File is not downloading in asp.net Mvc

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ASP.NET

MVC4

Hello,

I am implementing file downloading feature. every thing works fine but instead of downloading file is opening in browser. below is my code. i created a custom ActionResult and called it from controller. this Action Method is called from a anchor click event.

This is my ActionMethod

public ActionResult DownLoadSubmission(int NodeNo)
      {
          if (NodeNo > 0)
          {
              DataSet ds = DAL.GetDataSet("   select * from Wroks Where NodeNo="+ NodeNo);
              if (ds != null && ds.Tables.Count > 0 && ds.Tables[0] != null && ds.Tables[0].Rows.Count > 0)
              {
                 // DownLoadResult obj = new DownLoadResult(ds.Tables[0].Rows[0]["ActualFileName"].ToString(), ds.Tables[0].Rows[0]["ServerFileName"].ToString());

                  return new  DownLoadResult{FileDownLoadName= ds.Tables[0].Rows[0]["ActualFileName"].ToString(),FileServerName= ds.Tables[0].Rows[0]["ServerFileName"].ToString()};
              }
          }
          return new EmptyResult();
          //return Content("");
      }

This is custom ActionResult

public class DownLoadResult : ActionResult
{

    public string FileDownLoadName { get; set; }
    public string FileServerName { get; set; }
    public DownLoadResult()
    {

    }
    public DownLoadResult(string orgName, string serverName)
    {
        this.FileDownLoadName = orgName;
        this.FileServerName = serverName;
    }

    public override void ExecuteResult(ControllerContext context)
    {
        string Path = "", PhysicalPath = "";

        Path = context.HttpContext.Request.ApplicationPath;
        PhysicalPath = context.HttpContext.Request.MapPath(Path);
        string strCompletePath = "";
        strCompletePath = PhysicalPath + "Submissions\\" + FileServerName;
        context.HttpContext.Response.AddHeader("content=disposition", "attachment;filename=" + FileDownLoadName);
        context.HttpContext.Response.TransmitFile(strCompletePath);
    }
}

I am calling Controller ActionMethod from through following anchor click.

$("#tblWorkList").on("click", "a.download", function (e) {
    debugger
    e.preventDefault();
    var url="@Url.Action("DownLoadSubmission", "Home", new { NodeNo = "-11" })";
    url=url.replace("-11",$(this).attr("data-submissionid"))
    window.location.href = url;

});

I am unable to download file (file is opening in browser), Please help me..