title: MeasureString with IText
body: <p>I want my columns' width be auto size, but I know this is impossible, so I try to use with the function <code>MeasureString</code> without success.</p>
  
  <p>Here is my code:</p>
  
  <pre><code>Document doc = new Document(PageSize.A4, 20, 20, 72, 72);
  doc.Open();
  PdfPTable t=new PdfPTable(2);
  //Here I want to know the size of the column.
  .
  .
  .
  doc.Close();
  </code></pre>
  
  <p>I know I need an object to set the function <code>MeasureString</code> on it, but I don't know which object.</p>