How to combine file paths in UiPath Studio

Combining paths is an essential operation of almost every workflow, yet there is no System activity dedicated to combining paths in UiPath Studio. So in this blog post we will explore the only correct way to combine two strings into a path.

Many people resort to string concatenation like in the expression below:

folderPath + "/" + fileName

This can lead to several issues:

• the path will be invalid if the folderPath already contains a trailing /
• if this is a cross-platform activity, it is important to consider that not all the operating systems use / (forward slash) for the path separator, there are some (Unix-based systems) which use a \ (backslash). This expression would result in an invalid path on such system.

Always use Path.Combine instead of string concatenation.

Path.Combine(rootFolder, logoFileName)

Path.Combine takes in a params string[] paths, so you can give it as many path segments as you’d like to combine. For example:

Path.Combine(rootFolder, mediaFolderName, imagesFolderName, logoFileName)