title: Get only year from DateTimePicker
body: <p>I have a <code>DateTimePicker</code> called <code>dtProcurationDate</code> it show the date as custom format <code>yyyy/M/d</code> .. now i'm trying to get only the year from it with code</p>
  
  <pre><code>string year = dtProcurationDate.Value.Year.ToString();
  </code></pre>
  
  <p>also tried</p>
  
  <pre><code>this.dtProcurationDate.CustomFormat = "yyyy";
  string year = dtProcurationDate.Value.Year.ToString();
  </code></pre>
  
  <p>but it gives me a null value .. </p>