![]() I will use simple POCO class named person with a single property called Name. I the following example you will see how you should not use the reflection and what is the impact of not caching reflection results. Pretty much always result of the reflection is type related ( or instance). You already know reflection is slow, so try not to repeat it in your code. Simplest but the most powerful thing you can do is caching the reflection results. Here are some of them which will definitely help you reduce the reflection downsides related to the speed. This is because they are generic type mappers and are supposed to work for any type and object instances, so they need reflection to discover source and target objects types.Įven though reflection is heavy and expensive operation, there are techniques to lower down the impact and increase the speed of reflection usage in your code. Pretty much all mapping libraries you can find for. This is common for the mapping objects and transforming them from one type to another. You may not know the type or instance do not have the same base class or they just do not implement the same interface. It is easier to say than do it, sometimes you need to access objects dynamically. The best advice for the reflection usage is do not use it! There are other ways to access properties and methods of the objects such as interfaces and abstract classes. If you have fewer objects accessed with reflection you probably won't notice the execution speed of your code, but if you have higher load, especially if you have large collections and you are executing reflection in a loop, your application performances will be significantly lowered and you will notice the execution speed increases. ![]() ![]() Using reflection can significantly lower down your performances. ![]() Unfortunately, this ability comes at great cost. Without reflection you could only access properties with appropriate access level but with reflection, you have no problem accessing even private elements of the class. Using reflection, you can dynamically instantiate objects, access fields, methods and properties regardless of the protection level. Reflection allows accessing type structure and its meta-data in runtime. ![]()
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