Compare dictionaries

 Compare two dictionary (dic1, dic2)

1. Loop (Iterating through the key-value pairs)

if (dict1.Count != dict2.Count) return false;

foreach (var kvp in dict1)

{

if (!dict2.TryGetValue(kvp.Key, out var value) || !value.Equals(kvp.Value))

{

return false;

}

}     return true;

2. Compare two dictionaries in C# by invoking the SequenceEqual() method

{

if (dict1.Count != dict2.Count) return false;

return dict1.OrderBy(kvp => kvp.Key).SequenceEqual(dict2.OrderBy(kvp => kvp.Key));

}

 

3. use the Enumerable.All() method to check our dictionaries for equality:

 

if (dict1.Count != dict2.Count) return false;

return dict1.All(kvp => dict2.TryGetValue(kvp.Key, out var value) &&  value.Equals(kvp.Value)); 

Compare all 3 method: 

• Loop is best.   
• then Enumerable.All() method, 
• SequenceEqual() method, which runs is about 11x slower than the Enumerable.All()