在.NET中将流（未知长度）转换为字节数组的最佳方法？

发布于 2024-09-06 12:11:19 字数 584 浏览 8 评论 0原文

我有以下代码来从流（在本例中是从命名管道）读取数据并将数据读取到字节数组中：

// NPSS is an instance of NamedPipeServerStream

int BytesRead;
byte[] StreamBuffer = new byte[BUFFER_SIZE]; // size defined elsewhere (less than total possible message size, though)
MemoryStream MessageStream = new MemoryStream();

do
{
    BytesRead = NPSS.Read(StreamBuffer, 0, StreamBuffer.Length);
    MessageStream.Write(StreamBuffer, 0, BytesRead);
} while (!NPSS.IsMessageComplete);

byte[] Message = MessageStream.ToArray(); // final data

您能否看一下并让我知道是否可以更有效或更整洁地完成此操作？使用 MemoryStream 看起来有点混乱。谢谢！

原文

I have the following code to read data from a Stream (in this case, from a named pipe) and into a byte array:

// NPSS is an instance of NamedPipeServerStream

int BytesRead;
byte[] StreamBuffer = new byte[BUFFER_SIZE]; // size defined elsewhere (less than total possible message size, though)
MemoryStream MessageStream = new MemoryStream();

do
{
    BytesRead = NPSS.Read(StreamBuffer, 0, StreamBuffer.Length);
    MessageStream.Write(StreamBuffer, 0, BytesRead);
} while (!NPSS.IsMessageComplete);

byte[] Message = MessageStream.ToArray(); // final data

Could you please take a look and let me know if it can be done more efficiently or neatly? Seems a bit messy as it is, using a MemoryStream. Thanks!

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木有鱼丸 2024-09-13 12:11:19

无耻地复制了 Jon Skeet 的文章。

public static byte[] ReadFully (Stream stream)
{
   byte[] buffer = new byte[32768];
   using (MemoryStream ms = new MemoryStream())
   {
       while (true)
       {
           int read = stream.Read (buffer, 0, buffer.Length);
           if (read <= 0)
               return ms.ToArray();
           ms.Write (buffer, 0, read);
       }
   }
}

Shamelessly copied from Jon Skeet's article.

public static byte[] ReadFully (Stream stream)
{
   byte[] buffer = new byte[32768];
   using (MemoryStream ms = new MemoryStream())
   {
       while (true)
       {
           int read = stream.Read (buffer, 0, buffer.Length);
           if (read <= 0)
               return ms.ToArray();
           ms.Write (buffer, 0, read);
       }
   }
}

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那些过往 2024-09-13 12:11:19

int read = stream.Read (buffer, 0, buffer.Length);

如果没有可用数据，该行将永远阻塞。 Read 是一个阻塞函数，它将阻塞线程直到读取至少一个字节，但如果没有数据，它将永远阻塞。

int read = stream.Read (buffer, 0, buffer.Length);

This line will block forever if there is no data Available. Read is a blocking function and it will block the thread until it reads at least one byte but if there is no data then it will block forever.

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