如何对写入ACCESS列表中的数据实行禁止同名文件

jy110120 2010-10-27 10:22:58

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

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panyong 2010-10-28

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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

jy110120 2010-10-28

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代码好像不对，还有其他什么代码吗？

chinaboyzyq 2010-10-27

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先查询，后入库。

lxq19851204 2010-10-27

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在数据库中把filename设为No Duplicates

panyong 2010-10-27

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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

panyong 2010-10-27

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MsgBox " 名称已经存在，请重新输入 ", 0 + 48, " 提示 "

panyong 2010-10-27

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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