title: Regular expression, can only start with zero or more whitespace
body: <p>I want to match a string with a regular expression in C#. The string can only be preceeded by zero or more whitespaces, no other characters is allowed.</p>
  
  <p>Valid strings are:</p>
  
  <pre><code>"&gt; 5", " &gt; 5"
  </code></pre>
  
  <p>Invalid strings are:</p>
  
  <pre><code>"1 &gt; 5", "1&gt; 3", "&gt;&gt; 3"
  </code></pre>
  
  <p>I have this regular expression right now:</p>
  
  <pre><code>"\s*&gt; "
  </code></pre>
  
  <p>I have also tried <code>"[\s*]&gt; "</code> and <code>"[\s]*&gt; "</code> but with no luck.</p>
  
  <p>This seems like a simple problem, but im fresh to regular expressions and i failed to find an answer elsewhere.</p>
  
  <p>Thanks in advance!</p>