问题描述
我想与温莎线了依赖注入标准asp.net web表单。我想，我已经实现了这个使用的HttpModule和CustomAttribute（如下所示code）中，该解决方案似乎有点笨重，想知道是否有更好的解决方案，支持与走出温莎盒子？
的有如下所示在一起的几个文件中的所有
// index.aspx.cs
公共部分类IndexPage：System.Web.UI.Page
{
保护无效的Page_Load（对象发件人，EventArgs的发送）
{
Logger.Write（页面加载）;
} [注入]
公共ILogger记录仪{搞定;组; }
} // WindsorHttpModule.cs
公共类WindsorHttpModule：IHttpModule的
{
私人HttpApplication的_Application;
私人IoCProvider _iocProvider; 公共无效初始化（HttpApplication的情况下）
{
_Application =背景;
_iocProvider =上下文IoCProvider; 如果（_iocProvider == NULL）
{
抛出新的InvalidOperationException异常（应用程序必须实现IoCProvider）;
} _Application preRequestHandlerExecute + = InitiateWindsor。
} 私人无效InitiateWindsor（对象发件人，发送System.EventArgs）
{
当前是页= _application.Context.CurrentHandler的页面;
如果（当前是！= NULL）
{
InjectPropertiesOn（当前页）;
currentPage.InitComplete + = {委托InjectUserControls（当前页）; };
}
} 私人无效InjectUserControls（控制父）
{
如果（parent.Controls！= NULL）
{
的foreach（在parent.Controls控制控制）
{
如果（控制用户控件）
{
InjectPropertiesOn（对照组）;
}
InjectUserControls（对照组）;
}
}
} 私人无效InjectPropertiesOn（当前为对象）
{
的PropertyInfo []属性= currentPage.GetType（）的GetProperties（）。
的foreach（在性能的PropertyInfo财产）
{
[对象]属性= property.GetCustomAttributes（typeof运算（InjectAttribute），FALSE）;
如果（属性=空＆放大器;！＆放大器; attributes.Length大于0）
{
反对valueToInject = _iocProvider.Container.Resolve（property.PropertyType）;
property.SetValue（当前是，valueToInject，NULL）;
}
}
}
} //的Global.asax.cs
公共类全球：System.Web.HttpApplication，IoCProvider
{
私人IWindsorContainer _container; 公共覆盖无效的init（）
{
base.Init（）; InitializeIoC（）;
} 私人无效InitializeIoC（）
{
_container =新WindsorContainer（）;
_container.AddComponent＆LT; ILogger，记录仪＆GT;（）;
} 公共IWindsorContainer集装箱
{
{返回_container; }
}
} 公共接口IoCProvider
{
IWindsorContainer集装箱{搞定; }
}
我想你基本上是正确的轨道上 - 如果你还没有，我建议采取一看犀牛冰屋，一的WebForms MVC框架，Here's这个和源一个好的博客文章是。
I am trying to wire up dependency injection with Windsor to standard asp.net web forms. I think I have achieved this using a HttpModule and a CustomAttribute (code shown below), although the solution seems a little clunky and was wondering if there is a better supported solution out of the box with Windsor?
There are several files all shown together here
// index.aspx.cs
public partial class IndexPage : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
Logger.Write("page loading");
}
[Inject]
public ILogger Logger { get; set; }
}
// WindsorHttpModule.cs
public class WindsorHttpModule : IHttpModule
{
private HttpApplication _application;
private IoCProvider _iocProvider;
public void Init(HttpApplication context)
{
_application = context;
_iocProvider = context as IoCProvider;
if(_iocProvider == null)
{
throw new InvalidOperationException("Application must implement IoCProvider");
}
_application.PreRequestHandlerExecute += InitiateWindsor;
}
private void InitiateWindsor(object sender, System.EventArgs e)
{
Page currentPage = _application.Context.CurrentHandler as Page;
if(currentPage != null)
{
InjectPropertiesOn(currentPage);
currentPage.InitComplete += delegate { InjectUserControls(currentPage); };
}
}
private void InjectUserControls(Control parent)
{
if(parent.Controls != null)
{
foreach (Control control in parent.Controls)
{
if(control is UserControl)
{
InjectPropertiesOn(control);
}
InjectUserControls(control);
}
}
}
private void InjectPropertiesOn(object currentPage)
{
PropertyInfo[] properties = currentPage.GetType().GetProperties();
foreach(PropertyInfo property in properties)
{
object[] attributes = property.GetCustomAttributes(typeof (InjectAttribute), false);
if(attributes != null && attributes.Length > 0)
{
object valueToInject = _iocProvider.Container.Resolve(property.PropertyType);
property.SetValue(currentPage, valueToInject, null);
}
}
}
}
// Global.asax.cs
public class Global : System.Web.HttpApplication, IoCProvider
{
private IWindsorContainer _container;
public override void Init()
{
base.Init();
InitializeIoC();
}
private void InitializeIoC()
{
_container = new WindsorContainer();
_container.AddComponent<ILogger, Logger>();
}
public IWindsorContainer Container
{
get { return _container; }
}
}
public interface IoCProvider
{
IWindsorContainer Container { get; }
}
I think you're basically on the right track - If you have not already I would suggest taking a look at Rhino Igloo, an WebForms MVC framework, Here's a good blog post on this and the source is here - Ayende (the Author of Rhino Igloo) tackles the issue of using Windsor with webforms quite well in this project/library.
I would cache the reflection info if you're going to inject the entire nested set of controls, that could end up being a bit of a performance hog I suspect.
Last of all spring.net approaches this in a more configuration-oriented way, but it might be worth taking a look at their implementation - here's a good reference blog post on this.
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