Program control D-Link DGS-1510-52X sshClient Renci.SshNet

[laaaaiiit]

Please tell me if it is possible to execute commands sent from C#, let's say by: (of course there may be another solution Renci.SshNet)

`RichTextOut.Document.Blocks.Clear();

var _username = Login.Text.Trim();
var _password = Password.Password.Trim();
var _host = "10.50.50.10";
var _port = 22;

var methods = new List
{
new PasswordAuthenticationMethod(_username, _password),
};

var connectionInfo = new ConnectionInfo(_host, _port, _username, methods.ToArray());

var client = new SshClient(connectionInfo);

client.ConnectionInfo.Timeout = TimeSpan.FromSeconds(30);
client.Connect();

SshCommand runCC = client.CreateCommand("terminal length 0\r\nsh run\r\nexit\r\n");
runCC.CommandTimeout = TimeSpan.FromSeconds(5);
var a = runCC.Execute();
RichTextOut.AppendText(a);
runCC.Dispose();
client.Disconnect();`

This command was supposed to output the entire running-config and exit the ssh connection, but it does not output anything at all.

var a = runCC.Execute(); ->
'Renci.SshNet.Common.SshOperationTimeoutException: "Command
terminal length 0
sh run
exit
has timed out."'
After the connection is completed, Renci.SshNet thinks it is connected, but D-Link does not display in the web interface that it is connected.

I tried to change Encryptions, HmacAlhorithms, but it didn't do anything, it connects with PUTTY and is shown in the web interface, I set the encryption settings similarly, it didn't help.

On cisco hardware, such code can work without problems.

I just need to send commands, not create a real Async connection with D-Link, so please don't suggest that. Thank you in advance for your help!

[laaaaiiit]

var listLineRunConfig = new List();
var client = new SshClient("10.50.50.10", 22, Dispatcher.Invoke(() => Login.Text), Dispatcher.Invoke(() => Password.Password));
client.Connect();
var shell = client.CreateShellStream("terminal", 80, 24, 800, 600, 1024);

        var cmd = "terminal length 0\nsh run\n";
        shell.WriteLine(cmd);
        
        while (true)
        {
            var line = shell.ReadLine();
            Console.WriteLine(line);
            listLineRunConfig.Add(line);
            if (line.Contains("end")) break;
        }
        client.Disconnect();