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I commonly write applications that will write a new log file every day, and as you can imagine, over time this be be quite a task to keep things clean and tidy. I recently found that LINQ is perfect for this scenario.

Just be sure to have a reference to System.IO and then here is the code you need:

C#

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var query = from o in Directory.GetFiles("/YourFolder", "*.*", SearchOption.AllDirectories);
let x = new FileInfo(o);
where x.CreationTime <= DateTime.Now.AddMonths(-6);
select o;
foreach (var item in query)
{
   File.Delete(item);
}

VB

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Dim query = _
From o In Directory.GetFiles("/YourFolder", "*.*", _
SearchOption.AllDirectories) _
Let x = New FileInfo(o) _
Where x.CreationTime <= DateTime.Now.AddMonths(-6) _
Select o
 
For Each item In query
File.Delete(item)
Next item

Summary

The code above will find all files older than 6 months, and delete them. Be sure if you use this code to update the search directory, and to change the search pattern (“*.*”) to only delete the files you intend to delete.

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