C# .net 从具体化的“System.Int32”类型到“System.Int64”类型的指定转换无效

Question

C#/.Net 4.6.1/Visual Studio 2017

我遇到了 MS SQL 查询问题。该查询将跨两个数据库（在同一台服务器上）的多个表连接起来。结果进入“对象”列表。我得到的例外是：

从具体化的“System.Int32”中指定的演员表 'System.Int64' 类型的类型无效。

我已经看到有关此错误和类似错误的其他 SO 问题，但我在这里没有看到问题。 personId 很长。所有各种...Id 字段在数据库中为bigint，在模型中为long。

查询是：

try {
    var personId = GetPersonId(netid);

    var personIdParam = new SqlParameter {
        Value = personId,
        DbType = DbType.Int64,
        ParameterName = "PERSONID"
    };

    using (var pdb = new PersonnelContext()) {
        var foo = pdb.Database.SqlQuery<PersonToSpaceInfo>(@"
        SELECT
               'Member',
               sGroup.GroupId,
               sGroup.PersonnelGroupId,
               sGroup.Name,
               Space.SpaceId,
               Space.RoomId,
               SiteSpaceUse.TypeDescription
        FROM
             Personnel.Personnel.Memberships AS Memberships
             INNER JOIN Space.dbo.Person AS Person
                 ON Memberships.PersonId = Person.PersonnelPersonId
                    AND Person.PersonnelPersonId = @PERSONID
             INNER JOIN Space.dbo.[Group] AS sGroup
                 ON Memberships.GroupId = sGroup.PersonnelGroupId
             INNER JOIN Space.dbo.GroupList AS GroupList
                 ON sGroup.GroupId = GroupList.GroupId
             INNER JOIN Space.dbo.Space AS Space
                 ON GroupList.SpaceId = Space.SpaceId
                    AND Space.IsActive = 1
             INNER JOIN Space.dbo.SiteSpaceUse AS SiteSpaceUse
                 ON Space.SpaceId = SiteSpaceUse.SpaceId
        WHERE  GETDATE() BETWEEN Memberships.StartDate 
                         AND ISNULL(Memberships.EndDate, GETDATE())
        ",
            personIdParam).ToList();
    }
} catch (Exception e) {
    throw new Exception("get group list failed: " + e.Message);
}

结果对象是：

public class PersonToSpaceInfo {
    public string PersonType { get; set; }
    public long GroupId { get; set; }
    public long PersonnelGroupId { get; set; }
    public string GroupName { get; set; }
    public long SpaceId { get; set; }
    public string RoomId { get; set; }
    public string TypeDescription { get; set; }
}

堆栈跟踪：

at System.Data.Entity.Core.Common.Internal.Materialization.Shaper.ErrorHandlingValueReader`1.GetValue(DbDataReader reader, Int32 ordinal) 
at lambda_method(Closure , Shaper ) 
at System.Data.Entity.Core.Common.Internal.Materialization.Coordinator`1.ReadNextElement(Shaper shaper) 
at System.Data.Entity.Core.Common.Internal.Materialization.Shaper`1.SimpleEnumerator.MoveNext()
at System.Data.Entity.Internal.LazyEnumerator`1.MoveNext()
at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
at MyProject.Controllers.HomeController.GetUserActiveGroups(String user) in C:\Users\me\Projects\MyProject\MyProject\Controllers\HomeController.cs:line 560

编辑

堆栈跟踪中的第 560 行是上面的 var foo = pdb.Database... 行。 GetPersonId() 返回long。

模型是使用代码优先界面创建的。以下是@mjwills 要求的模型sn-ps

GroupList.GroupId / GroupList.SpaceId

public partial class GroupList {
    public long GroupId { get; set; }
    public long SpaceId { get; set; }
    ...
}

Memberships.GroupId / Memberships.PersonId

public partial class Membership {
    public long PersonId { get; set; }
    public long GroupId { get; set; }
    ...
}

Person.PersonnelPersonId

public partial class Person {
    public long PersonId { get; set; }
    public long PersonnelPersonId { get; set; }
    ...
}

SiteSpaceUse.SpaceId

public partial class SiteSpaceUse {
    public long SpaceId { get; set; }
    ...
}

Space.SpaceId

public partial class Space 
    public long SpaceId { get; set; }
    public long BuildingId { get; set; }
    ...
}

sGroup.GroupId / sGroup.PersonnelGroupId

public partial class Group {
    public long GroupId { get; set; }
    public long PersonnelGroupId { get; set; }
    ...
}

编辑 2 刚刚尝试用有效的三位数替换查询中的SqlParameter，但我仍然收到错误消息。该查询在 SQL Server Management Studio 中工作。我将删除模型和连接字符串信息并重新创建以查看会发生什么。

发生的事情是注意到变化......

Answer 1

我修好了。事实证明，其中一个数据库上下文连接指向生产数据库服务器。生成的错误消息没有帮助。