Reading Properties of an Object with Expression Trees

Question

I want to create a Lambda Expression for every Property of an Object that reads the value dynamically.

What I have so far:

var properties = typeof (T         


        

Answer 1

After hours of googling found the answer here. I've added the snippets from the blog post as it might help others having the same troubles:

public static class PropertyInfoExtensions
{
    public static Func GetValueGetter(this PropertyInfo propertyInfo)
    {
        if (typeof(T) != propertyInfo.DeclaringType)
        {
            throw new ArgumentException();
        }

        var instance = Expression.Parameter(propertyInfo.DeclaringType, "i");
        var property = Expression.Property(instance, propertyInfo);
        var convert = Expression.TypeAs(property, typeof(object));
        return (Func)Expression.Lambda(convert, instance).Compile();
    }

    public static Action GetValueSetter(this PropertyInfo propertyInfo)
    {
        if (typeof(T) != propertyInfo.DeclaringType)
        {
            throw new ArgumentException();
        }

        var instance = Expression.Parameter(propertyInfo.DeclaringType, "i");
        var argument = Expression.Parameter(typeof(object), "a");
        var setterCall = Expression.Call(
            instance,
            propertyInfo.GetSetMethod(),
            Expression.Convert(argument, propertyInfo.PropertyType));
        return (Action)Expression.Lambda(setterCall, instance, argument).Compile();
    }
}