C# application/octet-stream event

[mylog]

Hi,

I am facing a problem regarding the application/octet-stream.I have written a code that downloads a file stored in the App_Data folder to C:/files/ folder and now what problem I am facing is that when I download the file and open it, it opens from the temporary files folder rather I need it from where I have downloaded the file so that when I click the save button of the opened file it will be saved in the current location. Here's the code that I have written.

string str = Server.MapPath("App_Data/" + ListBox1.SelectedItem);
FileStream fs = new FileStream(str, FileMode.Open, FileAccess.Read);
byte[] fileContents = new byte[fs.Length];
fs.Read(fileContents, 0, fileContents.Length);
fs.Close();
FileStream fw = new FileStream("C:/files/" + ListBox1.SelectedItem, FileMode.Create, FileAccess.Write);
fw.Write(fileContents, 0, fileContents.Length);
fw.Close();

Response.ContentType = "application/octet-stream";
Response.AddHeader("Content-Disposition", "attachment; fileName=\"" + ListBox1.SelectedItem + "\"");
Response.Flush();
//Response.WriteFile("C:/files/" + ListBox1.SelectedItem);
Response.BinaryWrite(fileContents);
Response.Flush();
Response.End();
lblstatus.Text = "File Downloaded";

Anybody have any idea on how this could be done. Is there a way to specify the path as from where the file should be loaded>
Or can the event from any other application like notepad be handled from C#

Looking forward for reply soon.