如何拆分在C＃中创建匿名类型的表达式

Question

I have a expression in C#

abc => new { abc.x, abc.y }

i want to break it down to

abc => abc.x
abc => abc.y
...

so i can loop through each argument. Anyone shed some light on this?

Answer 1

Anonymous declarations are just an abstraction for an anonymous type generated at compile time .

You won't be able to generate them on the fly like you describe.

Answer 2

I have no idea why do you want to do this, but mellamokb comment shows the direction. The whole method could look something like this:

IEnumerable<Expression> GetExpressions<TParam, TResult>(
    Expression<Func<TParam, TResult>> expression)
{
    return ((NewExpression)expression.Body).Arguments
        .Select(a => Expression.Lambda(a, expression.Parameters.Single()));
}