无法隐式转换为 BaseEntity<System.Guid>



我正在用.net core制作一个MVC应用程序,我被卡住了。在我的后退中,由于GUID问题,我的删除存在问题。我的变量"模型"给出了问题:

不能隐式将类型'overnight.models.security.applicationrole'转换为" overnight.models.baseentity"

我的rolecontroller.cs中的代码:

[HttpGet("[area]/[controller]/[action]/{id:Guid}")]
        public async Task<IActionResult> Delete(Guid id, [FromQuery] ActionType actionType)
        {
            var model = await ApplicationDbContext.Roles.FirstOrDefaultAsync(m => m.Id == id);
            if(model == null)
            {
                return RedirectToAction("Index");
            }
            var viewModel = new ActionRoleViewModel()
            {
                //error: Cannot implicitly convert type 'Overnight.Models.Security.ApplicationRole' to 'Overnight.Models.BaseEntity<System.Guid>'
                BaseEntity = model,
                ActionType = actionType
            };
            return View(viewModel);
        }

这是我的基础。cs:

namespace Overnight.Models
{
    public class BaseEntity<T> : IBaseEntity<T>
    {
        public T Id { get; set; }
        public DateTime CreatedAt { get; set; }
        public Nullable<DateTime> UpdatedAt { get; set; }
        public Nullable<DateTime> DeletedAt { get; set; }
    }
}

这是我的ActionRoleviewModel.cs:

namespace Overnight.Models.ViewModels
{
    public class ActionRoleViewModel : ActionBaseEntityViewModel<Guid>
    {
    }
}

这是我的applicationRole.cs:

namespace Overnight.Models.Security
{
    public class ApplicationRole : IdentityRole<Guid>
    {
        public DateTime CreatedAt {get; set;}
        public Nullable<DateTime> UpdatedAt {get; set;}
        public Nullable<DateTime> DeletedAt {get; set;}      
    }
}

我尝试制作不同的基础,而不是将GUID而不是T放置,但是我一直存在相同的错误

编辑:

这是我的ActionBaseEntityViewModel.cs:

namespace Overnight.Models.ViewModels
{
    public class ActionBaseEntityViewModel<T>: ActionViewModel
    {
        public BaseEntity<T> BaseEntity { get; set; }
    }
}

问题与错误所述一样。您正在尝试将ActionRoleViewModel.BaseEntity设置为ApplicationRole,但是ApplicationRole不会从基数继承,因此它们不兼容。

您可以将ActionRoleViewModel.BaseEntity属性修改为类型IBaseEntity<T>,然后将接口添加到ApplicationRole。这将创建必要的继承。

,您的ActionBaseEntityViewModel看起来像这样:

public class ActionBaseEntityViewModel<T>: ActionViewModel
{
    public IBaseEntity<T> BaseEntity { get; set; }
}

您的应用程序看起来像这样:

public class ApplicationRole : IdentityRole<Guid>, IBaseEntity<Guid>
{
    public DateTime CreatedAt {get; set;}
    public Nullable<DateTime> UpdatedAt {get; set;}
    public Nullable<DateTime> DeletedAt {get; set;}      
}

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