Multi-collection combination implementation in C #

C # Multi-collection combined use method, mainly used in the Enumerable.join method

varSkuinfolist =Newdictionary<int, list<Long>>(); varCtparamlist =Newlist<Long>(); foreach(varSkuinchskulist) {                    varSinglesku = SKU. Split ('|'); Ctparamlist=Newlist<Long>(); foreach(varSkuparaminchskuparamlist) {                        varSingleskuparam = Skuparam.split (':'); if(singlesku[0] = = singleskuparam[0])                        {                            varSingleparam = singleskuparam[1]. Split ('|'); Ctparamlist.add (Convert.toint64 (singleparam[0])); }} skuinfolist.add (Convert.ToInt32 (singlesku[0]), ctparamlist); }                varres =Newlist<list<Long>> () {Newlist<Long>() }; Func<List<Long, list<list<Long>>> func = LST = =                {                    returnRes. Join (LST, x =1, x =1, (x, y) = =                    {                        varTEM =x.tolist (); Tem.                        Add (y); returntem; }).                ToList ();                }; foreach(varSkuinfoinchskuinfolist) Res. AddRange (func (Skuinfo.value));

Key code:

varres =Newlist<list<Long>> () {Newlist<Long>() }; Func<List<Long, list<list<Long>>> func = LST = =                {                    returnRes. Join (LST, x =1, x =1, (x, y) = =                    {                        varTEM =x.tolist (); Tem.                        Add (y); returntem; }).                ToList (); };

Multi-collection combination implementation in C #