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Question 27/163
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?
You need to test whether the customers' variable is a generic list of Customer objects.
Which line of code should you use?
Correct Answer: D
Explanation/Reference:
Explanation:
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
Explanation:
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
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Recent Comments (The most recent comments are at the top.)
Answer: A
https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/is