How Can I Verify if an Object is a Generic Type in C#?

Verifying Generic Type in C#

In C#, developers often encounter the need to determine whether an object belongs to a generic type. While attempting this, some individuals may stumble upon challenges, as illustrated by the unsuccessful approach mentioned in the question. This article aims to address this issue by providing correct methods for performing this test.

Checking for Generic Type:

To verify if an object is of any generic type, regardless of its specific type parameters, utilize the following code:

return list.GetType().IsGenericType;

Identifying Generic List:

If specifically checking for a generic List, employ the below method:

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

It's crucial to note that the second method checks for exact type equivalence. Failing this test does not necessarily imply that the object is not a List; it may still be a derived type that can assign objects to a List variable.

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