Setting HttpHandler dynamically

1. set PostAuthorizeRequest.cs

var application      = HttpContextFactory.Context.ApplicationInstance;
var eventHandlerList = (EventHandlerList)application.prop("Events");
var fieldInfo = (System.Reflection.FieldInfo)application.type().BaseType.BaseType.field("_initInternalCompleted");
PublicDI.reflection.setField(fieldInfo, application, false);         //need to set this or we get an 'Event handlers can only be bound to HttpApplication events during IHttpModule initialization.' on the  	application.PostAuthorizeRequest below
//return PublicDI.reflection.getFieldValue(fieldInfo, application);  //usually true

try
{
	application.PostAuthorizeRequest += (object sender, EventArgs e) => { "in PostAuthorizeRequest".info(); };
}
catch(Exception ex)
{
	return ex.Message;
}
return application;

2. set Begin Request callback.cs

//The PostAuthorizeRequest didn't get a callback (shown above, but the BeginRequest below did)
//it might be that we need to do something else when there isn't at least one Event Mapped by default

var application      = HttpContextFactory.Context.ApplicationInstance;
var eventHandlerList = (EventHandlerList)application.prop("Events");
var fieldInfo = (System.Reflection.FieldInfo)application.type().BaseType.BaseType.field("_initInternalCompleted");
PublicDI.reflection.setField(fieldInfo, application, false);         //need to set this or we get an 'Event handlers can only be bound to HttpApplication events during IHttpModule initialization.' on the  	application.PostAuthorizeRequest below
//return PublicDI.reflection.getFieldValue(fieldInfo, application);  //usually true

try
{
	application.BeginRequest += (object sender, EventArgs e) => 
        	{ 
			if(HttpContextFactory.Request.Url.str().contains(".js",".ashx",".asmx","jpg",".gif").isFalse())
	                {
                        	HttpContextFactory.Response.Write("<b>[BeginRequest]</b>");
                        }
                };
}
catch(Exception ex)
{
	return ex.Message;
}
return application;

3. seeing the Username values at difference stages of the Http pipeline.cs

var application      = HttpContextFactory.Context.ApplicationInstance;
var eventHandlerList = (EventHandlerList)application.prop("Events");
var fieldInfo = (System.Reflection.FieldInfo)application.type().BaseType.BaseType.field("_initInternalCompleted");
PublicDI.reflection.setField(fieldInfo, application, false);         //need to set this or we get an 'Event handlers can only be bound to HttpApplication events during IHttpModule initialization.' on the  	application.PostAuthorizeRequest below

//return PublicDI.reflection.getFieldValue(fieldInfo, application);  //usually true

Action<String> showCurrentUser = 
	(callbackName)=>{
        			if(HttpContextFactory.Request.Url.str().contains(".js",".ashx",".asmx","jpg",".gif").isFalse())
               			{
                                	var message  = "in {0} the current windows user is {1}"
                                        			.format(callbackName,WindowsIdentity.GetCurrent().Name);
                                        HttpContextFactory.Response.Write("<b>[{0}]</b><br/>".format(message));                        
			        }
                        };

application.AuthenticateRequest     += (object sender, EventArgs e) => {  showCurrentUser("AuthenticateRequest"	    ); };
application.BeginRequest 	    += (object sender, EventArgs e) => {  showCurrentUser("BeginRequest"            ); };
application.PostAuthenticateRequest += (object sender, EventArgs e) => {  showCurrentUser("PostAuthenticateRequest" ); };
application.AcquireRequestState     += (object sender, EventArgs e) => {  showCurrentUser("AcquireRequestState"     ); };

//AcquireRequestState is the one we need, since by then the Windows Username has been resolved
return "mappings added";

4. detecting if the dynamic event is mapped.cs

var application       = HttpContextFactory.Context.ApplicationInstance;
var eventHandlerList  = (EventHandlerList)application.prop("Events");
var eventObject       = typeof(HttpApplication).fieldValue("AcquireRequestState");
var listEntry         = eventHandlerList.invoke("Find",eventObject);
var handler 	      = listEntry.field("handler");
var invocationList    = (Delegate[])handler.invoke("GetInvocationList");
var invocationTargets = (from item in invocationList select item.Target).toList();

return invocationTargets.asString().contains("DynamicType+");

return application;
return TM_Xml_Database.Current.Path_XmlDatabase;
//using TeamMentor.CoreLib;
//O2Ref:TeamMentor.CoreLib.dll

//using System;
//using System.Web;
//using System.ComponentModel;
//using TeamMentor.CoreLib;
//using O2.DotNetWrappers.ExtensionMethods;