asp.net的MessageBox

public class MessageBox
{
    public enum MsgButton
    {
        /// <summary>
        /// 只是OK按钮
        /// </summary>
        OK = 1,
        /// <summary>
        /// 提示是否确定
        /// </summary>
        OKCancel = 2
    }
    public enum GoBack
    {
        /// <summary>
        /// 返回上一页面
        /// </summary>
        Yes = 1,
        /// <summary>
        /// 不返回
        /// </summary>
        No = 0
    }
    public static void Show(string msg)
    {

        HttpContext.Current.Response.Write("<script language='javascript'>alert('" + msg + "');</script>");
    }
    public static void Show(string msg, MsgButton ConFirmButton)
    {
        switch (ConFirmButton)
        {
            case MsgButton.OK:
                HttpContext.Current.Response.Write("<script language='javascript'>alert('" + msg + "');</script>");
                break;
            case MsgButton.OKCancel:
                HttpContext.Current.Response.Write("<script language='javascript'>confirm('" + msg + "')</script>");
                break;
        }
    }
    /// <summary>
    /// 弹出消息
    /// </summary>
    /// <param name="msg">消息</param>
    /// <param name="ConFirmButton">消息类型</param>
    public static void Show(string msg, MsgButton ConFirmButton, GoBack Gbk)
    {
        string GobackScript = (Gbk == GoBack.Yes) ? "history.go(-1)" : "";

        switch (ConFirmButton)
        {
            case MsgButton.OK:
                HttpContext.Current.Response.Write("<script language='javascript'>alert('" + msg + "');" + GobackScript + "</script>");
                break;
            case MsgButton.OKCancel:
                HttpContext.Current.Response.Write("<script language='javascript'>confirm('" + msg + "')</script>");
                break;
        }
    }
    /// <summary>
    /// 关闭窗口
    /// </summary>
    public static void ClosePage()
    {
        HttpContext.Current.Response.Write("<script>  window.opener=null ;window.close();  </script>");
    }
    /// <summary>
    /// 关闭窗口
    /// </summary>
    /// <param name="Msg">是否弹出信息</param>
    public static void ClosePage(bool Msg)
    {
        if (Msg)
        {
            HttpContext.Current.Response.Write("<script> window.close();  </script>");
        }
        else
        {
            HttpContext.Current.Response.Write("<script>  window.opener=null ;window.close();</script>");
        }
    }

    public MessageBox()
    {
        //
        // TODO: 在此处添加构造函数逻辑
        //
    }
    /// <summary>
    /// 显示消息提示对话框
    /// </summary>
    /// <param name="page">当前页面指针，一般为this</param>
    /// <param name="msg">提示信息</param>
    public static void Show(System.Web.UI.Page page, string msg)
    {
        page.RegisterStartupScript("message", "<script language='javascript' defer>alert('" + msg.ToString() + "');</script>");
    }

    /// <summary>
    /// 控件点击 消息确认提示框
    /// </summary>
    /// <param name="page">当前页面指针，一般为this</param>
    /// <param name="msg">提示信息</param>
    public static void ShowConfirm(System.Web.UI.WebControls.WebControl Control, string msg)
    {
        //Control.Attributes.Add("onClick","if (!window.confirm('"+msg+"')){return false;}");
        Control.Attributes.Add("onclick", "return confirm('" + msg + "');");
    }

    /// <summary>
    /// 显示消息提示对话框，并进行页面跳转
    /// </summary>
    /// <param name="page">当前页面指针，一般为this</param>
    /// <param name="msg">提示信息</param>
    /// <param name="url">跳转的目标URL</param>
    public static void ShowAndRedirect(System.Web.UI.Page page, string msg, string url)
    {
        StringBuilder Builder = new StringBuilder();
        Builder.Append("<script language='javascript' defer>");
        Builder.AppendFormat("alert('{0}');", msg);
        Builder.AppendFormat("top.location.href='{0}'", url);
        Builder.Append("</script>");
        page.RegisterStartupScript("message", Builder.ToString());

    }
    /// <summary>
    /// 输出自定义脚本信息
    /// </summary>
    /// <param name="page">当前页面指针，一般为this</param>
    /// <param name="script">输出脚本</param>
    public static void ResponseScript(System.Web.UI.Page page, string script)
    {
        page.RegisterStartupScript("message", "<script language='javascript' defer>" + script + "</script>");
    }

}