/// <summary>
    /// 处理确定按钮点击事件
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void btConfirm_Click(object sender, EventArgs e)
    {
        Admin admin = new Admin();

        MD5CryptoServiceProvider HashMD5 = new MD5CryptoServiceProvider();
        string oldPwd =
            ASCIIEncoding.ASCII.GetString(HashMD5.ComputeHash(ASCIIEncoding.ASCII.GetBytes(tbOldPwd.Text)));
        string newPwd1 =
            ASCIIEncoding.ASCII.GetString(HashMD5.ComputeHash(ASCIIEncoding.ASCII.GetBytes(tbNewPwd1.Text)));
        string newPwd2 =
            ASCIIEncoding.ASCII.GetString(HashMD5.ComputeHash(ASCIIEncoding.ASCII.GetBytes(tdNewPwd2.Text)));

        if (admin.ChangePassword(Session["UserName"].ToString(), oldPwd, newPwd1, newPwd2))
        {
            //胡媛媛修改,修改跳转语句的位置,2010-01-15
            Page.ClientScript.RegisterStartupScript(this.GetType(), "Alert",
                "<script>alert('修改成功!');window.location='./index.aspx'</script>");
            //Response.Redirect("./index.aspx");
            //胡媛媛修改,修改跳转语句的位置,2010-01-15
        }
        else
        {
            Page.ClientScript.RegisterStartupScript(this.GetType(), "Alert",
                "<script>alert('对不起,您修改密码失败,原因可能是您输入的原密码不正确或是两次输入的新密码不一致!')</script>");
        }
    }