asp.net弹出alert提示框

///<summary>
    /// 信息输出通用方法
    ///</summary>
publicclass MessageObject
    {
        ///<summary>
        /// 一般输出
        ///</summary>
        ///<param name="str"></param>
publicstaticvoid Write(string str)
        {
            System.Web.HttpContext.Current.Response.Write(str);
        }
        ///<summary>
        /// 显示一段自定义的输出代码
        ///</summary>
        ///<param name="MyPage"></param>
        ///<param name="strCode"></param>
publicstaticvoid ShowJS(System.Web.UI.Page MyPage, string strCode)
        {
            StringBuilder sb =new StringBuilder();
            sb.Append("<script language=\"javascript\"> ");
            sb.Append(strCode.Trim());
            sb.Append("</script>");
            MyPage.Response.Write(sb.ToString());
        }
        ///<summary>
        /// 页面重载
        ///</summary>
publicstaticvoid Location()
        {
            StringBuilder sb =new StringBuilder();
            sb.Append("<script language=\"javascript\"> ");
            sb.Append("window.location.href=window.location.href;");
            sb.Append("</script>");
            System.Web.HttpContext.Current.Response.Write(sb.ToString());
        }
        ///<summary>
        /// 显示一个弹出窗口
        ///</summary>
        ///<param name="str"></param>
publicstaticvoid Show(string str)
        {
            StringBuilder sb =new StringBuilder();
            sb.Append("<script language=\"javascript\"> ");
            sb.Append("alert(\"" + str.Trim() + "\"); ");
            sb.Append("</script>");
            System.Web.HttpContext.Current.Response.Write(sb.ToString());
        }
        ///<summary>
        /// 显示一个弹出窗口，并关闭当前页
        ///</summary>
        ///<param name="str"></param>
publicstaticvoid ShowClose(string str)
        {
            System.Text.StringBuilder sb =new System.Text.StringBuilder();
            sb.Append("<script language=\"javascript\"> ");
            sb.Append("alert(\"" + str.Trim() + "\"); ");
            sb.Append("window.close(); ");
            sb.Append("</script> ");
            System.Web.HttpContext.Current.Response.Write(sb.ToString());
        }
        ///<summary>
        /// 显示一个弹出窗口，并转向当前页(刷新)
        ///</summary>
        ///<param name="str"></param>
publicstaticvoid ShowLocation(string str)
        {
            StringBuilder sb =new StringBuilder();
            sb.Append("<script language=\"javascript\"> ");
            sb.Append("alert(\"" + str.Trim() + "\"); ");
            sb.Append("window.location.href=window.location.href; ");
            sb.Append("</script>");
            System.Web.HttpContext.Current.Response.Write(sb.ToString());
        }
        ///<summary>
        /// 显示一个弹出窗口，并转向目标页(导航)
        ///</summary>
        ///<param name="str"></param>
        ///<param name="url"></param>
publicstaticvoid ShowRedirect(string str, string url)
        {
            StringBuilder sb =new StringBuilder();
            sb.Append("<script language=\"javascript\"> ");
            sb.Append("alert(\"" + str.Trim() + "\"); ");
            sb.Append("window.location.href=\"" + url.Trim() + "\"; ");
            sb.Append("</script>");
            System.Web.HttpContext.Current.Response.Write(sb.ToString());
        }
        ///<summary>
        /// 显示一个弹出窗口，并转向上一页
        ///</summary>
        ///<param name="str"></param>
publicstaticvoid ShowPre(string str)
        {
            StringBuilder sb =new StringBuilder();
            sb.Append("<script language=\"javascript\"> ");
            sb.Append("alert(\"" + str.Trim() + "\"); ");
            sb.Append("var p=document.referrer; ");
            sb.Append("window.location.href=p; ");
            sb.Append("</script>");
            System.Web.HttpContext.Current.Response.Write(sb.ToString());
        }
        ///<summary>
        /// 重定向
        ///</summary>
        ///<param name="url"></param>
publicstaticvoid RedirectPage(string url)
        {
            string path ="http://"+ System.Web.HttpContext.Current.Request.Url.Host + url;
            StringBuilder sb =new StringBuilder();
            sb.Append("<script language=\"javascript\"> ");
            sb.Append(string.Format("window.location.href='{0}';", @path));
            sb.Append("</script>");
            System.Web.HttpContext.Current.Response.Write(sb.ToString());
        }
    }