null;

			String assemVer1 = Assembly.GetExecutingAssembly().FullName;
			String typeVer1 = "Dog";

			if (assemblyName == assemVer1 && typeName == typeVer1)
			{
				typeName = "Animal";
			}

			// The following line of code returns the type.
			typeToDeserialize = Type.GetType(String.Format("{0}, {1}",
				typeName, assemblyName));

			return typeToDeserialize;
		}
	}

...

Dog dog = new Dog();
dog.A = 3;
dog.B = 5;
dog.str = "Animal String";

MemoryStream MemStream = new MemoryStream();

// Serialize a Dog object
BinaryFormatter Serializer = new BinaryFormatter();
Serializer.Serialize(MemStream, dog);

MemStream.Seek(0, SeekOrigin.Begin);

// Deserialize as an Animal object
Serializer.Binder = new DogToAnimalDeserializationBinder();
Animal animal = (Animal)Serializer.Deserialize(MemStream); 

Mark Salsbery
Microsoft MVP - Visual C++

mav.northwind wrote:

The other side of the line (where the object is supposed to be deserialized)
doesn't know about Dogs, it only knows about Animals (i.e. there's
only the assembly defining Animal available, not the one defining Dog,
so trying to deserialize this object will throw a TypeLoadException).

Mark Salsbery
Microsoft MVP - Visual C++

inerp wrote:

ASAP please. Thanks.

Deepak the Cool wrote:

it is not possible to create the webservice object and call it into the static function because static call only static class and method

Deepak the Cool wrote:

Can I create an object as static as the point of oops or this is good for the project.

matixsc wrote:

- Class must inform user about exception in user friendly way.

Giorgi Dalakishvili wrote:

log4net is also worth considering.