StreamWriter正在写回车符吗？

Question

I have a very simple console application that creates a text file. Below is a recap of the code:

StreamWriter writer = File.CreateText("c:\\temp.txt");
foreach (blah...)
{
  writer.Write(body.ToString() + "\n");
  writer.Flush();
}
writer.Close();

The client is claiming there are carriage returns at the end of each line. Where are these carriage returns coming from?

Update: After opening in VS binary editor and Notepad++, there were no occurrences of 0d 0a . I'm going to go back to the client.

Answer 1

Open the file in the Visual Studio binary editor (File.Open.File, click down-arrow on Open button, choose Open With... and pick Binary Editor), and look for 0D bytes. If none are present, then either:

• your client can't tell the the difference between a line feed and a carriage return,

• your transmission method is modifying the file en-route. Is there any FTP binary/ascii mismatch going on?

If there are 0D bytes, then they are present in your body variable.

Answer 2

I tested your code.

alt text http://img830.imageshack.us/img830/5443/18414385.png

The code you posted does not have any carriage returns ( 0D ) only new lines ( 0A ). Something else is creating the carriage returns or the client does not know what a carriage return really is.

Answer 3

The "\\n" at the end of each write call

EDIT: I know this is a new line, not a carriage return but I bet any money the client is getting confused between the two and it's actually this that is causing the problem

Answer 4

In your code you put a line feed (\\n).

Your customer is talking about a carriage return (\\r). Maybe your customer is taking a line feed per a carriage return ?

Answer 5

Does the client distinguish between a CR and LF? Is the flush() necessary? Are you overloading the buffer if you don't flush?

Unless you have a massive amount of text you might find more use out of creating a StringBuilder to format the text exactly as you want it with \\n, \\r, \\t or whatever and then pumping that directly into a StreamWriter.

Answer 6

如果每个body字符串的第一个字符为'\\ r'，它将解释您所看到的内容。

Answer 7

Have you checked whether body is also ending with characters you don't want printed? This is the other potential problem source.