ASP.NET MVC 从IHttp到页面输出的实例代码

protected virtual void ProcessRequest(HttpContext httpContext)
{
    HttpContextBase base2 = new HttpContextWrapper(httpContext);
    this.ProcessRequest(base2);
}

protected internal virtual void ProcessRequest(HttpContextBase httpContext)
{
    IController controller;
    IControllerFactory factory;
    this.ProcessRequestInit(httpContext, out controller, out factory);
    try
    {
        controller.Execute(this.RequestContext);
    }
    finally
    {
        factory.ReleaseController(controller);
    }
}       
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protected virtual void Execute(RequestContext requestContext)   //------>ControllerBase
{
    if (requestContext == null)
    {
        throw new ArgumentNullException("requestContext");
    }
    if (requestContext.HttpContext == null)
    {
        throw new ArgumentException(MvcResources.ControllerBase_CannotExecuteWithNullHttpContext, "requestContext");
    }
    this.VerifyExecuteCalledOnce();
    this.Initialize(requestContext);
    using (ScopeStorage.CreateTransientScope())
    {
        this.ExecuteCore();
    }
}

protected override void ExecuteCore()   //------>Controller
{
    this.PossiblyLoadTempData();
    try
    {
        string requiredString = this.RouteData.GetRequiredString("action");
        if (!this.ActionInvoker.InvokeAction(base.ControllerContext, requiredString))   //public IActionInvoker ActionInvoker { get; set; }
        {
            this.HandleUnknownAction(requiredString);
        }
    }
    finally
    {
        this.PossiblySaveTempData();
    }
}
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protected virtual void InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult)
{
    actionResult.ExecuteResult(controllerContext);
}
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