Outer Join statement in LINQ -

i trying create outer join statement in linq , not having luck. know performing outer join requires 2 steps:

(1) convert join group join into

(2) use defaultifempty() on group generate null value expect if joined result set empty.

i have been using code example:

var query = (from p in dc.gettable<person>() join pa in dc.gettable<personaddress>() on p.id equals pa.personid tempaddresses addresses in tempaddresses.defaultifempty() select new { p.firstname, p.lastname, addresses.state }); 

so tried this:

var outerjoin =      h in resulthours              join u in results on h.key equals u.key outer     dictionary in outer.defaultifempty()     select new {  

the problem intellisense doesn't recognize in select new {} statement. i've tried u. , h., dictionary.

the problem may running i'm trying outer join 2 dictionaries. doesn't seem that, although told need do. doing wrong or not understanding something.

i need join dictionary results.unit dictionary resulthours.hours because output missing unitid fields under conditions. doing outer join supposed clear up.

here code results:

var results =       (from v in vdimunit              join vf in vfactenergyallocation on v.unitkey equals vf.unitkey         join vd in vdimgadsevent on vf.gadseventkey equals vd.gadseventkey         join vt in vdimtime on vf.timekey equals vt.timekey      typecodes.contains(vd.gadseventtypecode)     && vt.yearnum >= (year - 3) && vt.yearnum <= year            group vf new {v.plantid, v.physicalunitid, v.netdependablecapacity, v.netmaximumcapacity,      vt.monthnum} groupitem          select new {groupitem.key.plantid, groupitem.key.physicalunitid, groupitem.key.netmaximumcapacity,     groupitem.key.monthnum, po_hrs = groupitem.sum(     x=> (float)x.allocatedenergymwh / groupitem.key.netdependablecapacity),             uo_hrs = groupitem.sum(x=> (float)x.allocatedenergymwh / groupitem.key.netdependablecapacity),         unit = groupitem.count(), groupitem.key}).todictionary(x=> x.key, x=> x); 

here code resulthours:

var resulthours =       (from vt in vdimtime         join vf in vfactenergyallocation on vt.timekey equals vf.timekey                  join vd in vdimgadsevent on vf.gadseventkey equals vd.gadseventkey         join v in vdimunit on vf.unitkey equals v.unitkey             group vt new {v.plantid, v.physicalunitid, v.netdependablecapacity, v.netmaximumcapacity,          vt.monthnum} groupitem     select new {groupitem.key.plantid, groupitem.key.physicalunitid, groupitem.key.netmaximumcapacity,         hours = groupitem.count(), groupitem.key}).todictionary(x=> x.key.tostring(), x=> x.hours);  

this presently how have output. change after figure out how outer join.

var finalresults =       (from r in results     orderby r.key.monthnum, r.key.plantid, r.key.physicalunitid     select new {site = r.key.plantid, unit = r.key.physicalunitid, r.key.monthnum, numerator = r.value.po_hrs, denominator =          resulthours[r.key.tostring()], weight = r.key.netmaximumcapacity, data_indicator = data_indicator,          budgeted = budgetedplannedoutagehrs, industry_benchmark = industry_benchmark, comments = comments,          executive_comments = executivecomments, fleet_exec_comments = fleetexeccomments}); 

i'm @ loss. linq outer join examples have found apaprently not apply when joining dictionaries.