asp.net后台如何输出js脚本使用什么方法可以实现

/**//// <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>
/// 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);
}
}