Hi,everyone:
I'm trying to develop a DNN module,But I encountered a serious problem,I 'm not sure whether it is a DNN feature or it is a configration error,I wish you can help me.

My module contains servial user controls,so when I use the "NavigateURL" method provided by DNN Core to navigate to a user control,It will automatically redirect to a new url which contain a "ctl" parameter,But once this parameter is passed,the other modules in the page will be lost,Only the user control in my module indicated by the "ctl" parameter will by visiable,it is quite a ugly UI.

On Smcculloch's this great site,it seems that this problem doesn't exist,I don't why,Could you help me? Many thanks!

In my another project,I always used this solution.It doesn't work very well,So I want to know whether there is a better solution.
 
I created a base control,which hold every other controls,My base control will dynamicly decide which control to show and which to hide based on querystring.My base control is derived from PortalModuleBase,and other controls are derived from PortalModuleBase too,But I found that,Only my base control can get TabId and ModuleID,other controls can't get it properly.So  I modified these controls to be derived from WebControls,and pass these two parameters from my base control.

Is it a popular question?Could you tell me how do you solve this problem?Thank you.