C#

private void InitializeInputPanel()
  {
      InputPanel.Width = PnlWidth;
      InputPanel.Height = Pnlheight;
      InputPanel.BackColor = pnlbackgroundcolor;
      InputPanel.BorderStyle = Pnlborderstyle;
      InputPanel.Font = Pnlfont;
      InputPanel.Dock = Pnldockstyle;
      InputPanel.Location = PnlPoint;

 InpbBeskrivelseTxtBox inpb = new InpbBeskrivelseTxtBox();
      inpb.AddMe(InputPanel);

  }

class InpbBeskrivelseTxtBox
{
    TextBox BeskrivelseTextBox =new TextBox();
    #region Fields
    private int txtwidth;
    private int txtheight;
    private Color txtbackgroundcolor;
    private BorderStyle txtborderstyle;
    private Font txtfont;
    private DockStyle txtdockstyle;
    private Point txtpoint;
    private string txtText;
    private HorizontalAlignment txtAlign;
    #endregion
    #region Constructors
    public void InpbBeskrivelseTextbox()
    {
        txtwidth = 321;
        txtheight = 21;
        txtbackgroundcolor = Color.Red;
        txtborderstyle = BorderStyle.Fixed3D;
        txtfont=new Font("Century",8);
        txtdockstyle = DockStyle.Top;
        txtpoint = new Point(0, 0);
        txtText = "Beskrivelse";
        TxtAlign = HorizontalAlignment.Center;

    }
    #endregion
    #region properties
    public int Txtwidth { get => txtwidth; set => txtwidth = value; }
    public int Txtheight { get => txtheight; set => txtheight = value; }
    public Color Txtbackgroundcolor { get => txtbackgroundcolor; set => txtbackgroundcolor = value; }
    public BorderStyle Txtborderstyle { get => txtborderstyle; set => txtborderstyle = value; }
    public Font Txtfont { get => txtfont; set => txtfont = value; }
    public DockStyle Txtdockstyle { get => txtdockstyle; set => txtdockstyle = value; }
    public Point Txtpoint { get => txtpoint; set => txtpoint = value; }
    public string TxtText { get => txtText; set => txtText = value; }
    public HorizontalAlignment TxtAlign { get => txtAlign; set => txtAlign = value; }
    #endregion
    #region Private Methods
    private void InitializebeskrivelsesTextBox()
    {
        BeskrivelseTextBox.Width = Txtwidth;
        BeskrivelseTextBox.Height = Txtheight;
        BeskrivelseTextBox.BackColor = Txtbackgroundcolor;
        BeskrivelseTextBox.BorderStyle = Txtborderstyle;
        BeskrivelseTextBox.Font = Txtfont;
        BeskrivelseTextBox.Dock = Txtdockstyle;
        BeskrivelseTextBox.Location = Txtpoint;
        BeskrivelseTextBox.Text = TxtText;
        BeskrivelseTextBox.TextAlign = TxtAlign;
        BeskrivelseTextBox.BringToFront();
    }
    #endregion
    #region Public Methods
    public void AddMe(Control control)
    {

        InitializebeskrivelsesTextBox();
        control.Controls.Add(BeskrivelseTextBox);
    }
    #endregion
}

I want to read the text file on a specific line and perform a task according to the information.

example: I have a string with the value ON, in case the program will read the text file online, if you have the information ON on line 4 performs a task, if OFF accomplishes another task can anyone help me?

<pre>  var webClient = new WebClient();
            var pageSC = webClient.DownloadString("http://en.wikipedia.org/w/api.php?format=xml&action=query&prop=extracts&titles=" + textBox1.Text + "&redirects=true");
            XmlDocument doc = new XmlDocument();
            doc.LoadXml(pageSC);

            var fnode = doc.GetElementsByTagName("extract")[0];
            try
            {
                string ss = fnode.InnerText;
                Regex regex = new Regex("\\<[^\\>]*\\>");
                string.Format("Before:{0}", ss);

                ss = regex.Replace(ss, string.Empty);
                string result = String.Format(ss);
                richTextBox2.Text = result;
            }
            catch
            {
                richTextBox2.Text = "error";
            }