Check if property has attribute

Question

Given a property in a class, with attributes - what is the fastest way to determine if it contains a given attribute? For example:

    [IsNotNullable]
    [I         


        

Answer 1

This can now be done without expression trees and extension methods in a type safe manner with the new C# feature nameof() like this:

Attribute.IsDefined(typeof(YourClass).GetProperty(nameof(YourClass.Id)), typeof(IsIdentity));

nameof() was introduced in C# 6