Total newbie help needed. 2

[eraH]

Ok, I've never programmed before so please be gentle and type very slowly when replying

What I'm trying to do is connect to a Linux box and issue commands.

I've managed to connect to the Linux server when the "Connect" button is clicked. But how do I
1. Keep the connection open? If I click on the next tab in the form the connection closes.
2. I have to create the following variable every time.

SshExec exec = new SshExec(ip_textbox.Text, username_textbox.Text, password_textbox.Text);

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using Tamir.SharpSsh; 

namespace LMC
{
    public partial class MainForm : Form
    {
        public MainForm()
        {
            InitializeComponent();
        }
        
        private void connect_button_Click(object sender, EventArgs e)
        {
            //Connects to server using details entered by user under logon tab

            SshExec exec = new SshExec(ip_textbox.Text, username_textbox.Text, password_textbox.Text);
            exec.Connect();
            
            //If the connection is successful, it changes the connection status label
            connectionstatus_label.ForeColor = Color.Green;
            connectionstatus_label.Text = "Status: Connected";
        }

        private void ServerInfo_Tab_Click(object sender, EventArgs e)
        {
            //Runs a command on the server, just for testing purposes
            string command;
            command = "cat /etc/redhat-release";
            string output = exec.RunCommand(command);
            osrelease_textbox.Text = output;
        }
   
    }
}

Thank you in advance for any replies.

 

[chiph]

SshExec exec = new SshExec(ip_textbox.Text, username_textbox.Text, password_textbox.Text);
            exec.Connect();

The exec variable is local to your click event handler. When the handler ends, it goes away.

Define it at a higher scope level -- like in the class itself.

Chip H.


____________________________________________________________________
If you want to get the best response to a question, please read FAQ222-2244 first

 

[eraH]

How would I do that, the

exec.Connect();

part starts the actual connection. How would the program know when the user has entered the connection details?

I think I'm in over my head, I might just do a bit more research and try and figure this out.

Thanks for your help.

 

[JurkMonkey]

What chip is saying is:

Define your SshExec in the class and then use it inside your button click. Anything you define within a method (in your case connect_button_Click(obejct sender, EventArgs e) will only be available until the code inside that method has completed.

so

public partial class MainForm : Form
    {
        SshExec exec  = null;

        public MainForm()
        {
            InitializeComponent();
        }
        
        private void connect_button_Click(object sender, EventArgs e)
        {
            //Connects to server using details entered by user under logon tab

            exec = new SshExec(ip_textbox.Text, username_textbox.Text, password_textbox.Text);
            exec.Connect();
            
            //If the connection is successful, it changes the connection status label
            connectionstatus_label.ForeColor = Color.Green;
            connectionstatus_label.Text = "Status: Connected";
        }

        private void ServerInfo_Tab_Click(object sender, EventArgs e)
        {
            //Now you can run your commands on the exec object

            exec.SendCommand("or whatever the call is");



            //Runs a command on the server, just for testing purposes
            string command;
            command = "cat /etc/redhat-release";
            string output = exec.RunCommand(command);
            osrelease_textbox.Text = output;
        }
   
    }

I suggest attaching to the FormClosing event and calling exec.Close(); to ensure the connection is closed properly when you quit the application.

http://www.ubuntu.com/

 

[eraH]

Cool, thanks a lot to both of you.