not able to convert int[] to int?[] : <p>Below is code implementation I am not able to convert int[] to int?[]</p>

<pre><code>days = !string.IsNullOrWhiteSpace(Days) ? 
Days.Split("|").Select(x =&gt; Convert.ToInt32(x)).ToArray() : null
</code></pre>

<p>How to resolve it in a single line </p>
