title: Get Columns of a Table by GetSchema() method
body: <p>I want to get list of columns of a table using <code>GetSchema</code> method in <code>ADO.Net</code>, my code is:</p>
  
  <pre><code>var dtCols = con.GetSchema("Columns", new[] { "DBName", "TableName" });
  </code></pre>
  
  <p>And i get an empty <code>DataTable</code>, what is the problem?</p>