如何对写入ACCESS列表中的数据实行禁止同名文件
Private Sub Command2_Click()Dim Getfilename As String
If Common1.filename <> vbNullString Then
con.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & App.Path & "\Data\Status.mdb;Persist Security Info=False"
con.Open
con.CursorLocation = adUseClient
Set rs = con.Execute("insert into tb_Paths (filename,Paths) values('" & Common1.FileTitle & "', '" & Common1.filename & "')")
con.Close
MsgBox "数据保存成功", 64, "提示信息"
End If
Set con = Nothing
Set rs = Nothing
End Sub
这个代码是把文件名和路径一起存放到ACCESS的TB_Paths中,但是没有限制同名文件,一个文件能够写入N次,现在我想在里面加一个能够禁止同名文件反复加入的代码,有msgbox信息提示的,求各位大侠帮帮忙,谢谢了 --------------------编程问答-------------------- --------------------编程问答-------------------- 在数据库中把filename设为No Duplicates --------------------编程问答-------------------- 先查询,后入库。 --------------------编程问答-------------------- 先查询,后入库。?
能说的详细点吗?最好能给点代码,我是新手,谢谢了 --------------------编程问答-------------------- --------------------编程问答--------------------
--------------------编程问答-------------------- MsgBox " 名称已经存在,请重新输入 ", 0 + 48, " 提示 "
FHPH = Replace(Trim(Text1.Text), "'", "''") '入货票号
Set rs = New ADODB.Recordset
strSql = "select * from Warehouse where INPUTVOTES='" & FHPH & "' "
rs.Open strSql, conn, adOpenStatic, adLockReadOnly
If rs.RecordCount <> 0 Then
MsgBox " ", 0 + 48, " "
rs.Close
Text1.Text = ""
Exit Sub
End If
--------------------编程问答-------------------- FHPH = Replace(Trim(Text1.Text), "'", "''") '名称
Set rs = New ADODB.Recordset
strSql = "select * from 表 where 名称='" & FHPH & "' "
rs.Open strSql, conn, adOpenStatic, adLockReadOnly
If rs.RecordCount <> 0 Then
MsgBox " 名称已经存在,请重新输入 ", 0 + 48, " 提示 "
rs.Close
Text1.Text = ""
Exit Sub
End If
--------------------编程问答-------------------- 代码好像不对,还有其他什么代码吗? --------------------编程问答-------------------- Private Sub Command2_Click()
Dim Getfilename As String
Dim strSql AS string
If Common1.filename <> vbNullString Then
con.CursorLocation = adUseClient
con.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & App.Path & "\Data\Status.mdb;Persist Security Info=False"
con.Open
Set rss = New ADODB.Recordset
strSql = "select * from tb_Paths where filename='" & Common1.FileTitle & "'"
rss.Open strSql, con, adOpenStatic, adLockReadOnly
if rss.recordcount > 0 then
msgbox"用户已经存在,请重新输入",0 + 48 ,"提示"
exit sub
end if
Set rs = con.Execute("insert into tb_Paths (filename,Paths) values('" & Common1.FileTitle & "', '" & Common1.filename & "')")
con.Close
MsgBox "数据保存成功", 64, "提示信息"
End If
Set con = Nothing
Set rs = Nothing
End Sub
补充:VB , 数据库(包含打印,安装,报表)