C# - Tree / Recursion in Get and Set Accessors? -

i have tree (a list<t>) contains number of itemtype classes (see code below); class has properties overridediscount (which null, indicating use defaultdiscount (which null, indicating use parent itemtype's calculateddiscount))

so see need recurse tree (which incidentally list<itemtype>) parent's calculateddiscount, because null, means need parent's parent's calculateddiscount , on...

is bad idea put code in get accessor?

how handle it?

just sidenote, data comes via sqldatareader database in no particular order, after children property list populated looping through tree , adding children list appropriate. parents unaware of children until after set accessor has been called, ruling out putting useful in set accessor (e.g. setting children's calculateddiscount in set accessor). unless i've missed other way of doing (very possible, recursion fries brain sometimes).

thanks in advance

the class far:

    public class itemtype     {         public int id;         public int? parentid;         public list<itemtype> children;          public double? defaultdiscount;          public double? overridediscount;          public double calculateddiscount         {                         {                 if (overridediscount != null)                 {                     return (double)overridediscount; //+ autospec qty                 }                 else                 {                     if (defaultdiscount != null)                     {                         return (double)defaultdiscount;                     }                     else                     {                          //i need itemtype's parent's discount                          //here recursing tree...is bad idea?                     }                 }             }         }     } 

instead of storing id of parent item, store complete object. make lot easier (i convert public variables properties):

public class itemtype {     public int id { get; set; }     public itemtype parent { get; set; }     public list<itemtype> children; { get; set; }      public double? defaultdiscount { get; set; }     public double? overridendiscount { get; set; }      public double calculateddiscount     {                 {             return (double)(overridendiscount ??                              defaultdiscount ??                              (parent != null ? parent.calculateddiscount : 0));         }     } }