c# client-server class cast error.

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C#

serialization

casting

I am developing a client server application in C#.

I am sending from my server to client an object of `Student` type which I serialize on the server side and deserialize on client side. The serialization and deserialization are as follows :

// server side serialization.
Student s1 = new Student("Chuck","Noris");
BinaryFormatter binaryFormatter = new BinaryFormatter();
binaryFormatter.Serialize(writer.BaseStream, s1);

// client side deserialization.
1.BinaryFormatter bin = new BinaryFormatter();
2.Student s1 = (Student)bin.Deserialize(receive.BaseStream);
3.Console.WriteLine(s1.ToString());
and i get this error at runtime:
>[A]ServerClient.Student cannot be cast to [B]ServerClient.Student.
>Type A originates from 'Server, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' in >the context 'Default' at location >D:\Faculty\Workspace\C#\ServerClient\ServerClient\Server.exe'. Type B originates from >Client, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' in the context 'Default' at >location 'D:\Faculty\Workspace\C#\ServerClient\ServerClient\Client.exe'.

Also, if on the client side on line 2 I replace:

`Student s1 = (Student)bin.Deserialize(receive.BaseStream);`

with

Object s1 = bin.Deserialize(receive.BaseStream);
Console.WriteLine(s1.ToString());

everything works just fine, and the WriteLine method is printing toString represetation of object send it from server.

To create the Server.exe and Client.exe I used the following commands:

C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe Server.cs Repository.cs Student.cs
C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe Client.cs Student.cs
and I get no errors or warning.
Also my `Student` class have the `[Serialization]` attribute.
I did searched the web for this kind of errors but i couldn't find anything usefull


Later Edit(adding more code).After simplyfing my code so that it just send an serialize object from server to client where that object is deserilizeed, looks as follows:

//server side -sending part

Student s1 = new Student(23, "alex", "dimofte", "Sergent Hategan", "23.04.2013");
     List> note = new List>();
     Tuple n1 = new Tuple("Analiza", 8);
     Tuple n2 = new Tuple("Algebra", 4);
     Tuple n3 = new Tuple("Romana", 9);
     Tuple n4 = new Tuple("Sport", 8);
     Tuple n5 = new Tuple("Analiza", 8);
     Tuple n6 = new Tuple("Algebra", 4);

     note.Add(n1);
     note.Add(n2);
     note.Add(n3);
     note.Add(n4);
     note.Add(n5);
     note.Add(n6);

     s1.Grades = note;
     BinaryFormatter binaryFormatter = new BinaryFormatter();
     binaryFormatter.Serialize(writer.BaseStream, s1);

     writer.AutoFlush = true

;

//where writer is constructed :
StreamReader reader = new StreamReader(this.clientSocket.GetStream()); // clientSocket is the connected client

//client side -receiving part

this.send.AutoFlush = true;

BinaryFormatter bin = new BinaryFormatter();
//Student s = (Student)bin.Deserialize(receive.BaseStream); // this don't work
Object s = bin.Deserialize(receive.BaseStream);  // this works
Console.WriteLine(s.ToString());  // with s of type Object it prints what is supposed
Console.ReadLine();