VB.NET Transaction和SQLDataReader

Question

请查看以下代码：

Public Function Orphand() 
        Dim objCon As SqlConnection
        Dim objCommand As SqlCommand
        Dim objCommand2 As SqlCommand
        Dim objCommand3 As SqlCommand
        Dim objDR As SqlDataReader
        Dim transaction As SqlTransaction
        Try
            objCon = New SqlConnection(_ConString)
            objCommand = New SqlCommand
            objCommand2 = New SqlCommand
            objCommand3 = New SqlCommand
            objCommand.Connection = objCon
            objCommand2.Connection = objCon
            objCommand3.Connection = objCon
            objCon.Open()
            transaction = objCon.BeginTransaction
            objCommand.Transaction = transaction
            objCommand2.Transaction = transaction
            objCommand3.Transaction = transaction
            Using objCon
                objCommand.CommandText = "SELECT TOP 3 * FROM dbReviews"
                objDR = objCommand.ExecuteReader
                Do While objDR.Read
                    objCommand2.CommandText = "INSERT INTO dbReviewChangesVALUES (1,1,'1',1,'2012-01-09')"
                    objCommand2.ExecuteNonQuery()
                    objCommand3.CommandText = "INSERT INTO dbReviewChangesVALUES (1,1,'1',1,'2012-01-09')"
                    objCommand3.ExecuteNonQuery()
                Loop
                transaction.Commit()
                objDR.Close()
            End Using
        Catch ex As Exception

        End Try
    End Function
End Class

有没有办法在每个循环上提交事务，而不是等到所有记录循环或这是一种不好的做法？

我花了一些时间谷歌搜索这个。我不认为我会发一个问题，但我没有找到答案。

Answer 1

是的，在你的循环中打开一个事务。