[medadam]

لديك الحل بالسورس مع القليل من التركيز
تفضل 

كود :

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;


namespace WindowsFormsApplication2
{
  public partial class Form1 : Form
  {
      public Form1()
      {
          InitializeComponent();
      }

      private void Button1_Click(object sender, EventArgs e)
      {
          openFileDialog1.ShowDialog();
          string text = System.IO.File.ReadAllText(openFileDialog1.FileName);

          string line = File.ReadLines(openFileDialog1.FileName).Skip(3).FirstOrDefault() + Environment.NewLine + File.ReadLines(openFileDialog1.FileName).Skip(5).FirstOrDefault();


          TextBox1.Text = line;




      }
  }
}