how display the output in textbox from the shellStream ?

See more:

C#

VB

ASP.NET

I have developer a web application in asp.net .I use ssh.net to establish a connection between my application and the Cisco devices. i use the below code:

to connect

var ip = DropDownList2.SelectedItem.Text;
var user = txtuser.Text;
var passw = txtpass.Text;
var connInfo = new Renci.SshNet.PasswordConnectionInfo(ip, 22, user, passw);
var sshClient = new Renci.SshNet.SshClient(connInfo);
try
{
    sshClient.Connect();

to run command i use 2 way:

2.1.

var cmd = sshClient.RunCommand("show user");
Label1.Text = cmd.Result;

its work fine withe router and switch but not working with firewall for that i try to use shellStream :
2.2.

var ss = this.shellStream;
sshClient.Connect();
this.shellStream = sshClient.CreateShellStream("dumb", 80, 24, 800, 600, 1024);

Console.WriteLine(SendCommand("enable", ss));

Console.WriteLine(SendCommand(passw, ss));

Console.WriteLine(SendCommand("show looging", ss));

i can send multiple command to divice but my probbleme is how to display the result of this command from the shellStream. i try some thing like that but is not working

string reslt = Console.ReadLine();
Label1.Text = Reslt;

i try to mixed this 2 way like this

this.shellStream = sshClient.CreateShellStream("dumb", 80, 24, 800, 600, 1024);

Console.WriteLine(SendCommand("enable", ss));

Console.WriteLine(SendCommand(passw, ss));

Renci.SshNet.SshCommand cmd;

cmd = sshClient.RunCommand("show logging");

txtenablepass.Text = cmd.Result;

but is not working and i have this Exception

Additional information: Failed to open a channel after 10 attempts.

my question is how display the output in textbox from the shellStream ?