Question

提前感谢您收听我的问题。

我有一个Linq to Sql Class，我在网格上显示了特定的属性，我使用了ViewModel。

首先，我将通过部分课程粘贴我扩展课程的部分：

    public string Owner { get; private set; }
    public Int32 Documents { get; private set; }

    partial void OnLoaded()
    {
        Owner = "PersonCompanyRoleMedicalExam";
        Documents = sfdb.StoredFiles.Count(s => s.Owner == this.Owner && s.OwnerId == this.Id);
    }

接下来粘贴我用于网格的ViewModel：

public class MedicalExamViewModel
{
    public Int32 Id { get; set; }
    public Int32 PersonCompanyRoleId { get; set; }
    public Int32? PeriodInDays { get; set; }
    public DateTime? ExamCompleted { get; set; }
    public bool? MedicallyFit { get; set; }
    public Int32 Documents { get; set; }
}

然后最后我的方法从我的网格填充ajax来填充它：

    [GridAction]
    public ActionResult _MedicalExamGridAjaxBinding(Int32 Id)
    {
        PersonCompanyRole personCompanyRole = db.PersonCompanyRoles.Single(p => p.PersonId == Id);

        var model = from o in db.PersonCompanyRoleMedicalExams
                    where o.PersonCompanyRoleId == personCompanyRole.Id
                    select new MedicalExamViewModel
                    {
                        Id = o.Id,
                        PersonCompanyRoleId = o.PersonCompanyRoleId,
                        PeriodInDays = o.PeriodInDays,
                        ExamCompleted = o.ExamCompleted,
                        MedicallyFit = o.MedicallyFit,
                        Documents = o.Documents
                    };

        return View(new GridModel
        {
            Data = model
        });
    }

在“var model = from db in db.PersonCompanyRoleMedicalExams”中我刚刚破解，查看对象我得到了基础{System.SystemException} = {“类成员PersonCompanyRoleSHEAppointment.Documents未映射。”}

深入挖掘对象到System.SystemException异常中，在InnerException中它声明如下：_COMPlusExceptionCode = -532462766。

有趣的是，我使用完全相同的技术在我的项目中填充其他对象/模型没有任何问题，但有一个区别，那就是在它们之间有一个链接表。这样的事情：人 - ＆gt; PersonCompanyRole＆gt; PersonCompanyRoleMedicalExam。 PersonCompanyRole的人是一对一的关系，PersonCompanyRole与PersonCompanyRoleMedicalExam是一对多的关系。为了完整性，在我的ajax方法中粘贴，我没有任何例外。

    [GridAction]
    public ActionResult _IncidentsGridAjaxBinding(Int32 Id)
    {
        var structures = db.sp_GetCompanyStructureDecendants(Id);
        Collection<CompanyStructureIncident> companyStructureIncidents = new Collection<CompanyStructureIncident>();

        foreach (sp_GetCompanyStructureDecendantsResult decendant in structures)
        {
            IEnumerable<CompanyStructureIncident> equipment = db.CompanyStructureIncidents.Where(r => r.CompanyStructureId == decendant.Id);
            foreach (CompanyStructureIncident companyStructureIncident in equipment)
            {
                companyStructureIncidents.Add(db.CompanyStructureIncidents.Single(p => p.Id == companyStructureIncident.Id));
            }
        }



        var model = from o in companyStructureIncidents
                    //where o.CompanyStructureId == Id
                    select new IncidentViewModel
                    {
                        Id = o.Id,
                        CompanyStructureId = o.CompanyStructureId,
                        DateOfOccurence = o.DateOfOccurence,
                        DateReported = o.DateReported,
                        Documents = o.Documents
                    };

        return View(new GridModel
        {
            Data = model
        });
    }

希望你能提供帮助。

Answer 1

我想通了，而不是使用OnLoad（）我这样做：

    public string Owner
    {
        get { return "PersonCompanyRoleMedicalExam"; }
    }

    public Int32 Documents
    {
        get { return sfdb.StoredFiles.Count(s => s.Owner == this.Owner && s.OwnerId == this.Id); }
    }

非常感谢，希望这会有助于其他人。

Linq to SQL和MVC 2“类成员MyClass.MyProperty未映射._COMPlusExceptionCode = -532462766

1 个答案: