我在Windows Phone 7平台上创建了一个数据库。表格中的一个定义如下。
[Table]
public class Playlist : BaseTable
{
// Define ID: private field, public property, and database column.
private int _id;
[Column(DbType = "INT NOT NULL IDENTITY", IsDbGenerated = false, CanBeNull=false, IsPrimaryKey = true)]
public int Id
{
get { return _id; }
set
{
NotifyPropertyChanging("PlaylistId");
_id = value;
NotifyPropertyChanged("PlaylistId");
}
}
// some other field
//.......
}
我不希望字段“id”由db生成,所以“IsDbGenerated = false”,但插入一条记录时出现异常: db.Playlists.InsertOnSubmit(新播放列表{Id =(int)DefalutPlaylist.Default,Name =“默认播放列表”,Group = 0,Type = 0});
它说“无法修改列[列名= id]”
谁能帮助我...答案 0 :(得分:4)
在DbType中删除“IDENTITY”值如下:
[Column(DbType = "INT NOT NULL", IsDbGenerated = false, CanBeNull=false, IsPrimaryKey = true)]
干杯