How to collect all files in a Folder and its Subfolders that match a string

Question

In C# how can I search through a Folder and its Subfolders to find files that match a string value. My string value could be \"ABC123\" and a matching file might be ABC123_

Answer 1

Adding to SLaks answer, in order to use the Directory.GetFiles method, be sure to use the System.IO namespace.