关于网络编号的问题 - 专家坐堂 - Foxtable(狐表) - 新一代数据库软件，完美融合Access、Foxpro、Excel、vb.net之优势，人人都能掌握的快速软件开发工具!

Dim dr As DataRow = e.DataRow
Dim pf As String
If dr.RowState <> DataRowState.Added Then '如果不是新增行
    Return '那么返回
ElseIf dr.IsNull("日期") Then '如果没有输入日期
    e.Cancel = True '取消保存此行
    MessageBox.Show("必须输入日期!","提示",MessageBoxButtons.OK,MessageBoxIcon.Information)
    Return
Else
    pf = Format(dr("日期"),"yyMM") '否则获得编号的前缀,两位年,两位月
End If
Dim cmd1 As New SQLCommand
Dim cmd2 As New SQLCommand
Dim Key As Integer
cmd1.ConnectionName = "编号" '设置数据源名称
cmd2.ConnectionName = "编号"
cmd1.commandText = "Select Count(*) From [编号] Where [前缀] = '" & pf & "'"
If cmd1.ExecuteScalar = 0 Then '如果编号表不存在前缀的行,那么增加一行
    cmd1.commandtext = "Insert Into 编号 (前缀, 顺序号) Values('" & pf & "',1)"
    cmd1.ExecuteNonQuery
End If
cmd1.commandText = "Select [顺序号] From [编号] Where [前缀] = '" & pf & "'"
Do
    Key = cmd1.ExecuteScalar() '从后台获得顺序号
    cmd2.commandText = "Update [编号] Set [顺序号] = " & (Key + 1) & " Where [顺序号] = " & Key & " And [前缀] = '" & pf & "'"
    If cmd2.ExecuteNonQuery() > 0 Then '更新顺序号
        Exit Do '更新成功则退出循环
    End If
Loop
e.DataRow("编号") = pf & "-" & Format(Key,"0000")

加了表名列后怎么修改这个代码?

主题：关于网络编号的问题