Pobranie nazwy właściwości z obiektu

        public static string GetName<T>(Expression<Func<T, object>> expression) 
            ExpressionType type = expression.Body.NodeType;

            if (type == ExpressionType.MemberAccess)
                return ((MemberExpression)expression.Body).Member.Name;

            if (type == ExpressionType.Convert)
                return ((MemberExpression)((UnaryExpression)expression.Body).Operand).Member.Name;

            if (type == ExpressionType.Call)
                return ((MethodCallExpression)expression.Body).Method.Name;

            throw new ArgumentException("Unknown expression type: " + type);

… i użycie

var propertyName = NameHelper.GetName<Customer>(s => s.CustomerId);

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