FastReflections

FastReflections is a lightweight and high-performance utility library for .NET that provides fast, cached reflection-based access to methods, properties, using expressions, and types with clean and expressive syntax.

Installation

dotnet add package FastReflections

Usage

Invoke Method

var instance = new MyClass();
var method = typeof(MyClass).GetMethod("SayHello");

var result = FastReflections.Invoke<MyClass, string>(method, instance, "John");
// result => "Hello, John"

Get Property

var instance = new MyClass { Name = "FastReflections" };

var value = FastReflections.GetPropertyValue(instance, x => x.Name);
// value => "FastReflections"

Set Property

var instance = new MyClass();

FastReflections.SetPropertyValue(instance, x => x.Name, "Updated");
// instance.Name => "Updated"

Find Type by Name

var type = FastReflections.GetTypeByName("MyNamespace.MyClass");
// type => typeof(MyClass)

When to Use

Use FastReflections when:

You need dynamic access to methods and properties
You want performance without writing boilerplate reflection code
You’re building frameworks, tools, or extensible plugins

Internals

Uses Expression Trees for performance
Thread-safe ConcurrentDictionary for caching
Automatic type cache loading via AssemblyLoad event

LauanGuermandi/FastReflections