When we want to exclude several folders from the extraction in the repository, what we do is to select the root folder and under that folder we check the folders we want to analyze .The ones we do not want to analyze remains unchecked.
But what if you have in the same level as the folders being excluded ,there is a csproj and you need to analyze it while excluding all other sub-folders and files in it.
This page will illustrate how to use a regular expression to achieve this.

Please use the below regular expression which will allow you to retain a folder while excluding its subfolders and files.
Regex: <name of folder>/.*$

EX:
Root = svn://gargantua/DEV/trunk/3rdParties/java
Excluded = binaries/.*$
Here, any sub-folder that comes after binaries will be excluded while retaining the content of binaries.

In the log, with the DETAIL level, we can see all the different folders that have been ignored.

Webcall-28542