Im relatively new to C# and am not sure if this is possible using this platform. I wish to have a program which is able to pull arbitrary classes from a remote server and use them to extend functionality of the program.
I am testing with two seperate projects, one contains a program which contains about 20 classes derived from a single abstract class which have been serialized individually.
The other project contains a program which has a definition of the abstract base class and attempts to deserialize the derived classes from the remote location in order to extend functionality
I am unable to get the deserializing program to be able to successfully deserialize and execute any of the derived classes.
//the files in Project1
//ABC file
namespace Project1
{
[Serializable]
public abstract class BaseClass
{
public abstract void RunAndWait();
}
}
//Derived class file
namespace Project1
{
[Serializable]
public class DerivedClass : BaseClass
{
public abstract void RunAndWait()
{
//do stuff here
}
}
}
//Serialize file contents
namespace Project1
{
public class SerializeClass
{
public static void Serialize(BaseClass c)
{
string path = "/some/path/DERIVEDCLASS.bin"
IFormatter formatter = new BinaryFormatter();
Stream stream = new FileStream(path,FileMode.Create,FileAccess.Write);
formatter.Serialize(stream, c);
stream.Close();
}
}
}
In another project I wish to be able to dynamically extend the functionality of the program by deserializing classes as needed.
//the files in project2
//ABC file in project2
namespace Project2
{
[Serializable]
public abstract class BaseClass
{
public abstract void RunAndWait();
//stuff goes here
}
}
//main file in project2
namespace Project2
{
class Program
{
static void Main(string[] args)
{
string readfile = "/some/path/DERIVEDCLASS.bin";
FileStream fs = new FileStream(readfile, FileMode.Open);
try
{
BinaryFormatter formatter = new BinaryFormatter();
formatter.Binder = new PreMergeToMergedDeserializationBinder();
/*this is what fails*/
BaseTechClass c = (BaseTechClass) formatter.Deserialize(fs);
c.RunAndWait();
}
catch (SerializationException e)
{
Console.WriteLine("Failed. Reason: " + e.Message);
throw;
}
finally
{
fs.Close();
}
}
}
}
//Read i needed to do a serialization binder to rename the assembly
sealed class PreMergeToMergedDeserializationBinder : SerializationBinder
{
public override Type BindToType(string assemblyName, string typeName)
{
Type typeToDeserialize = null;
String exeAssembly = Assembly.GetExecutingAssembly().FullName;
Console.WriteLine("exeAssembly is: "+exeAssembly);
typeToDeserialize = Type.GetType(String.Format("{0}, {1}",
typeName, exeAssembly));
Console.WriteLine("type is: "+typeToDeserialize.ToString());
return typeToDeserialize;
}
}
I am getting errors such as
Failed to deserialize. Reason: Unable to find assembly
I could use some guidance as to what is going wrong. the assembly renaming is not working and I am unsure if what i want to do is even possible in C# without include the entire DLL that has every derived class definition I want to de serialize and use.
