How to compare two Dictionaries in C#

Question

I have two Generic Dictionaries.Both have same keys.But values can be different.I want to compare 2nd dictionary with 1st dictionary .If there are differences between values

Answer 1

var diff1 = d1.Except(d2);
var diff2 = d2.Except(d1);
return diff1.Concat(diff2);

Edit: If you sure all keys are same you can do:

var diff = d2.Where(x=>x.Value != d1[x.Key]).ToDictionary(x=>x.Key, x=>x.Value);