Regular Expression for integer string
<p>I need to check the following integer input sequences:</p>

<ul>
<li>23 = true</li>
<li>23,50 = true</li>
<li><p>50-100 = true</p></li>
<li><p>34,,90 = false</p></li>
<li>34,-90 = false</li>
<li>34--90 = false</li>
</ul>

<p>how can i check it in c#</p>
