c# - MVC3 を使用して Excel でデータをダウンロードする

Question

Asp Dot Net Mvc3 を使用しています。Excel ファイルをダウンロードしたいのですが、以下は私のコントローラーです。

public ActionResult DownloadTRUnutilizedOwnershipInvoke(string strGeo, string strVertical, int intMonth, int intFlag,string strType)
{
     TRUnutilizedOwnershipModel objTRUnutilizedOwnershipModel = new TRUnutilizedOwnershipModel();
     objTRUnutilizedOwnershipModel = objTRUnutilizedOwnershipModel.GetUnutilizedOwnershipExcelEntities(strGeo, strVertical, intMonth, intFlag,strType);
     objTRUnutilizedOwnershipModel.ExportUnutilizedOwnership("UnutilizedOwnership", objTRUnutilizedOwnershipModel.lstunutilizedownershipExcelentities);                                           
}

以下は私のモデルです、

       public void ExportUnutilizedOwnership<T>(string fileName, List<T> lstdata)
    {
        try
        {
            Table tableData = new Table();                                               HttpContext.Current.Response.Clear();                
      HttpContext.Current.Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", fileName + ".xls"));.
            HttpContext.Current.Response.ContentType = "application/ms-excel";= "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";                using (StringWriter sw = new StringWriter())
            {
                                    using (HtmlTextWriter htw = new HtmlTextWriter(sw))
                {
                    if (typeof(T) == typeof(UnutilizedOwnershipExcelEntities))
                    {
                        List<UnutilizedOwnershipExcelEntities> lstNewdata = (List<UnutilizedOwnershipExcelEntities>)(object)lstdata;
                        tableData = TableUnutilizedOwnershipExcelData(lstNewdata);
                    }                                                                                            tableData.RenderControl(htw);                                       HttpContext.Current.Response.Write(sw.ToString());
                    HttpContext.Current.Response.End();
                }
            }
        }
        catch (Exception ex)
        {
            throw ex;
        }
    }

          public Table TableUnutilizedOwnershipExcelData(List<UnutilizedOwnershipExcelEntities> lstUnutilizedOwnershipExcelEntities)
    {
        try
        {
            Table tableData = new Table();
            TableRow rowHeader = new TableRow();
            TableHeaderCell hCurrentOwnership = new TableHeaderCell();
            TableHeaderCell hCount = new TableHeaderCell();

            hCurrentOwnership.Text = "CurrentOwnership";
            hCount.Text = "Count";

            rowHeader.Cells.Add(hCurrentOwnership);
            rowHeader.Cells.Add(hCount);

            rowHeader.BackColor = Color.Gray;
            ApplyStyle(rowHeader);
            tableData.Rows.Add(rowHeader);
            foreach (UnutilizedOwnershipExcelEntities excelEntity in lstUnutilizedOwnershipExcelEntities)
            {
                TableRow rowData = new TableRow();

                TableCell cellCurrentOwnership = new TableCell();
                TableCell cellCount = new TableCell();

                cellCurrentOwnership.Text = excelEntity.CurrentOwnership;
                cellCount.Text = Convert.ToString(excelEntity.cnt);

                rowData.Cells.Add(cellCurrentOwnership);
                rowData.Cells.Add(cellCount);

                tableData.Rows.Add(rowData);
                ApplyStyle(rowData);
            }
            return tableData;
        }
        catch (Exception ex)
        {
            throw ex;
        }
    }

    public void ApplyStyle(TableRow row)
    {
        try
        {
            row.BorderColor = Color.FromName("#CCCCCC");
            row.BorderWidth = Unit.Pixel(1);
            row.BorderStyle = BorderStyle.Solid;
        }
        catch (Exception ex)
        {
            throw ex;
        }
    }

Excel をダウンロードするためのポップアップ ウィンドウを取得できませんでした。