我原本以为在 StreamWriter 对象中调用 Flush()
时会将内容写入基础流,但实际上我的代码并不是这样。
它没有向文件中写入任何内容。你有什么想法是我做错了什么吗?
public FileResult DownloadEntries(int id)
{
Competition competition = dataService.GetCompetition(id);
IQueryable<CompetitionEntry> entries = dataService.GetAllCompetitionEntries().Where(e => e.CompetitionId == competition.CompetitionId);
MemoryStream stream = new MemoryStream();
StreamWriter csvWriter = new StreamWriter(stream, Encoding.UTF8);
csvWriter.WriteLine("First name,Second name,E-mail address,Preferred contact number,UserId\r\n");
foreach (CompetitionEntry entry in entries)
{
csvWriter.WriteLine(String.Format("{0},{1},{2},{3},{4}",
entry.User.FirstName,
entry.User.LastName,
entry.User.Email,
entry.User.PreferredContactNumber,
entry.User.Id));
}
csvWriter.Flush();
return File(stream, "text/plain", "CompetitionEntries.csv");
}