ASP.NET中常用输出JS脚本的类

在ASP.NET中我们经常需要输出一些JS脚本，比如弹出一个警告窗口，返回到历史页面等JS功能，我看到网上好多这方面的代码，以下代码是其中之一。

整个程序的代码如下：
using System;
using System.Collections.Generic;
using System.Text;
using System.Web;
using System.Web.UI;

/// <summary>
    /// 弹出JavaScript小窗口
    /// </summary>
    /// <param name="js">窗口信息</param>
    public static void Alert(string message, Page page)
    {
        #region
        string js = @"<Script language='JavaScript'>
                    alert('" + message + "');</Script>";
        //HttpContext.Current.Response.Write(js);
        if (!page.ClientScript.IsStartupScriptRegistered(page.GetType(), "alert"))
        {
            page.ClientScript.RegisterStartupScript(page.GetType(), "alert", js);
        }
        #endregion
    }

    /// <summary>
    /// 弹出消息框并且转向到新的URL
    /// </summary>
    /// <param name="message">消息内容</param>
    /// <param name="toURL">连接地址</param>
    public static void AlertAndRedirect(string message, string toURL, Page page)
    {
        #region
        string js = "<script language=javascript>alert('{0}');window.location.replace('{1}')</script>";
        //HttpContext.Current.Response.Write(string.Format(js, message, toURL));
        if (!page.ClientScript.IsStartupScriptRegistered(page.GetType(), "AlertAndRedirect"))
        {
            page.ClientScript.RegisterStartupScript(page.GetType(), "AlertAndRedirect", string.Format(js, message, toURL));
        }
        #endregion
    }

    /// <summary>
    /// 回到历史页面
    /// </summary>
    /// <param name="value">-1/1</param>
    public static void GoHistory(int value, Page page)
    {
        #region
        string js = @"<Script language='JavaScript'>
                    history.go({0}); 
                  </Script>";
        //HttpContext.Current.Response.Write(string.Format(js, value));
        if (!page.ClientScript.IsStartupScriptRegistered(page.GetType(), "GoHistory"))
        {
            page.ClientScript.RegisterStartupScript(page.GetType(), "GoHistory", string.Format(js, value));
        }
        #endregion
    }

     /// <summary>
     /// 关闭当前窗口
    /// </summary>
    public static void CloseWindow()
     {
    #region
    string js = @"<Script language='JavaScript'>
                      parent.opener=null;window.close();  
                 </Script>";
    HttpContext.Current.Response.Write(js);
    HttpContext.Current.Response.End();
    #endregion
    }

    /// <summary>
    /// 刷新父窗口
    /// </summary>
    public static void RefreshParent(string url, Page page)
    {
        #region
        string js = @"<Script language='JavaScript'>
                    window.opener.location.href='" + url + "';window.close();</Script>";
        //HttpContext.Current.Response.Write(js);
        if (!page.ClientScript.IsStartupScriptRegistered(page.GetType(), "RefreshParent"))
        {
            page.ClientScript.RegisterStartupScript(page.GetType(), "RefreshParent", js);
        }
        #endregion
    }

    /// <summary>
    /// 刷新打开窗口
    /// </summary>
    public static void RefreshOpener(Page page)
    {
        #region
        string js = @"<Script language='JavaScript'>
                    opener.location.reload();
                  </Script>";
        //HttpContext.Current.Response.Write(js);
        if (!page.ClientScript.IsStartupScriptRegistered(page.GetType(), "RefreshOpener"))
        {
            page.ClientScript.RegisterStartupScript(page.GetType(), "RefreshOpener", js);
        }
        #endregion
    }

