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    <p>As usual the answer is: it depends. Different classes implement <code>IDisposable</code> in different ways, and it's up to you to do the necessary research.</p> <p>As far as <code>SqlClient</code> goes, the recommended practice is to do the following:</p> <pre><code>using (SqlConnection conn = /* Create new instance using your favorite method */) { conn.Open(); using (SqlCommand command = /* Create new instance using your favorite method */) { // Do work } conn.Close(); // Optional } </code></pre> <p>You <strong>should</strong> be calling <code>Dispose</code> (or <code>Close</code>*) on the connection! Do <strong>not</strong> wait for the garbage collector to clean up your connection, this will tie up connections in the pool until the next GC cycle (at least). If you call <code>Dispose</code>, it is not necessary to call <code>Close</code>, and since the <code>using</code> construct makes it so easy to handle <code>Dispose</code> correctly, there is really no reason to call <code>Close</code>.</p> <p>Connections are automatically pooled, and calling <code>Dispose</code>/<code>Close</code> on the connection does not physically close the connection (under normal circumstances). Do not attempt to implement your own pooling. <code>SqlClient</code> performs cleanup on the connection when it's retrieved from the pool (like restoring the database context and connection options).</p> <p>*if you are calling <code>Close</code>, make sure to do it in an exception-safe way (i.e. in a catch or finally block).</p>
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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