Exportar para Execel

Bom dia, preciso de um help, estou tentando exportar .xls em c#, engraçado que via localhost(Visual Studio) exportar, porém quando publico no servidor não exportar, segue o script:

c#

public static bool CreateExcelDocumentAsStream(DataSet ds, string filename, System.Web.HttpResponse Response)
{
try
{
System.IO.MemoryStream stream = new System.IO.MemoryStream();
using (SpreadsheetDocument document = SpreadsheetDocument.Create(stream, SpreadsheetDocumentType.Workbook, true))
{

WriteExcelFile(ds, document);
}

stream.Flush();
stream.Position = 0;

Response.ClearHeaders();
Response.ClearContent();
Response.Clear();
Response.Buffer = true;
Response.Charset = "";

// NOTE: If you get an "HttpCacheability does not exist" error on the following line, make sure you have
// manually added System.Web to this project's References.

Response.ContentEncoding = System.Text.Encoding.UTF8;
Response.Cache.SetCacheability(System.Web.HttpCacheability.NoCache);
Response.AddHeader("content-disposition", "attachment; filename=" + filename);
Response.AddHeader("Content-Length", filename.Length.ToString());
Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";

byte[] data1 = new byte[stream.Length];
stream.Read(data1, 0, data1.Length);
//stream.Close();

//Response.WriteFile(filename);

Response.BinaryWrite(data1);
stream.Close();
Response.Flush();
Response.Close();
Response.End();

return true;
}

catch (Exception ex)
{

Trace.WriteLine("Failed, exception thrown: " + ex.Message);
return false;
}
}

  

	 

	 

	Alimenta form em JS

	 

	**JS**

	 

  

function postAndRedirect(url, postData) {

var postFormStr = '<form method="POST" action=' + url + ' >\n';

for (var key in postData) {

if (postData.hasOwnProperty(key)) {

postFormStr += '<input type="hidden" name=' + key + ' value=' + postData[key] + '></input>';
}
}

postFormStr += '</form>';

var formElement = $(postFormStr);

$('body').append(formElement);
$(formElement).submit();
}

  

	Carrega o Object porem não alimenta o form, alguém pode me ajudar? Obrigado!