NInject为每个类型参数的实现实现绑定通用接口

Question

I bind generic interface to its implementations:

class Program
{
    static void Main(string[] args)
    {
        IKernel kernel = new StandardKernel();

        kernel.Bind<ICreator<bool>>().To<BoolCreator>().InSingletonScope();
        kernel.Bind<ICreator<int>>().To<IntCreator>().InSingletonScope();
        kernel.Bind<ICreator<string>>().To<StringCreator>().InSingletonScope();

        Console.WriteLine(kernel.Get<ICreator<bool>>().Create());
        Console.WriteLine(kernel.Get<ICreator<int>>().Create());
        Console.WriteLine(kernel.Get<ICreator<string>>().Create());
    }
}

interface ICreator<T>
{
    T Create();
}

class BoolCreator : ICreator<bool>
{
    public bool Create() => true;
}

class IntCreator : ICreator<int>
{
    public int Create() => 123;
}

class StringCreator : ICreator<string>
{
    public string Create() => "abc";
}

When a new class is added, it also have to be binded manually. Is there way to bind it automatically? I tried this:

        kernel.Bind(scanner => scanner
            .FromThisAssembly()
            .SelectAllClasses()
            .InheritedFrom(typeof(ICreator<>))
            .BindSingleInterface()
            .Configure(b => b.InSingletonScope()));

but is does not work.

Thanks.

Answer 1

Convention based binding works only on types that are public. Your types are by default internal as they have no access modifier. Make them public and your binding will work.