问题描述
在大多数的Unix和POSIX符合操作系统与O_APPEND指示写入操作系统执行的open（）操作系统调用的是原子的追加和写入操作。通过这种行为，本地文件系统，当你做一写，你知道它获得附加到文件的末尾。
Under most Unixes and Posix conforming operating systems performing an open() operating system call with the O_APPEND indicates to the OS that writes are to be atomic append and write operations. With this behavior,for local filesystems when you do a write, you know it get appended to the end of the file.
在Windows操作系统中通过传递 FILE_APPEND_DATA 在适当的参数在Win32的CreateFile（）系统调用。
The Windows operating systems support the same functionality by passing FILE_APPEND_DATA in the appropriate parameter to the Win32 CreateFile() system call.
引用
http://www.google.com/search?q=msdn+createfile
or: http://msdn.microsoft.com/en-us/library/aa363858(VS.85).aspx
http://www.google.com/search?q=msdn+IoCreateFileSpecifyDeviceObjectHint
or: http://www.google.com/search?q=msdn+IoCreateFileSpecifyDeviceObjectHint
我的问题是这样的，我不能确定如何使用.Net框架下得到C＃这种行为
图书馆，有没有办法使用.NET框架来获得这样的行为？
我不相信使用FileMode.Append给出了这样的行为，顺便说一句。
My problem is this, I cannot determine how to get this behavior under C# using the Net FrameworkLibraries, is there a way to get such behavior using the Net Framework?I do not believe using FileMode.Append gives such behavior, by the way.
推荐答案
使用的FileStream 构造函数的重载之一：
Use one of the overloads of the FileStream constructor:
new FileStream(FileName, FileMode.Open, FileSystemRights.AppendData,
FileShare.Write, 4096, FileOptions.None)
FileSystemRights.AppendData 与 FILE_APPEND_DATA对应
的FileStream似乎坚持缓冲，所以一定要确保缓冲区足够大的每个
写和呼叫同花顺（）每次写操作之后。
FileStream seems to insist on buffering, so make sure the buffer is large enough for eachwrite and call Flush() after each write.
微小例如：
private void button1_Click(object sender, EventArgs e) {
Thread t1 = new Thread(DoIt);
Thread t2 = new Thread(DoIt);
t1.Start("a");
t2.Start("b");
Thread.Sleep(2000);
Environment.Exit(0);
}
private void DoIt(object p) {
using (FileStream fs = new FileStream(FileName, FileMode.Open, FileSystemRights.AppendData,
FileShare.Write, 4096, FileOptions.None)) {
using (StreamWriter writer = new StreamWriter(fs)) {
writer.AutoFlush = true;
for (int i = 0; i < 20; ++i)
writer.WriteLine("{0}: {1:D3} {2:o} hello", p, i, DateTime.Now);
}
}
}
这篇关于我该怎么办原子写入/追加在C＃中，或者我如何才能打开的文件与FILE_APPEND_DATA标志？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！