Streamwriter 写的与 Console.WriteLine() 不同

Question

我有一个 streamwriter 将进程流中的数据写入日志文件。当我用 Console.WriteLine() 显示输出时，结果如下所示：

SW DATA = Sep 23, 2016 9:40:37 AM hudson.remoting.jnlp.Main$CuiListener status
SW DATA = INFO: Trying protocol: JNLP3-connect
SW DATA = Sep 23, 2016 9:40:38 AM hudson.remoting.jnlp.Main$CuiListener status
SW DATA = INFO: Server didn't accept the handshake: Unknown protocol:Protocol:JNLP3-connect
SW DATA = Sep 23, 2016 9:40:38 AM hudson.remoting.jnlp.Main$CuiListener status
SW DATA = INFO: Connecting to Machine:51136
SW DATA = Sep 23, 2016 9:40:38 AM hudson.remoting.jnlp.Main$CuiListener status
SW DATA = INFO: Trying protocol: JNLP2-connect
SW DATA = Sep 23, 2016 9:40:38 AM hudson.remoting.jnlp.Main$CuiListener status
SW DATA = INFO: Connected

但是当我打开文本文件时，它看起来像：

INFO: Connected
:38 AM hudson.remoting.jnlp.Main$CuiListener status
LP3-connect
6231dd with ID 
ad is recommended.

我的密码是：

    static void ShowOutput(string data)
    {
        if (data != null)
        {
            FileStream fileStream = new FileStream(@"c:\temp\LogFile.txt", FileMode.OpenOrCreate, FileAccess.Write);
            Console.WriteLine("SW DATA = " + data);
            using (StreamWriter w = new StreamWriter(fileStream))
            {
                w.WriteLine(data);
                w.Flush();
            }
            fileStream.Close();
        }
    }

看来作者只写了每一行的结尾。

数据来自与此类似的控制台进程：

http://www.codeproject.com/Articles/4665/Launching-a-process-and-displaying-its-standard-ou

我的问题是：

我怎样才能避免这种情况？

Answer 1

It looks like the writer only writes the end of every Line.

这是因为您每次都重新打开文件，覆盖了之前的内容。您需要在调用 ShowOutput 之间保持文件打开，或者以 Append 模式打开它。

文件中的混淆内容是因为它只覆盖了文件的开头（并没有截断它），所以如果你写的日志条目比前面的短，那么前面的结尾文本仍然存在。

Streamwriter 写的与 Console.WriteLine() 不同

Streamwriter writes different then Console.WriteLine()

c#

streamwriter