What happens to C# Dictionary lookup if the key does not exist?

Question

I tried checking for null but the compiler warns that this condition will never occur. What should I be looking for?

Answer 1

int result= YourDictionaryName.TryGetValue(key, out int value) ? YourDictionaryName[key] : 0;

If the key is present in the dictionary, it returns the value of the key otherwise it returns 0.

Hope, this code helps you.