解析Asp.Net页面执行流程(2)_.Net教程

以下为引用的内容：

internal static string GetApplicationFile()
{
return Path.Combine(HttpRuntime.AppDomainAppPathInternal,

"global.asax");
}

application = (HttpApplication)

HttpRuntime.CreateNonPublicInstance(this._theApplicationType);
using (ApplicationImpersonationContext context2 = new

ApplicationImpersonationContext())
{
application.InitInternal(context, this._state,

this._eventHandlerMethods);
}

private void InitModules()
{
this._moduleCollection =

RuntimeConfig.GetAppConfig().HttpModules.CreateModules();
this.InitModulesCommon();
}它会读取web.config中所有HttpModule的配置
在HookupEventHandlersForApplicationAndModules方法中绑定Module的事件处理

if (HttpRuntime.UseIntegratedPipeline)
{
this._stepManager = new PipelineStepManager(this);
}
else
{
this._stepManager = new ApplicationStepManager(this);
}
this._stepManager.BuildSteps(this._resumeStepsWaitCallback);
在ApplicationStepManager的BuildSteps方法中可以看到事件的绑定执行顺序：

app.CreateEventExecutionSteps(HttpApplication.EventBeginRequest,

steps);
app.CreateEventExecutionSteps(HttpApplication.EventAuthenticateRequest,

steps);


app.CreateEventExecutionSteps(HttpApplication.EventDefaultAuthenticatio

n, steps);


app.CreateEventExecutionSteps(HttpApplication.EventPostAuthenticateRequ

est, steps);
app.CreateEventExecutionSteps(HttpApplication.EventAuthorizeRequest,

steps);


app.CreateEventExecutionSteps(HttpApplication.EventPostAuthorizeRequest

, steps);


app.CreateEventExecutionSteps(HttpApplication.EventResolveRequestCache,

steps);


app.CreateEventExecutionSteps(HttpApplication.EventPostResolveRequestCa

che, steps);
steps.Add(new HttpApplication.MapHandlerExecutionStep(app));


app.CreateEventExecutionSteps(HttpApplication.EventPostMapRequestHandle

r, steps);


app.CreateEventExecutionSteps(HttpApplication.EventAcquireRequestState,

steps);


app.CreateEventExecutionSteps(HttpApplication.EventPostAcquireRequestSt

ate, steps);


app.CreateEventExecutionSteps(HttpApplication.EventPreRequestHandlerExe

cute, steps);
steps.Add(new HttpApplication.CallHandlerExecutionStep(app));


app.CreateEventExecutionSteps(HttpApplication.EventPostRequestHandlerEx

ecute, steps);


app.CreateEventExecutionSteps(HttpApplication.EventReleaseRequestState,

steps);


app.CreateEventExecutionSteps(HttpApplication.EventPostReleaseRequestSt

ate, steps);
steps.Add(new HttpApplication.CallFilterExecutionStep(app));
app.CreateEventExecutionSteps(HttpApplication.EventUpdateRequestCache,

steps);


app.CreateEventExecutionSteps(HttpApplication.EventPostUpdateRequestCac

he, steps);
this._endRequestStepIndex = steps.Count;
app.CreateEventExecutionSteps(HttpApplication.EventEndRequest, steps);
steps.Add(new HttpApplication.NoopExecutionStep());