An excel File can not be generated in ASP.Net

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Hello Friends ...

i m creating an excel file using Microsoft.Office.Interop.Excel in ASP.NET. While at Developing time, An Excel File was generating and downloading properly. But After hosting the project on IIS, I am getting following error

Access to the path 'C:\Mori-2014\Report\DailyReport.xls' is denied.

C:\Mori-2014\Report\DailyReport.xls is path where the excel file is generating. and from there data is converted into binary format and generating downloadable file.

C#

string FilePath="C:\Mori-2014\Report\DailyReport.xls";
byte[] bytes = System.IO.File.ReadAllBytes(FilePath);
Response.Buffer = true;
Response.Clear();
Response.ClearHeaders();
Response.ContentType = "application/vnd.ms-excel";
Response.CacheControl = "public";
Response.AddHeader("Pragma", "public");
Response.AddHeader("Expires", "0");
Response.AddHeader("Cache-Control", "must-revalidate, post-check=0, pre-check=0");
Response.AddHeader("Content-Description", "Excel File Download");
Response.AddHeader("Content-Disposition", "attachment; filename=\"" + filename + "\"");
Response.BinaryWrite(bytes);

Response.Flush();
Response.End();

Please Help me.

Posted 15-Dec-14 22:24pm

TAUSEEF KALDANE

Updated 15-Dec-14 22:29pm

v2

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Sinisa Hajnal 16-Dec-14 5:19am

Does it exist on your server? In general it is very bad design to use fixed (hard-coded) setting for anything. Use database setting, config file or whatever to have the ability to change the target folder without recompiling the code.

Sinisa Hajnal 16-Dec-14 5:23am

Does it exist on your server?

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KaushalJB · Answer 1 · 2014-12-15T23:13:00

First of all if you are creating/downloading any file, don't use direct C: drive path it would always give you Access denied after hosting in IIS.

So the better option is use :

C#

string FilePath = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);

Path on drive would be like "C:\Users\user_name\AppData\Roaming".
You can create you folder in this path and access as per you projects name.

Store/Download/Manipulate your File(Excel file) in this location which is user specific.