IStrategyRegistry.cs

public class StrategyQuery
{
  public string Name { get; set; }
}

public interface IStrategy
{
  bool CanHandle(StrategyQuery query);
  void DoSomething();
}

public interface IStrategyRegistry
{
    IStrategy GetStrategyFor(StrategyQuery query);
}

public class NinjectStrategyRegistry : IStrategyRegistry
{
  private readonly IKernel kernel;
  
  public NinjectStrategyRegistry(IKernel kernel)
  {
    this.kernel = kernel;
  }
  
  public IStrategy GetStrategyFor(StrategyQuery query)
  {
    var instances = kernel.GetAll<IStrategy>();
    foreach (var instance in instances)
    {
      if (instance.CanHandle(query))
      {
        return instance;
      }
    }
    throw new InvalidOperationException(string.Format("Could not find strategy for {0}." query));
  }
}

Your strategy can do anything really. In this example, I'm using Ninject, but feel free to use any other IoC container. You can also do assembly scanning.