App config in Class library C#
<p>I have a wpf application which is using a dll of a class library. I am unable to access the app.config value in the class library</p>

<p>How I'm trying to access app.config:</p>

<pre><code>ConfigurationSettings.AppSettings["conStr"].ToString();
</code></pre>

<p>this is returning a null value
using System.Configuration is also added .</p>