title: Trying to filter only digits in string array using LINQ
body: <p>I'm trying to filter only digits in string array. This works if I have this array:
  12324 asddd 123 123, but if I have chars and digits in one string e.g. asd1234, it does not take it.
  Can u help me how to do it ?</p>
  <pre><code>int[] result = input
              .Where(x =&gt; x.All(char.IsDigit))// tried with .Any(), .TakeWhile() and .SkipWhile()
              .Select(int.Parse)
              .Where(x =&gt; x % 2 == 0)
              .ToArray();
  </code></pre>