Dim con As New Data.SqlClient.SqlConnection
        Dim cmd As New Data.SqlClient.SqlCommand
        Dim retValue As New Integer

        Dim conString As String = ConfigurationManager.ConnectionStrings   ("LoginConnectionString").ConnectionString
        con.ConnectionString = conString
        Dim cmdString As String = "SELECT COUNT(*) FROM Logins WHERE Username = '" + txtUsername.Text + "' AND Password = '" + txtPassword.Text + "'"
        cmd.CommandText = cmdString
        cmd.Connection = con
        con.Open()
        retValue = cmd.ExecuteScalar()
        con.Close()

        If (retValue > 0) Then
            Label1.Text = "Welcome " + unameTxt.Text + " !!! You  are successfully signed in."
        Else
            Label1.Text = "Incorrect login.. Check the username and password again."
        End If