问题描述
我尝试使用Ninject创建aplication。我有一个设置的MainForm 和对话的形式。我应该如何实现呢？应的MainForm 有一个内核实例，然后创建 SettingsForm 与获取LT; SettingsForm>（）的方法？还是应该的MainForm 构造与 SettingsForm 实例参数？
I try to create aplication with Ninject. I have one MainForm and dialog form for settings. How should i implement this? Should MainForm have a Kernel instance and then create SettingsForm with Get<SettingsForm>() method? Or should MainForm constructor have parameter with SettingsForm instance?
我试图找到ninject WinForm应用程序的一些例子，但我只发现这是在Visual C＃2008 Express的无用某些ASP.NET应用程序。
I tried find some example of WinForm application with ninject, but i found only some ASP.NET applications which are useless in Visual C# 2008 express.
推荐答案
我会做的依赖是在表单到表单级别。你想拥有在介于两者之间。
I would make the dependency be at the form-to-form level. You want to have something in between that.
namespace Example
{
public class SettingsRepository
{
public SettingsRepository()
{
}
}
public class SettingsForm
{
private SettingsRepository _settingsRepository;
public SettingsForm( SettingsRepository settingsRepository )
{
_settingsRepository = settingsRepository;
}
}
public class MainForm
{
private SettingsRepository _settingsRepository;
private Func<SettingsForm> _createSettingsForm;
public MainForm( Func<SettingsForm> createSettingsForm, SettingsRepository settingsRepository )
{
_createSettingsForm = createSettingsForm;
_settingsRepository = settingsRepository;
}
}
}
然后你注入 Func键< SettingsForm> 到类去除容器直接使用/内核从您的代码（如果你正在做内联获取呼吁所有的地方，你在做服务定位，这是一个不同的事情完全DI）。
Then you inject a Func<SettingsForm> into your class to remove the direct usage of the container / Kernel from your code (if you're doing inline Get calls all over the place, you're doing Service Location, which is a different thing to DI entirely).
public class ExampleNinjectModule : NinjectModule
{
public override void Load()
{
Bind<Func<SettingsForm>>().ToMethod( context => () => context.Kernel.Get<SettingsForm>() );
}
}
另一种方法是添加内核来构造函数ARGS（Ninject自动解决），但迅速成为一般一团糟。
Another approach is to add a Kernel to your constructor args (Ninject automatically resolves it), but that quickly becomes a mess in general.
我试过一个快速搜索样本，但可悲的是剪掉迅速在的WinForms空间发现任何东西。 。我建议也许寻找WPF的例子，而不是
I tried a quick search for samples, but sadly didnt find anything quickly in the WinForms space. I'd suggest perhaps looking for WPF examples instead.
底线是，你不会出大错，如果你：
Bottom line is you wont go far wrong if you:
- 坚持使用构造器注入，避免内核或容器的属性直接使用您的真实代码尽可能
- 不要使用全局内核和/或服务定位
更新09月12日：这一天肯定会聘请Ninject.Extensions.Factory来管理工厂（即大部分代码将上面会自动genned幕后）
Update Sep 12: These days one would definitely employ Ninject.Extensions.Factory to manage the factory (i.e., most of the code would above would be auto-genned behind the scenes)
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