C # encapsulated JS (JavaScript) class of operation codes

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using System.Web;

namespace DotNet.Utilities
{
    public class JsHelper
    {
        public static void AlertAndRedirect(string message, string toURL)
        {
            string js = "<script language=javascript>alert('{0}');window.location.replace('{1}')</script>";
            HttpContext.Current.Response.Write(string.Format(js, message, toURL));
            HttpContext.Current.Response.End();
        }

        public static void AlertAndGoHistory(string message, int value)
        {
            string js = @"<Script language='JavaScript'>alert('{0}');history.go({1});</Script>";
            HttpContext.Current.Response.Write(string.Format(js, message, value));
            HttpContext.Current.Response.End();
        }

        public static void Redirect(string toUrl)
        {
            string js = @"<script language=javascript>window.location.replace('{0}')</script>";
            HttpContext.Current.Response.Write(string.Format(js, toUrl));
        }

        public static void AlertAndParentUrl(string message, string toURL)
        {
            string js = "<script language=javascript>alert('{0}');window.top.location.replace('{1}')</script>";
            HttpContext.Current.Response.Write(string.Format(js, message, toURL));
        }

        public static void ParentRedirect(string ToUrl)
        {
            string js = "<script language=javascript>window.top.location.replace('{0}')</script>";
            HttpContext.Current.Response.Write(string.Format(js, ToUrl));
        }

        public static void BackHistory(int value)
        {
            string js = @"<Script language='JavaScript'>history.go({0});</Script>";
            HttpContext.Current.Response.Write(string.Format(js, value));
            HttpContext.Current.Response.End();
        }

        public static void Alert(string message)
        {
            string js = "<script language=javascript>alert('{0}');</script>";
            HttpContext.Current.Response.Write(string.Format(js, message));
        }

        public static void RegisterScriptBlock(System.Web.UI.Page page, string _ScriptString)
        {
            page.ClientScript.RegisterStartupScript(page.GetType(), "scriptblock", "<script type='text/javascript'>" + _ScriptString + "</script>");
        }
    }
}