File Download Using JavaScript

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace FileDownloadUsingJavascript
{
    public partial class FileHandler : System.Web.UI.Page
    {
        private const string APP_SCRIPTS = "appLoaderScripts";
        protected void Page_Load(object sender, EventArgs e)
        {
            Type type = this.GetType();
            if (!this.ClientScript.IsClientScriptIncludeRegistered(type, "scrScripts"))
                this.ClientScript.RegisterClientScriptInclude(type, "scrScripts", "Common/Loaders/LoadScripts.aspx");
            if (!this.ClientScript.IsStartupScriptRegistered(type, "scrHandlerStartUp"))
                this.ClientScript.RegisterStartupScript(type, "scrHandlerStartUp", GetStartUpScript(), true);
        }

        private string GetStartUpScript()
        {
            return "try{{var handler = new FileHandler();handler.init();}}catch(e){{document.getElementById('divNotLoaded').style.display = '';}}";
        }
        
    }
}