How Can I Verify if an Object is a Specific Generic Type (e.g., List) in C#?

Verifying Generic Type in C#

You aim to determine if an object belongs to a generic type. Your initial attempt to compare GetType() with typeof(List<>) fails to produce the desired result. Let's explore the correct approach.

To ascertain if an object is an instance of any generic type, utilize the IsGenericType property:

return list.GetType().IsGenericType;

On the other hand, if you seek to verify if it's specifically a List generic type, employ this condition:

return list.GetType().GetGenericTypeDefinition() == typeof(List<>);

Note that this method verifies exact type equivalence. As mentioned by Jon, a negative response doesn't conclusively imply that the object cannot be assigned to a List variable.

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