Failed to sum splited text
<p>I have a problem when summing all of <code>bx3.text</code> to <code>t2.text</code>.
first I split <code>bx3.text</code> with space</p>

<pre><code>    private void total()
    {
        string[] ps = bx3.Text.Split(new string[] {" "}, StringSplitOptions.None );
        t2.Text = ps.Select(x =&gt; Convert.ToInt32(x)).Sum().ToString();
    }
</code></pre>

<p>I did try with <code>t2.text = ps[1]</code> and the number showed was correct.
but when i try to sum it all, I got error </p>

<blockquote>
  <p>"Input string was not in a correct format" on (x =>
  Convert.ToInt32(x))</p>
</blockquote>

<p>bx3.text is full of user-input number separated by single space " "</p>
