字节[256]通过TCP限制为5个字符

我在TCP服务器\客户端遇到问题我在.NET 3.5(C#)中编写.

每当我使用下面的代码传输数据时,只有5个字符传输到服务器.如何修复我的代码,以便我传输超过5个字符？

TcpClient client = new TcpClient(connectto.ToString(), portto);
Stream s = client.GetStream();
StreamReader sr = new StreamReader(s);
StreamWriter sw = new StreamWriter(s);

Byte[] data = new Byte[256];
data = System.Text.Encoding.ASCII.GetBytes("auth:" + adminPASS.Text);

s.Write(data, 0, data.Length);

data = new Byte[256];

String responseData = String.Empty;

Int32 bytes = s.Read(data, 0, data.Length);
responseData = System.Text.Encoding.ASCII.GetString(data, 0, bytes);

服务器只获取传输的前5个字符.其余的都丢失了.