title: regex to allow only numbers and comma in C#
body: <p>I am using regex ISMatch method to check that string contains only numbers and comma and accept below two types</p>
  
  <p>EX-> 123,456  Accepted</p>
  
  <p>EX-> 123,456, Accepted</p>
  
  <p>I am using below regex but it does not works it pass string with alphabets too</p>
  
  <pre><code>[0-9]+(,[0-9]+)*,?
  </code></pre>
  
  <p>Can anyone help me ?</p>