title: How can I check if a DataGridView contains column "x" and column "x" is visible?
body: <p>How can I check if a <code>DataGridView</code> contains column "x" and column "x" is visible?</p>
  
  <p>All I have so far is below.</p>
  
  <pre><code>if (Dgv.Columns.Contains("Address") &amp; ....
  </code></pre>
  
  <p>Thanks</p>