【探索发现】winform 网络传输时候封包与解包心得

private void button1_Click(object sender, EventArgs e)
{
byte[] package = Pack();
Unpack(package);
}

static int userlength = 20;
static int passlength = 20;
//打包
private byte[] Pack()
{
byte[] buffer = new byte[1024];
buffer[0] = 1;//类型
byte[] username = Encoding.UTF8.GetBytes("Sam");//有长度限制
byte[] userpass = Encoding.UTF8.GetBytes("Password");//有长度限制

Array.Copy(username, 0, buffer, 1, username.Length);
Array.Copy(userpass, 0, buffer, 1 + userlength, userpass.Length);
return buffer;
}
//解包
private void Unpack(byte[] buffer)
{
int type = buffer[0];
byte[] username = new byte[userlength];
byte[] userpass = new byte[passlength];

Array.Copy(buffer, 1, username, 0, userlength);
Array.Copy(buffer, 1 + userlength, userpass, 0, passlength);
string strName = Encoding.UTF8.GetString(username).TrimEnd('\0');
string strPass = Encoding.UTF8.GetString(userpass).TrimEnd('\0');
string strInfo = string.Format("类型: {0} 用户名:{1} 密码:{2}", type.ToString(), strName, strPass);
MessageBox.Show(strInfo, "解包完成");
}