带有autofac的asp.net - webform上的所有控件都为null

时间:2012-10-22 17:10:35

标签: asp.net null controls httphandler autofac

我正在使用asp.net的autofac。在Global.asax中,我注册了我的所有网页:

AssertNotBuilt();
// Register Web Pages
m_builder.RegisterAssemblyTypes(typeof(AboutPage).Assembly)
  .Where(t => t.GetInterfaces().Contains(typeof(IHttpHandler)))
  .AsSelf().InstancePerLifetimeScope();

m_container = m_builder.Build();
m_wasBuilt = true;

然后我使用自定义httpHandler来获取当前网页:

    public class ContextInitializerHttpHandler : IHttpHandler, IRequiresSessionState
    {
        public void ProcessRequest(HttpContext context)
        {
            //Get the name of the page requested
            string aspxPage = context.Request.Url.AbsolutePath;

            if (aspxPage.Contains(".aspx"))
            {
                // Get compiled type by path
                Type webPageBaseType = BuildManager.GetCompiledType(aspxPage).BaseType;

                // Resolve the current page
                Page page = (Page)scope.Resolve(webPageBaseType);

                //process request
                page.ProcessRequest(context);

            }
        }
        public bool IsReusable
        {
        get { return true; } 
        }
  }

一切正常,但是当它进入web page_load时,我看到页面上存在的所有asp控件都为null。为什么它们为空,我如何初始化它们?

1 个答案:

答案 0 :(得分:0)

我明白了。我注册的页面没有编译成我可以从我的http处理程序中的上下文中获取的页面:

string aspxPage = context.Request.Url.AbsolutePath;
Type webPageBaseType = BuildManager.GetCompiledType(aspxPage);

这些是我需要保存所有控件的页面。问题是,我无法在我的http处理程序中注册它们,因为它们是动态的并且以somewebpage_aspx的形式查看,程序集是App_Web_somewebpage.aspx.cdcab7d2.r3x-vs2n,Version = 0.0.0.0,Culture = neutral,PublicKeyToken = NULL。

所以解决方案(或黑客..)不是注册网页,而是从范围解析页面控件:

ILifetimeScope scope = IocInitializer.Instance.InitializeCallLifetimeScope();
Type webPageType = BuildManager.GetCompiledType(aspxPage);
Page page = (Page)Activator.CreateInstance(webPageType);

foreach (var webPageProperty in webPageType.GetProperties(BindingFlags.SetProperty | BindingFlags.Instance | BindingFlags.Public))
{
    if (scope.IsRegistered(webPageProperty.PropertyType))
    {
        var service = scope.Resolve(webPageProperty.PropertyType);
        webPageProperty.SetValue(page, service, null);
    }
}
相关问题