以文本方式查看主题 -  Foxtable(狐表)  (http://www.foxtable.com/bbs/index.asp) --  专家坐堂  (http://www.foxtable.com/bbs/list.asp?boardid=2) ----  自定义函数中使用ExecuteReader得到DataTable，但引用函数时提示：不存在名为“dt”的DataTable  (http://www.foxtable.com/bbs/dispbbs.asp?boardid=2&id=28604)

--  作者：jinruan --  发布时间：2013/2/4 21:58:00 --  自定义函数中使用ExecuteReader得到DataTable，但引用函数时提示：不存在名为“dt”的DataTable Dim no As String \'单据编码 Dim nm As String  = Args(0) \'单据类型 Dim cmd1 As New SQLCommand Dim cmd2 As New SQLCommand cmd1.C cmd2.C Dim Key As Integer cmd1.commandText = "Select [顺序号] From [ss_num] Where  [单据类型]  = \'" & nm & "\'" Do     Key = cmd1.ExecuteScalar() \'从后台获得顺序号     cmd2.commandText = "Update [ss_num] Set [顺序号] = " & (Key + 1) & " Where [顺序号] = " & Key & " And [单据类型] = \'" & nm & "\'"     If cmd2.ExecuteNonQuery() > 0 Then \'更新顺序号         Exit Do \'更新成功则退出循环     End If Loop Dim cmd4 As New SQLCommand Dim dt As DataTable cmd4.C cmd4.CommandText = "Select * From [ss_num] Where  [单据类型]  = \'" & nm & "\'" dt = cmd4.ExecuteReader() Dim dr As DataRow dr = DataTables("dt").Find("[单据类型]  = \'" & nm & "\'") If dr IsNot Nothing Then \'如果找到的话     Dim s As New String("0", dr("序号位数"))     no =  Format(Args(2),dr("编码规则")) & "-" & Format(Key,s) \'生成编码 End If Return  no [此贴子已经被作者于2013-2-5 8:39:34编辑过]

--  作者：jinruan --  发布时间：2013/2/5 8:39:00 --   可以了！感谢！