C# 通过套接字接收原始十六进制并转换为字符串

我有以下问题，我试图从TCP/IP套接字接收原始十六进制值，并将其写入txt文件，只是在将原始十六进制数据转换为UTF-8字符串时遇到一些问题。我使用以下方法：

TcpClient client = new TcpClient("192.168.200.91", 2101);
NetworkStream netStream = client.GetStream();
byte[] bytes = new byte[client.ReceiveBufferSize];
netStream.Read(bytes, 0, (int)client.ReceiveBufferSize);

string returndata = Encoding.UTF8.GetString(bytes);

using (var writer = new StreamWriter(@"C:\Users\ -\Documents\test.txt", false, Encoding.UTF8))
{
    writer.WriteLine(returndata);
}

这将返回：

*ý%ˆ‡…ÿ338; 7ºeb%ý

如何成功读取原始十六进制数据并将其转换为可读字符串？

使用位转换器：

TcpClient client = new TcpClient("192.168.200.91", 2101);
NetworkStream netStream = client.GetStream();
byte[] bytes = new byte[client.ReceiveBufferSize];
int bytesRead = netStream.Read(bytes, 0, (int)client.ReceiveBufferSize);

string returndata = BitConverter.ToString(bytes, 0, bytesRead).Replace("-", "")

using (var writer = new StreamWriter(@"C:\Users\ -\Documents\test.txt", false, Encoding.UTF8))
{
    writer.WriteLine(returndata);
}

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少校，谢谢，你知道所有的0来自哪里吗？是的，你正在读取缓冲区大小。我会更新我的答案。请稍等。@ErwinVorenhout应该修复它，以便它现在只使用从流读取的字节。2AFEFFD25010000000000018E00000000EEA878500FF00000A000000000008C37BA658F0042000027ED这就是诀窍，谢谢老兄！