如何将IQueryable表达式树转换为Lambda

Question

How can i convert a IQueryable Expression Tree to a Expression<Func<T,bool>> Expression.

IQueryable<Book> Books;

var query = Books.Where(p => p.Author.AuthorId == 5);

Expression<Func<Book, bool>> expression = ?????

Answer 1

您可以使用IQueryable.Expression属性来访问IQueryable的Expression树。

Answer 2

Expression<Func<Book, bool>> expression = p => p.Author.AuthorId == 5;