login page code in asp.net

The given code accept username and password from the user and check whether the entered username and password is valid.

Private Sub txtpwd_KeyPress(KeyAscii As Integer)
If KeyAscii = vbEnter Then
If Len(Trim(txtlogin)) > 0 And Len(Trim(txtpwd)) > 0 Then
If CheckPwd(txtlogin, txtpwd) = "ok" Then
MsgBox "Password ok"
Else
MsgBox "Wrong password or Login not found."
End If
Else
MsgBox "Login and password should not be blank"
End If
End If
End Sub
Private Function CheckPwd(cLogin As String, cPwd As String)

Dim rs As Recordset, ret As String
Set rs = opendatabase("c:\temp\login.mdb").openrecordset("select * from tbllogin where ucase(trim(logname)) = '" & UCase(Trim(cLogin)) & "'")
If rs.RecordCount <> 0 Then
If UCase(Trim(rs("pword"))) = UCase(Trim(cPwd)) Then
ret = "ok"
Else
ret = "wrong"
End If
Else
ret = "wrong"
End If
rs.Close: CheckPwd = ret
End Function