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TheJediCowboy
TheJediCowboy

Reputation: 9232

Activator.CreateInstance<T>() - Is there a more efficient way of creating objects?

I have a lot of pieces of code which currently use Activator.CreateInstance() to create objects based off the type. Is there a more optimized way of accomplishing this?

Upvotes: 0

Views: 283

Answers (1)

Francis R. Griffiths-Keam
Francis R. Griffiths-Keam

Reputation: 184

I will assume that you are unable to use the new keyword because you are creating an instance of an object via a generic factory.

Your options are limited as to how you can instantiate an object via reflection. Other than Activator.CreateInstance and its derivatives, the only way I know of you can instantiate an object using a generic type definition is by declaring the new constraint. This allows you to call new T(). The object you are instantiating must declare a parameterless constructor for this to work.

If performance is paramount, then I would recommend you avoid any reflectance or generic based patterns of object instantiation and create instances of the objects in question using the new keyword where possible.

Upvotes: 2

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