无法隐式转换类型'System.Collections.Generic.List< AnonymousType#1>'到"System.Collections.Generic.List< FirstApp.Model.TeamDetails>" [英] Cannot implicitly convert type 'System.Collections.Generic.List<AnonymousType#1>' to 'System.Collections.Generic.List<FirstApp.Model.TeamDetails>

问题描述

我收到此错误

无法隐式转换类型 System.Collections.Generic.List<AnonymousType#1>至 System.Collections.Generic.List<FirstApp.Model.TeamDetails>

Cannot implicitly convert type System.Collections.Generic.List<AnonymousType#1> to System.Collections.Generic.List<FirstApp.Model.TeamDetails>

我的代码怎么了?

这是我的代码

TeamDetails类

public class TeamDetails
{
    [Key]
    public int TeamId { get; set; }
    public string TeamName { get; set; }
    public string Description { get; set; }
    public int? UserCount { get; set; }
}

ViewModel

ViewModel

public class ViewTeamList
{
    public List<TeamDetails> TeamNext { get; set; }
}

控制器

public ActionResult Next(int dataid)
{
    ViewTeamList viewTeamList = new ViewTeamList();
    var a = from t in tDbContext.Teams
            join u in tDbContext.Users on t.TeamId equals u.TeamId into g
            where t.Deleted != true
            select new { TeamId= t.TeamId,TeamName = t.TeamName, Description = t.Description, UserId = g.Count() };

    var next = a.OrderBy(t1 => t1.TeamId).Where(t1 => t1.TeamId > dataid).FirstOrDefault();
    viewTeamList.TeamNext = a.ToList(); 
    return PartialView("_ViewTeamDetails", viewTeamList);
}

我无法将此值分配给

viewTeamList.TeamNext = a....; 

推荐答案

这将构造一个匿名类型，而不是TeamDetails

This constructs an anonymous type instead of TeamDetails

select new { TeamId= t.TeamId,TeamName = t.TeamName, Description = t.Description, UserId = g.Count() }

您应该将其更改为以下

select new TeamDetails { TeamId = t.TeamId, TeamName = t.TeamName, Description = t.Description, UserCount = g.Count() }

所以a.ToList()将是List<FirstApp.Model.TeamDetails>

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