Discard and print other lines in C sharp
<p>appGUID: <code>643d4128-1484-4aa1-8c17-38ae3b0cf974</code>   </p>

<p>appGUID: <code>3974af88-1fb1-4ba7-84b9-59aa00c707bb</code> </p>

<p>I want my program to discard lines that contains some specific values for "appGUID" as in above.</p>

<p>My Code is here :</p>

<pre><code>IEnumerable&lt;string&gt; textLines
        = Directory.GetFiles(@"C:\Users\karansha\Desktop\Unique_Express\", "*.*")
                   .Select(filePath =&gt; File.ReadLines(filePath))
                   .SelectMany(line =&gt; line)
                   .Where(line =&gt; !line.Contains("appGUID: "))
                   .ToList();
</code></pre>
