Error while downloading a spreadsheet with Korean name (asp.net/C#)

Hi,

I have a module for attachments. I am able to attach & download the file correctly when the file name is in english. However when the file name is in korean, for some cases (no specific patterns), I am not able to download the attached file. I will get the error message as 'unknown File Type'. When I debug, the file path & name are correct but on the screen, I see the (.xls) is changed to (__xls) and hence the file format is not recognized.

The attachment & download code are prety simple. For attachement I use:

string relativePath = sb.ToString();
if (!Directory.Exists(Server.MapPath("") + relativePath))
{
Directory.CreateDirectory(Server.MapPath("") + relativePath);
}
objAttachment.Storename = DateTime.Now.Ticks + Regex.Replace(objAttachment.Filename, @"\s", "");

and for downloading, I use

context.Response.Clear();
context.Response.ClearContent();
context.Response.ClearHeaders();
context.Response.ContentType = "application/octet-stream";
context.Response.AppendHeader("Content-Disposition", "attachment;filename=" + fileName);
string strcompletePath = context.Server.MapPath("").Substring(0,(context.Server.MapPath("").Length -9)) + fileName;
context.Response.TransmitFile(strcompletePath);
context.Response.End();

I just renamed my english excel file with korean name as - and I was able to resproduce the error.

Thanks in advance.

Re: Error while downloading a spreadsheet with Korean name (asp.net/C#)

What's case if you download other types of file?

Try this: context.Response.AppendHeader("Content-Disposition", "attachment;filename=" + " .xls");

Maybe you need to consider set the Culture and UI Culture:

http://msdn.microsoft.com/en-us/library/bz9tc508.aspx