处理LINQtoSQL中的SQLite Autoincrement列映射

Question

我有下属实体

    [Table(Name = "Users")]
    public sealed class UserDB
    {
        private Int64 _id = -1;
        private string _username = string.Empty;

        public UserDB() { }

        public UserDB(RepositoryInfo repoInfo)
        {
            UserName = repoInfo.Account;
        }

        [Column(Name = "ID", Storage = "_id",  IsDbGenerated = true, IsPrimaryKey = true, UpdateCheck = UpdateCheck.Never)]
        public Int64 ID { get { return _id; } set { _id = value; } }

        [Column(Name = "UserName", DbType="nvarchar(50)", Storage = "_username")]
        public string UserName { get { return _username; } set { _username = value; } }
    }

ID映射到Autoincrement INTEGER类型列(实际上是SQLite中自动增量可能的唯一类型)

当我尝试像这样向DB添加新用户时,我收到一个错误:

public static Int64 AddUser(DataContext context, RepositoryInfo repoInfo)
{            
    UserDB udb = new UserDB(repoInfo);

    //an ID of udb is -1, but I tried different values too, doesn't change result
    var userstable = context.GetTable<UserDB>();
    userstable.InsertOnSubmit( udb );


    context.SubmitChanges(); // here I get a error, see on screen shot

    return udb.ID;

}

编辑 在谷歌搜索和检查后,似乎SQLite根本不提供任何SCOPE_IDENTITY()功能.但是Linq To SQL注入了它!

我怎么能改变这个？

Answer 1

实际上，我没有找到解决方案来解决这个问题，如果不是一个架构方案=>更改 linq 查询来更改输出的 SQL。