专家坐堂-下面这段代码可以向后台数据库写入数据吗？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!

以文本方式查看主题

-  Foxtable(狐表)  (http://foxtable.net/bbs/index.asp)
--  专家坐堂  (http://foxtable.net/bbs/list.asp?boardid=2)
----  下面这段代码可以向后台数据库写入数据吗？  (http://foxtable.net/bbs/dispbbs.asp?boardid=2&id=6212)

--  作者：lpxjw_zyl
--  发布时间：2010/3/17 9:31:00
--  下面这段代码可以向后台数据库写入数据吗？

for i as Double = 10000001 to 1000099

Dim cmd As New SQLCommand
cmd.CommandText = "Insert Into Xssj (_Identify,编号,产品) Values(\'" & i & "\'100,\'PD01\')"
cmd.C
cmd.ExecuteNonQuery()
next

--  作者：lpxjw_zyl
--  发布时间：2010/3/17 9:37:00
--
我试上述代码不报错，可是不增加数据，请帮忙解决。

--  作者：lpxjw_zyl
--  发布时间：2010/3/17 9:39:00
--

for i as Double = 10000001 to 1000099

Dim cmd As New SQLCommand
cmd.C
cmd.CommandText = "Insert Into Xssj (_Identify,编号,产品) Values(\'" & i & "\'100,\'PD01\')"

cmd.ExecuteNonQuery()
next

代码是这个代码，请问错在哪儿

--  作者：lpxjw_zyl
--  发布时间：2010/3/17 9:40:00
--

for i as Double = 10000001 to 1000099

Dim cmd As New SQLCommand
cmd.C
cmd.CommandText = "Insert Into Xssj (_Identify,编号,产品) Values(\'" & i & "\'100,\'PD01\')"

cmd.ExecuteNonQuery()
next

--  作者：lxl
--  发布时间：2010/3/17 9:46:00
--

以下是引用lpxjw_zyl在2010-3-17 9:31:00的发言：

for i as Double = 10000001 to 1000099

Dim cmd As New SQLCommand
cmd.CommandText = "Insert Into Xssj (_Identify,编号,产品) Values(\'" & i & "\'100,\'PD01\')"
cmd.C
cmd.ExecuteNonQuery()
next
_Identify列如果不是自动增量列的话可以。

代码还能修改一下：
Dim cmd As New SQLCommand
cmd.C
for i as Double = 10000001 to 1000099
      cmd.CommandText = "Insert Into Xssj (_Identify,编号,产品) Values(\'" & i & "\'100,\'PD01\')"
      cmd.ExecuteNonQuery()
next
这边能避免在循环中申明变量

--  作者：lxl
--  发布时间：2010/3/17 9:58:00
--

    Dim cmd As New SQLCommand
    cmd. Connectionname = "aaa"
    cmd.CommandText   = "set IDENTITY_INSERT Xssj ON "
    cmd.CommandText &= "Declare @i int "
    cmd.CommandText &= "set @i = 10000001 "
    cmd.CommandText &= "while @i < 10000100 "
    cmd.CommandText &= "begin "
    cmd.CommandText &= "Insert Into Xssj (_Identify,编号,产品) Values(@i,100,\'PD01\') "
    cmd.CommandText &= "set @i = @i + 1 "
    cmd.CommandText &= "end "
    cmd.CommandText &= "set IDENTITY_INSERT Xssj OFF "
    cmd.ExecuteNonQuery()

只向数据库提交一次请求，而原来的代码要提交100次请求。
_Identify是自增列也能正常插入

--  作者：lpxjw_zyl
--  发布时间：2010/3/17 10:10:00
--
for i as Double = 1000001 To 1000009
    Dim cmd As New SQLCommand
    cmd.C
    cmd.CommandText = "Insert Into Xssj (_Identify,编号,校名) Values(\'" & i & "\',100,\'重庆市梁平县\')"
    cmd.ExecuteNonQuery()
    output.show(i)
next