mvc sitemap provider: menu disappears - mvcsitemapprovider

Question

I am using mvcsitemap to create a menu, submenu and breadcrump for a webapp I'm developing. I am using preserveroutevalues in the xml config in order to move around my (many) parameters when rendering links. When a user starts playing around with query parameters, the menu/submenu/breadcrumb disappear after some page loads. This is not consistent and I cannot reproduce it all the time, but it happens way too ofter.
My routes
routes.MapRoute(
name: "ForwardCurveDefault",
url: "forward-curve/{commoditycode}/{selectedyear}-{selectedmonth}-{selectedday}",
defaults: new {
controller = "ForwardCurve", action = "index",
selectedyear = default(DateTime).Year,
selectedmonth = default(DateTime).Month,
selectedday = default(DateTime).Day,
commoditycode = "none"
}
);
routes.MapRoute(
name: "Consumption",
url: "consumption/{commoditycode}/{managedcompanyid}/{entityid}/{startyear}-{startmonth}-{startday}/{endyear}-{endmonth}-{endday}",
defaults: new {
controller = "Consumption", action = "Index",
// begining of current month.
startyear = default(DateTime).Year,
startmonth = default(DateTime).Month,
startday = default(DateTime).Day,
// end of current month.
endyear = default(DateTime).Year,
endmonth = default(DateTime).Month,
endday = default(DateTime).Day,
commoditycode = "none",
managedcompanyid = 0,
entityid = 0,
}
);
routes.MapRoute(
name: "Budget",
url: "budget/{commoditycode}/{managedcompanyid}/{entityid}/{startyear}-{startmonth}-{startday}/{endyear}-{endmonth}-{endday}",
defaults: new {
controller = "Budget", action = "Index",
// begining of current month.
startyear = default(DateTime).Year,
startmonth = default(DateTime).Month,
startday = default(DateTime).Day,
// end of current month.
endyear = default(DateTime).Year,
endmonth = default(DateTime).Month,
endday = default(DateTime).Day,
commoditycode = "none",
managedcompanyid = 0,
entityid = 0,
}
);
My sitemap
<mvcSiteMapNode title="Data Management" controller="ForwardCurve" action="Index" key="DataManagement" preservedRouteParameters="commoditycode,selectedyear,selectedmonth,selectedday">
<mvcSiteMapNode title="Forward curves" controller="ForwardCurve" action="Index" key="forwardcurve" preservedRouteParameters="commoditycode,selectedyear,selectedmonth,selectedday"/>
<mvcSiteMapNode title="Consumption" controller="Consumption" action="Index" key="consumption" preservedRouteParameters="commoditycode,managedcompanyid,entityid,startyear,startmonth,startday,endyear,endmonth,endday"/>
<mvcSiteMapNode title="Budget" controller="Budget" action="Index" key="budget" preservedRouteParameters="commoditycode,managedcompanyid,entityid,startyear,startmonth,startday,endyear,endmonth,endday"/>
</mvcSiteMapNode>
I get a nice menu. After going back and forth to different query values, I end up in a page with a valid URL and no menu. I can see that my currentNode is null.

Answer 1

Have you checked this out yet with version 4.0? There have been some significant improvements in the node matching logic.