登录问题？？请帮忙

[purerain]

本人刚刚学VB，我想做一个登录框，在text1中输入ID，text2中输入密码。
然后把他们和access中数据库中的assistant表中的ID和密码比较，为什么运行时会有错误？

Private Sub Command1_Click()
Dim cnn As New ADODB.Connection
Dim rs As New ADODB.Recordset
Dim StrSql As String
cnn.Open "provider=Microsoft.Jet.OLEDB.4.0;data source=" & App.Path & "\libary1.mdb"
rs.Open "select 1 from [assistant] where ID='" & Text1.Text & "' and 密码='" & Text2.Text & "'", cnn, adOpenKeyset, adLockBatchOptimistic
If rs.EOF Then
MsgBox "不存在此用户名与密码"
Else
'登录
End If
rs.Close
End Sub

[lsftest]

rs.Open "select * from [assistant] where ID='" & Text1.Text & "' and 密码='" & Text2.Text & "'", cnn, adOpenKeyset, adLockBatchOptimistic

另外检查id、密码字段的数据类型，如果是数值类型要把对应的单引号去掉。。。

[饮水需思源]

'这样试试：
Private Sub Command1_Click()
Dim cnn As New ADODB.Connection
Dim rs As New ADODB.Recordset
Dim StrSql As String
cnn.Open "provider=Microsoft.Jet.OLEDB.4.0;data source=" & App.Path & "\libary1.mdb"
if rs.state=adstateopen then rs.close
rs.Open "select * from assistant where [ID]='" & Text1.Text & "' and 密码='" & Text2.Text & "'", cnn, adOpenKeyset, adlockreadonly
If rs.recordcount=0 Then
MsgBox "不存在此用户名与密码"
Else
'登录
End If
rs.Close
End Sub

[lizifang]

Private Sub cmdOK_Click(Cancel As Boolean)

Dim conn As New ADODB.Connection
Dim rs As New ADODB.Recordset
Dim sql
Dim ConnectString As String
ConnectString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & App.Path & "\libary1.mdb;Persist Security Info=False;Jet OLEDB"
conn.Open ConnectString

sql = "select * from assistant where ID='" & text1.text & "' and 密码='" & text2.Text & "'"
rs.Open sql, conn
If rs.EOF Then
MsgBox "用户名或密码错,请重新输入!", , "登录"
Else

Unload Me
MDIForm1.Show
End If
rs.Close

End Sub

[purerain]

谢谢楼上的大哥啊