web 页面通用语句

   protected void Page_Load(object sender, EventArgs e)
    {
        try
        {
            if (!this.IsPostBack)
            {
                // login ok?
                // power
                // write hisLog
            }

            this.lblMessage.Text = string.Empty;
        }
        catch (Exception ex)
        {
            this.lblMessage.Text = ex.Message;
            Logger.Write(ex);
        }
    }

#region property