    /// <summary>
    /// 打开指定大小的新窗体
    /// </summary>
    /// <param name="url">地址</param>
    /// <param name="width">宽</param>
    /// <param name="heigth">高</param>
    /// <param name="top">头位置</param>
    /// <param name="left">左位置</param>
    public static void OpenWebFormSize(string url, int width, int heigth, int top, int left, Page page)
    {
        #region
        string js = @"<Script language='JavaScript'>window.open('" + url + @"','','height=" + heigth + ",width=" + width + ",top=" + top + ",left=" + left + ",location=no,menubar=no,resizable=yes,scrollbars=yes,status=yes,titlebar=no,toolbar=no,directories=no');</Script>";
        //HttpContext.Current.Response.Write(js);
        if (!page.ClientScript.IsStartupScriptRegistered(page.GetType(), "OpenWebFormSize"))
        {
            page.ClientScript.RegisterStartupScript(page.GetType(), "OpenWebFormSize", js);
        }
        #endregion
    }

    /// <summary>
    /// 转向Url制定的页面
    /// </summary>
    /// <param name="url">连接地址</param>
    public static void JavaScriptLocationHref(string url, Page page)
    {
        #region
        string js = @"<Script language='JavaScript'>
                    window.location.replace('{0}');
                  </Script>";
        js = string.Format(js, url);
        //HttpContext.Current.Response.Write(js);
        if (!page.ClientScript.IsStartupScriptRegistered(page.GetType(), "JavaScriptLocationHref"))
        {
            page.ClientScript.RegisterStartupScript(page.GetType(), "JavaScriptLocationHref", js);
        }
        #endregion
    }

    /// <summary>
    /// 打开指定大小位置的模式对话框
    /// </summary>
    /// <param name="webFormUrl">连接地址</param>
    /// <param name="width">宽</param>
    /// <param name="height">高</param>
    /// <param name="top">距离上位置</param>
    /// <param name="left">距离左位置</param>
    public static void ShowModalDialogWindow(string webFormUrl, int width, int height, int top, int left, Page page)
    {
        #region
        string features = "dialogWidth:" + width.ToString() + "px"
            + ";dialogHeight:" + height.ToString() + "px"
            + ";dialogLeft:" + left.ToString() + "px"
            + ";dialogTop:" + top.ToString() + "px"
            + ";center:yes;help=no;resizable:no;status:no;scroll=yes";
        ShowModalDialogWindow(webFormUrl, features, page);
        #endregion
    }
    /// <summary>
    /// 弹出模态窗口
    /// </summary>
    /// <param name="webFormUrl"></param>
    /// <param name="features"></param>
    public static void ShowModalDialogWindow(string webFormUrl, string features, Page page)
    {
        string js = ShowModalDialogJavascript(webFormUrl, features);
        //HttpContext.Current.Response.Write(js);
        if (!page.ClientScript.IsStartupScriptRegistered(page.GetType(), "ShowModalDialogWindow"))
        {
            page.ClientScript.RegisterStartupScript(page.GetType(), "ShowModalDialogWindow", js);
        }
    }
    /// <summary>
  /// 弹出模态窗口
  /// </summary>
  /// <param name="webFormUrl"></param>
  /// <param name="features"></param>
    /// <returns></returns>
    public static string ShowModalDialogJavascript(string webFormUrl, string features)
    {
    #region
    string js = @"<script language=javascript>                           
    showModalDialog('" + webFormUrl + "','','" + features + "');</script>";
    return js;
    #endregion
    }

/**////<summary>
///使控件获得焦点
///</summary>
///<param nama="str_ctl_name">获得控件的id值，比如：txt_name</param>
///</param name="page">Page 类</param>
public void GetForcus(string str_Ctl_Name ,Page page)
{
 page.RegisterStartScript("","<script>document.forms(0)."+str_Ctl_Name+".focus();
 document.forms(0)."+str_Ctl_Name+".select();</script>");
}

/**////<summary>
///名称：redirect
///功能：页面转向
///参数：url
///返回值：空
///</summary>
public void redirect(string url,Page page)
{
 page.RegisterStartScript("","<script>window.top.document.location.href='"+url+"';</script>");
}