7
好这是一个扩展的问题Why do I need an IoC container as opposed to straightforward DI code?仍然需要帮助理解为什么Ninject可能会比手动DI
我一直在学习Ninject并用下面的例子上来，示例经过这样做的手工方式DI和Ninject做DI的方式：
class Program
{
static void Main(string[] args)
{
NinjectWay();
ManualWay();
Console.ReadKey();
}
private static void ManualWay()
{
Console.WriteLine("ManualWay***********************");
IWeapon sword = new Sword();
Samurai samurai = new Samurai(sword);
Console.WriteLine(samurai.Attack("ManualWay..."));
// change weapon
IWeapon dagger = new Dagger();
samurai.Weapon = dagger;
Console.WriteLine(samurai.Attack("ManualWay..."));
IWeapon weapon = new Shuriken();
IWarrior ninja = new Ninja(weapon);
Console.WriteLine("Manual way.. inject shuriken when a ninja. " + ninja.Weapon.Name);
IWarrior ninja2 = new Ninja(weapon);
}
private static void NinjectWay()
{
Console.WriteLine("NinjectWay***********************");
IKernel kernel = new StandardKernel();
kernel.Bind<IWeapon>().To<Sword>();
var samurai = kernel.Get<Samurai>();
Console.WriteLine(samurai.Attack("NinjectWay..."));
kernel.Rebind<IWeapon>().To<Dagger>();
samurai = kernel.Get<Samurai>();
Console.WriteLine(samurai.Attack("NinjectWay..."));
kernel.Bind<IWeapon>().To<Shuriken>().WhenInjectedInto<Ninja>();
var ninja = kernel.Get<Ninja>();
ninja.OffHandWeapon = new ShortSword();
Console.WriteLine("Conditional Injection..."+ninja.Weapon.Name);
Console.WriteLine("Conditional Injection: OffhandWeapon = " + ninja.OffHandWeapon.Name);
var ninja2 = kernel.Get<Ninja>();
Console.WriteLine("Conditional Injection..." + ninja2.Weapon.Name);
Console.WriteLine("Conditional Injection: OffhandWeapon = " + ninja2.OffHandWeapon.Name);
Console.WriteLine("");
}
}
我听说当项目的规模增加但是我没有看到它时会发生收益。帮助我更好地理解这一点。在C＃/ Ninject中提供更多示例，并帮助我理解哪些好处真的变得明显。