Dim LoginTbl As New LoginDS()
SqlDataAdapter1.SelectCommand.Parameters("@UID").Value = txtUserId.Text
SqlDataAdapter1.SelectCommand.Parameters("@PSWD").Value = txtPswd.Text
LoginTbl.Clear()
SqlDataAdapter1.Fill(LoginTbl)
If LoginTbl.Logins.Count = 0 Then
    lblErrMsg.Text = "User Id or password entered was invalid!"
    SqlConnection1.Close()
Else
    Response.Redirect("webform1.aspx?UID=" & txtUserId.Text & _
       "&pswd=" & txtPswd.Text)
    SqlConnection1.Close()
End If
