我有一個LINQ到SQL生成類具有隻讀屬性:如何修改只讀Linq的財產
<Column(Name:="totalLogins", Storage:="_TotalLogins", DbType:="Int", UpdateCheck:=UpdateCheck.Never)> _
Public ReadOnly Property TotalLogins() As System.Nullable(Of Integer)
Get
Return Me._TotalLogins
End Get
End Property
這可以防止被外部改變,但是我想從內部更新屬性我類如下:
Partial Public Class User
...
Public Shared Sub Login(Username, Password)
ValidateCredentials(UserName, Password)
Dim dc As New MyDataContext()
Dim user As User = (from u in dc.Users select u where u.UserName = Username)).FirstOrDefault()
user._TotalLogins += 1
dc.SubmitChanges()
End Sub
...
End Class
但是user._TotalLogins + = 1的調用沒有被寫入數據庫?有關如何讓LINQ查看我的更改的任何想法?