How to Write file in C#?

Question

 string attachment = "attachment; filename=Myfile.csv";
 HttpContext.Current.Response.Clear();
 HttpContext.Current.Response.ClearHeaders();
 HttpContext.Current.Response.ClearContent();
 HttpContext.Current.Response.AddHeader("content-disposition", attachment);
 HttpContext.Current.Response.ContentType = "text/csv";
 HttpContext.Current.Response.AddHeader("Pragma", "public");

// My logic goes here to write file.

// Now I want to copy above file to another file.

 string filepath = Server.MapPath("~/ExportedFiles/") +"Newfile.csv";
 var ExcelFile = File.Create(filepath);
 ExcelFile.Close();
 HttpContext.Current.Response.TransmitFile(filepath);
 HttpContext.Current.Response.Flush();

The above code is not working, please suggest me. Thanks.

Possible duplicate of [Easiest way to read from and write to files](http://stackoverflow.com/questions/7569904/easiest-way-to-read-from-and-write-to-files) — Keale, Oct 15 '15 at 05:57
Please define "not working" - compile error, runtime error, unexpected output? Plus any details about that error. — Hans Keﬆing, Oct 15 '15 at 06:25
You *should* be getting an error, you sure you're not swallowing the exception somewhere? — Lasse V. Karlsen, Oct 15 '15 at 07:11

score 1 · Answer 1 · answered Oct 15 '15 at 06:57

you need to create a virtual directory on your IIS and share that virtual directory directory. Your csv should reside in your virtual directory shared location. here is referenced article: http://www.codeproject.com/Tips/502741/A-solution-to-problem-Response-TransmitFile

Jojo · Answer 2 · 2017-03-16T09:01:43.397

0

use code bellow rather than: var ExcelFile = File.Create(filepath); WriteAllLines instruction in C# use to create file or change content file

File.WriteAllLines(filepath, data);

edited Mar 16 '17 at 09:01

answered Mar 16 '17 at 08:29

Jojo

1
1

Please add some description rather than just posting the answer, it will help others to avoid the problems in the future. – VPK Mar 16 '17 at 08:46

How to Write file in C#?

2 Answers2