Reflection - get attribute name and value on property

Question

I have a class, lets call it Book with a property called Name. With that property, I have an attribute associated with it.

public class Book
{
    [Author(\"         


        

Answer 1

I have solved similar problems by writing a Generic Extension Property Attribute Helper:

using System;
using System.Linq;
using System.Linq.Expressions;
using System.Reflection;

public static class AttributeHelper
{
    public static TValue GetPropertyAttributeValue(
        Expression> propertyExpression, 
        Func valueSelector) 
        where TAttribute : Attribute
    {
        var expression = (MemberExpression) propertyExpression.Body;
        var propertyInfo = (PropertyInfo) expression.Member;
        var attr = propertyInfo.GetCustomAttributes(typeof(TAttribute), true).FirstOrDefault() as TAttribute;
        return attr != null ? valueSelector(attr) : default(TValue);
    }
}

Usage:

var author = AttributeHelper.GetPropertyAttributeValue(prop => prop.Name, attr => attr.Author);
// author = "AuthorName"