NInject simplest example doesn't work - plugins

Question

I've got three projects:
UI
PluginManager
PluginOne
PluginTwo
Inside my Plugin Manager a create a simple plugin interface:
public interface IPlugin<T>
{
void sayMessage(T message);
T createMessage();
}
So, in my other projects I've two IPlugin implementation:
In porject PluginOneProject -->
-------------------------------
public class PluginOne : IPlugin<IntMessage>
{
public void sayMessage(IntMessage message)
{
System.Console.WriteLine(message.ToString());
}
}
where:
public class IntMessage
{
private int message;
public IntMessage(int message)
{
this.message = message;
}
public override string ToString()
{
return this.message.ToString();
}
}
In porject PluginTwoProject -->
-------------------------------
public class PluginTwo : IPlugin<StringMessage>
{
public void sayMessage(StringMessage message)
{
System.Console.WriteLine(message.ToString());
}
}
where:
public class StringMessage
{
private String message;
public StringMessage(String message)
{
this.message = message;
}
public override string ToString()
{
return this.message.ToString();
}
}
Obviously, I've added the corresponding project references.
So, in my UI porject I've NInject, and I perform this convention mapping:
kernel.Bind(b => b.FromAssembliesMatching("*")
.SelectAllClasses()
.InheritedFrom(typeof(IPlugin<>))
.BindAllInterfaces()
);
The graph is built correctly.
So, I don't know how to get an instance of PluginOne, or PluginTwo from UI project.
I'm trying to use this code, however, I've a problem with generic interfaces...
foreach (IPlugin<?> plugin in kernel.GetAll(typeof(IPlugin<>)))
{
plugin.sayMessage(plugin.createMessage());
}

Answer 1

Unfortunately, you must request a specific interface from Ninject, so you must request either IPlugin<IntMessage> or IPlugin<StringMessage>.
I would suggest trying to refactor your app so that you can request a more generic interface, such as IPlugin, and/or create a message interface like IMessage that each message implements. It's not clear from your question what you're trying to accomplish.