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Hi, luc001!

I am using VB 2008 Express Edition and Access 2007. Here, i want some codes over the database connection issues like successful record updates after the connection is get closed, report generations and all with error handlings. So ll u please help me out with the issues.

Imports System.Data.OleDb
Public Class LoginForm1

Private Sub OK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OK.Click
        Dim con As New OleDbConnection("Provider=Microsoft.jet.oledb.4.0;data source=C:\Users\Euphoria\Documents\VodStore\VodStore\bin\Debug\VodStock.mdb")
        Dim cmd As OleDbCommand = New OleDbCommand("SELECT * FROM Users WHERE userid = '" & UsernameTextBox.Text & "' AND password = '" & PasswordTextBox.Text & "' ", con)
        Dim sdr As OleDbDataReader = cmd.ExecuteReader()
        ' If the record can be queried, Pass verification and open another form.   
        If (sdr.Read() = True) Then
            MessageBox.Show("Access Granted!")
            MessageBox.Show("Access Denied! Invalid username or password.")
        End If
    Catch es As Exception
    End Try
End Sub

Private Sub Cancel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Cancel.Click
End Sub

End Class

Here, i got a message of "Data type mismatch in crietria expression.". Please help me

What is the datatype of your UserID in the "User" table? You are providing String Type to check against them in your table.

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