What is reflection in .net

This article will explain in detail what is reflection in .net. The editor thinks it is very practical, so I share it for you as a reference. I hope you can get something after reading this article.

Reflection is a very useful feature in. Net.

What is reflex?

It can be summed up in one sentence: the ability to dynamically create instances of a certain type, call methods, and access object members based on assembly and metadata.

Why use reflection?

When you can't determine which object to call at compile time, you have to use reflection.

Application scenarios of reflection

The most common application scenarios are:

1. Database switching based on factory mode.

2the ORM framework, because it is faced with a general model, all properties or methods are dynamically generated.

3, the plug-in-based system cannot be determined at compile time without knowing what the external plug-in is, so it will use reflection to load.

Assembly

Because reflection is based on assemblies and metadata, it is necessary to explain what an assembly is and when metadata.

Assemblies: assemblies are collections of all types that are compiled to generate PE files (such as executable .exe and class library files .dll).

Metadata: metadata is part of an assembly and mainly contains information such as name, version, language and culture, and public key tokens.

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