如何转换RoleViewModel列表中的匿名列表？

Question

在我的操作方法中，我运行以下查询，该查询返回一个列表：

y

我有一个相同格式的viemodel，如下所示：

var list = db.WorkRoles.
                Join(db.WorkRolesUsersDetails,
                o => o.WorkRoleId, od => od.WorkRoleId,
                (o, od) => new
                {
                    WorkRoleId = o.WorkRoleId,
                    RoleName = o.RoleName,
                    RoleDescription = o.RoleDescription,
                    CompanyId = o.CompanyId,
                    WRUDId = od.WRUDId,
                    UserDetailsId = od.UserDetailsId,
                    FocusStart = od.FocusStart,
                    FocusEnd = od.FocusEnd
                }).ToList();

将查询结果转换为viewmodel列表的最佳方法是什么？

Answer 1

如果您不希望您的操作方法知道View Model类型，那么您可以尝试以下操作。

1. 在初始列表中使用Select，并为每个项目构建RoleViewModel。

2. 使用AutoMapper库为您完成这项工作。

   var list = db.WorkRoles. Join(db.WorkRolesUsersDetails, o => o.WorkRoleId, od => od.WorkRoleId, (o, od) => new { WorkRoleId = o.WorkRoleId, RoleName = o.RoleName, RoleDescription = o.RoleDescription, CompanyId = o.CompanyId, WRUDId = od.WRUDId, UserDetailsId = od.UserDetailsId, FocusStart = od.FocusStart, FocusEnd = od.FocusEnd }).ToList() .Select(item => new RoleViewModel( item.WorkRoleId, item.RoleName, item.RoleDescription, item.CompanyId, item.WRUDId, item.UserDetailsId, item.FocusStart, item.FocusEnd));

Answer 2

var list = db.WorkRoles.
            Join(db.WorkRolesUsersDetails,
            o => o.WorkRoleId, od => od.WorkRoleId,
            (o, od) => new RoleViewModel(
                o.WorkRoleId,
                o.RoleName,
                o.RoleDescription,
                o.CompanyId,
                od.WRUDId,
                od.UserDetailsId,
                od.FocusStart,
                od.FocusEnd
            )).ToList();