I have an ASPX page that needs to process information for a module and need to check the user's permissions for that module (essentially need an "IsEditable" property).  Now, it seems I could try to load the ModuleInfo from the ModuleController and then iterate through the modulepermissions collection, but I'm not really sure what to look for.  Anybody shed some light on how to find out if the currently logged in user has Edit rights for the module?  I'd imagine I'll need both the moduleid AND the tabid to get at this information, right?

Well... technically it is the same module but it is an "external" ASPX page (not an ASCX deriving from ModuleBase or anything like that -- I open the ASPX page using Telerik RadWindow as a "detail" page for a calendar event).  Here is what I've done and seems to work (experimenting after posting the original question):

return DotNetNuke.Security.Permissions.ModulePermissionController.HasModulePermission(evt.ModuleId, _tabId, "EDIT");

I access the page and pass in a parameter for an "EventId" (which I load the data object for and pass that in, the data object has a moduleid reference, as seen above).  I also pass the tabid for the page that contains the module so I can get that, then use the "EDIT" key.  I'll have to look at the method you suggested, seems like it would get me the same results.

Thanks a bunch though!

**EDIT** I looked at that other method (DotNetNuke.Security.PortalSecurity.HasEditPermissions(evt.ModuleId, _tabId);) and it shows as being deprecated and wants me to use a much more convoluted method instead.  I think I'll stick with the method I'm using unless a core member tells me I'm naughty by doing so.