由网友(浅唱、初夏)分享简介：我希望能够得到产品，在C＃中的TCP网络数据流设置缓冲区的大小数据的长度从网络流读取之前。有一个 NetworkStream.Length 属性，但还没有实现，我不想分配一个规模巨大的缓冲区，因为它会占用太多的空间。只有这样，我虽然做这将是precede另一个讲的大小的数据传输，但是这似乎有点凌乱。什么是对我来说，去这...

我希望能够得到产品，在C＃中的TCP网络数据流设置缓冲区的大小数据的长度从网络流读取之前。有一个 NetworkStream.Length 属性，但还没有实现，我不想分配一个规模巨大的缓冲区，因为它会占用太多的空间。只有这样，我虽然做这将是precede另一个讲的大小的数据传输，但是这似乎有点凌乱。什么是对我来说，去这样做的最佳方式。

I would like to be able to get the length of the data available from a TCP network stream in C# to set the size of the buffer before reading from the network stream. There is a NetworkStream.Length property but it isn't implemented yet, and I don't want to allocate an enormous size for the buffer as it would take up too much space. The only way I though of doing it would be to precede the data transfer with another telling the size, but this seems a little messy. What would be the best way for me to go about doing this.

推荐答案

在访问的 流取值，你平时读写小块数据（例如，一个千字节左右），或者使用的方法类似的 CopyTo从 ，做适合你

When accessing Streams, you usually read and write data in small chunks (e.g. a kilobyte or so), or use a method like CopyTo that does that for you.

这是使用 CopyTo从为例流的内容复制到另一个流，并将其返回为字节[] 从方法，使用自动大小的缓冲区。

This is an example using CopyTo to copy the contents of a stream to another stream and return it as a byte[] from a method, using an automatically-sized buffer.

using (MemoryStream ms = new MemoryStream())
{
    networkStream.CopyTo(ms);
    return ms.ToArray();
}

这是code，在以同样的方式读取数据，但更多的人工，这可能是更好地为你一起工作，这取决于你在做什么的数据：

This is code that reads data in the same way, but more manually, which might be better for you to work with, depending on what you're doing with the data:

byte[] buffer = new byte[2048]; // read in chunks of 2KB
int bytesRead;
while((bytesRead = networkStream.Read(buffer, 0, buffer.Length)) > 0)
{
    //do something with data in buffer, up to the size indicated by bytesRead
}

（依据这些code段从Most从流读取数据），有效的方法。

(the basis for these code snippets came from Most efficient way of reading data from a stream)