title: how to load a file into memory stream
body: <p>I have a filename pointing to a text file, including its path, as a string. Now I'd like to load this <code>.csv</code> file into memory stream. How should I do that?</p>
  
  <p>For example, I have this:</p>
  
  <pre><code>Dim filename as string="C:\Users\Desktop\abc.csv"
  </code></pre>