Compare List<Dictionary>

Hello Team,

I have different list objects with data & need to extract data from those 2 lists.

List obj1; Before changes

List obj2; After changes

1. need to retrieve all keys from this list?

2. How can i compare & extract difference from these 2lists.

scenario is below & need to findout all the operations

obj1 : 1 AAA - Deleted

2 BBB - Data modified to CCC for this key

obj2 2 CCC

3 DDD - New record added

Like This ?

enum ChangeType { Added, UnChanged, Changed, Removed };
public Dictionary<string, ChangeType>() CompareDictionary(Dictionary<string, object> dicA, Dictionary<string, object> dicB)
{
return dicA.Keys.Aggregate(
new Dictionary<string, ChangeType>(),
(seed, key) =>
{
if (dicB.ContainsKey(key))
{
seed.Add(key, dicA[key].Equals(dicB[key]) ? ChangeType.UnChanged : ChangeType.Changed);
}
else
{
seed.Add(key, ChangeType.Removed);
}
return seed;
})
.Concat(
dicB.Keys.Where(key => !dicA.ContainsKey(key)).Select(key => new KeyValuePair<string, ChangeType>(key, ChangeType.Added)
);
}

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