protected void btnChange_Click(object sender, EventArgs e)
    {
        bool done = EmployeeDAL.ChangePassword(
            Session["employeeid"].ToString(),
            txtOldPassword.Text,
            txtNewPassword.Text);

        if (done)
        {
            lblMsg.Text = "Password Changed Successfully!";
        }
        else
        {
            lblMsg.Text = "Sorry! Could not change password! ";
        }
    }