I need to exclude files with the following pattern:
ProjectFoo.Data[0-9]{14}.lgp
How can I use RegEx for (Visual)SVN ignore list?
The subversion ignore list don't support regular expressions. They are implemented as glob/file patterns.
These patterns don't support the {14} repeat construct.
The pattern
ProjectFoo.Data[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9].lgp
should do what you ask, but I would recommend using something like ProjectFoo.Data[0-9]*.lgp as that would be 'good enough'.