Home » Microsoft » 70-483 v.2 » Which line of code should you use?
You have a class named Customer and a variable named customers.
You need to test whether the customers’ variable is a generic list of Customer objects.
Which line of code should you use?
A. Option A
B. Option B
C. Option C
D. Option D
Correct Answer: D
Explanation/Reference:
If you want to check if it’s an instance of a generic type:
return list.GetType().IsGenericType;
If you want to check if it’s a generic List<T>:
return list.GetType().GetGenericTypeDefinition() == typeof(List<>);
Reference: Testing if object is of generic type in C#
http://stackoverflow.com/questions/982487/testing-if-object-is-of-generic-type-in-c-sharp
Correct “A”
Agree A is the correct answer here. If it was D it should have been written if (customers.GetType() == typeof(List<Customer))
Even the explanation says this.
Agree with A
Its A