使用匿名类型在另一个列表中使用一个列表值

Question

我有一个带有匿名类型的列表x，其中我想使用预先计算的值

int count1 = 
    (from users in dc.BeadSets 
     where users.UserId == i 
     select users
    ).Count();

 var x = 
    (from users in dc.Users 
     where users.Id == i 
     select  new { username = users.UserName
                 , fullname = users.FirstName + " " + users.LastName
                 , userid = users.Id 
                 }
    ).ToList();

现在这样可以正常工作

Cannot implicitly convert type 'System.Collections.Generic.List<AnonymousType#1>'
    to 'System.Collections.Generic.List<AnonymousType#2>'   

但是当我试图像这样使用时抛出错误

int count1 = 
    (from users in dc.BeadSets 
     where users.UserId == i 
     select users
    ).Count();

x = 
    (from users in dc.Users 
     where users.Id == i 
     select  new { beadsets= count1
                 , username = users.UserName
                 , fullname = users.FirstName + " " + users.LastName
                 , userid = users.Id }
    ).ToList();