数据库事务是否需要加上次数和时间的设定呢？

示例

For i As Integer=1 To 3\'准备循环3次

    Try

        Connections("数据源").BeginTransaction() \'开始事务

        Dim cmd As new SQLCommand

        cmd.C

        cmd.CommandText = "Delete Fr om {订单} Where [订单编号] = 32"

        cmd.ExecuteNonQuery

        cmd.CommandText = "Delete Fr om {订单明细} Where [订单编号] = 32"

        cmd.ExecuteNonQuery

        Connections("数据源").Commit \'提交事务,所有操作生效

        Exit For

    Catch ex As Exception \'如果出错

        If i=3 Then

            Connections("数据源").Rollback() \'回滚事务,撤销所有操作

            \'退出系统

        Else

            System.Threading.Thread.Sleep(3000) \'加个时间,3秒后继续?

            Continue For

        End If

    End Try

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