C#

public string Receive(Socket client)
{
    int len;
    byte[] data = new byte[1024];
    StringBuilder sb = new StringBuilder();
    while ((len = client.Receive(data)) == data.Length)
    {
        sb.Append(Encoding.Unicode.GetString(data).Substring(0, len));
    }
    sb.Append(Encoding.Unicode.GetString(data).Substring(0, len));
 
    return sb.ToString();
}
 
public void Send(Socket client, string prompt)
{
    client.Send(Encoding.Unicode.GetBytes(prompt));
}

public string Receive()
{
    int len;
    byte[] data = new byte[1024];
    StringBuilder sb = new StringBuilder();
    while ((len = client.Receive(data)) == data.Length)
    {
        sb.Append(Encoding.Unicode.GetString(data).Substring(0, len));
    }
    sb.Append(Encoding.Unicode.GetString(data).Substring(0, len));
 
    return sb.ToString();
}
 
public void Send(string prompt)
{
    client.Send(Encoding.Unicode.GetBytes(prompt));
}

string command = myServer.Receive(client); // Unicode  

// Console.WriteLine(command);  

string[] cmd = command.Split(' ');    
 
if (cmd.Length == 1)  
{  
 
    if (cmd[0] == "cd")  
 
    {  
        message = myServer.CurrentPath;  
 
        myServer.Send(client, message);  
    }    
 
    // here others "else if" united by the property (cmd.Length == 1)  

  
    else 
    {  
        message = "Command not found";  
   
 
        myServer.Send(client, message);  
    }
}  

public static T MyMethod<T>(this string Myxml)
{
  XmlDocument Mydocument = new XmlDocument();
  using (XmlTextReader XmlTr = new XmlTextReader(new StringReader(Myxml)))
  {
    Mydocument.Load(XmlTr);
  }
  // How do I return the result ?
  return ???
}