How to download a file from handler in asp.net

Question

In web method 

 

I am getting data in datatable and save in local path as excel file from there i want call handler and file want to download, while debugging  everything is fine but file not downloading

 

[System.Web.Services.WebMethod]

public static void SaveME_Onlinedetails(string[] CartValues)

{

 

Objdt = OBJBLL.BLLLOADGRID(objboNova);

string strname = "ManualEntry";

ExcelFile ef = new ExcelFile();

ExcelWorksheet ws = ef.Worksheets.Add("Summary");

string filepath = "E:\\BackUp\\Hemachandraprabhu_18112016\\Novartis\\Novartis\\ManualEntry\\ManualEntry " + strname + ".XLS";

FileStream fs = File.Create(filepath);

ws.InsertDataTable(Objdt, "A1", true);

ef.SaveXls(fs);

 WebClient client = new WebClient();

client.DownloadFile("http://localhost:58294/Upload.ashx", "ManualEntry"); 

} 

 

handler upload.ashx

 

[System.Web.Services.WebMethod(EnableSession = true)]

public void ProcessRequest(HttpContext context)

{

try

{

HttpPostedFile postedFile = context.Request.Files["Filedata"];

string fileName = "ManualEntry.XLS";

string savepath = "";

string tempPath = "";

tempPath = System.Configuration.ConfigurationManager.AppSettings["ManualExcel"];

savepath = context.Server.MapPath(tempPath);

context.Response.ContentType = "application/ms-excel";

context.Response.AddHeader("Content-Disposition", "attachment; filename=" + "ManualEntry");

context.Response.WriteFile(savepath + fileName);

HttpContext.Current.ApplicationInstance.CompleteRequest();

 

}

catch (Exception ex)

{

throw ex;

}

}

 

 

Please help me