title: how to display data of text file in list view
body: <p>i want to display data from </p>
  
  <blockquote>
    <p>text file</p>
  </blockquote>
  
  <p>in list view and in tree view. root will be file name, but i dont know how to do it, the problem is with displaying text file data in list view, i don't know anything about that. 
  text file data is very simple
  it is just a square matrix of double values like:</p>
  
  <blockquote>
    <p>21.06 34.06 5.0</p>
    
    <p>12.78 45.25 6.9</p>
    
    <p>12.89 45.98 5.5</p>
  </blockquote>
  
  <p>in list view i want to display it.</p>