Form disappearing

[User 2387889]

Hi All Having some trouble trying to get a form to persist, rather than disappearing / not appearing when run. Probably something silly, command in the wrong location etc C#, Visual Studio. Code newbie, please be gentle.

using System;
using System.ComponentModel;
using System.Drawing;
using System.IO;
using System.Windows.Forms;

namespace TCPReader
{

public class frmConfiguration : System.Windows.Forms.Form
{
    private void frmConfiguration\_Load(object sender, System.EventArgs e)
    {
    }
    private System.Windows.Forms.Button btnok;
    private System.Windows.Forms.Button button2;
    private System.ComponentModel.IContainer components;
    private System.Windows.Forms.GroupBox groupBox1;
    private System.Windows.Forms.Label label1;
    private System.Windows.Forms.Label label2;
    public USBReader.readerqueue m\_queue;
    public USBReader.Socketclient m\_sclient;
    public System.Threading.Thread thread1;
    public System.Threading.Thread threadClient;
    private System.Windows.Forms.TextBox txtipaddres;
    private System.Windows.Forms.TextBox txtportno;
            
    private void btnok\_Click(object sender, System.EventArgs e)
    {
        try
        {
            bool flag = txtipaddres.Text != "" && txtportno.Text != "";
            if (!flag)
            {
                System.Windows.Forms.MessageBox.Show("Enter IP Address and Port No to Connet\\n to the Node", "Node Control", System.Windows.Forms.MessageBoxButtons.OK, System.Windows.Forms.MessageBoxIcon.Asterisk);
                Show();
            }
            else
            {
                System.IO.TextWriter textWriter = System.IO.File.CreateText(System.Windows.Forms.Application.StartupPath + "\\\\IPAddress.txt");
                textWriter.WriteLine(txtportno.Text + ";" + txtipaddres.Text);
                textWriter.Close();
                DialogResult = System.Windows.Forms.DialogResult.OK;
                Close();
            }
        }
        catch (System.Exception e1)
        {
        }
    }

    private void button2\_Click(object sender, System.EventArgs e)
    {
        DialogResult = System.Windows.Forms.DialogResult.Cancel;
        Close();
    }

    private void Configurati