// 结束写入
static void EndWrite(IAsyncResult asyncResult)
{
FileWaiter fw = (FileWaiter)asyncResult.AsyncState;
fw.fs.EndWrite(asyncResult);
fw.fs.Close();
fw.isFinish = true;
}
// 异步写入文件
public static FileWaiter WriteFileAsync(string path, byte[] data)
{
// 保证目录存在
Directory.CreateDirectory(Path.GetDirectoryName(path));
// 写入文件
FileStream fs = new FileStream(path, FileMode.Create, FileAccess.Write);
FileWaiter fw = new FileWaiter(fs);
fs.BeginWrite(data, 0, data.Length, new AsyncCallback(EndWrite), fw);
return(fw);
}
