Property accessor

propertyaccessor.cs

static Func<T, TResult> CreatePropertyAccessor<T, TResult>(string propertyName)
{
    var parameter = Expression.Parameter(typeof(T), "x");
    var property = Expression.Property(parameter, propertyName);
    var lambda = Expression.Lambda<Func<T, TResult>>(property, parameter);
    return lambda.Compile();
}