how to compair a dictionary memeber of a class with an other RSS

• • Reply
  rajemessage

  Member

  16 Points

  172 Posts

  how to compair a dictionary memeber of a class with an other

  Mar 09, 2020 09:07 AM|rajemessage|LINK

  public class RootObject1  
      {  
  
          public Dictionary<string, string> nodeHierarchy { get; set; }  
          public Dictionary<string, string> Parentnode { get; set; }  
  
  
  
  
  }  

  List<RootObject1> ro = new List<RootObject1>();
              RootObject1 ro1 = new RootObject1
              {
                  nodeHierarchy = new Dictionary<string, string>
              {
                  { "l1", "x" },{"l2", "x" }
              }
              };
  
              ro.Add(ro1);
  
              Dictionary<string, string> di = new Dictionary<string, string>();
              di.Add("l1", "x");
              di.Add("l2", "x");
  
              var x = ro.Where(w => w.nodeHierarchy == di);

  
   // follwing is not compairing pls suggest

                            yours scincerly

• • Reply
  PaulTheSmith

  Participant

  1620 Points

  927 Posts

  Re: how to compair a dictionary memeber of a class with an other

  Mar 09, 2020 10:42 AM|PaulTheSmith|LINK

  Both dl and .nodeHierarchy are objects of type Dictionary.  They will be compared by reference.

  I'm guessing that you want to compare the elements of each Dictionary.

  Don't have time to test the code but you will need to check that each element of w.nodeHierarchy exists in di and also that there are no element of di that do not exist in w.nodeHierarchy.  Something like

  ro.Where(w => w.nodeHierarchy.All(nh => di.KeyExists(nh.Key) && di[nh.Key] == nh.Value)) && !di.Any(ele => !nh.KeyExists(ele.Key))

  (Can't run the code to check.  I think the test is '.KeyExists' but could be wrong)

• • Reply
  Yang Shen

  Contributor

  3140 Points

  983 Posts

  Re: how to compair a dictionary memeber of a class with an other

  Mar 10, 2020 02:49 AM|Yang Shen|LINK

  Hi rajemessage,

  I think the method @PaulTheSmith was talking about should be the Dictionary<TKey,TValue>.ContainsKey(TKey) Method. Use the ContainsKey() to check if a key exists in a dictionary.

  And the code could be uppdated to:

  var x = ro.Where(w => w.nodeHierarchy.All(nh => di.ContainsKey(nh.Key) && di[nh.Key] == nh.Value));

  Best Regard,

  Yang Shen

• • Reply
  PaulTheSmith

  Participant

  1620 Points

  927 Posts

  Re: how to compair a dictionary memeber of a class with an other

  Mar 10, 2020 06:32 AM|PaulTheSmith|LINK

  Thanks Yang Shen!