Convert object to string with custom format

Question

Let's say I have this:

[System.Version]::new(1, 2, 3, 4)

How can I convert it into "3.4"? I'm interested in piping it if possible to avoid having to create an intermediary variable.

Answer 1

this is ugly but it works inline fairly well. it uses the .Split() option to put the results into a specific number of items with all the remaining ones added to the last one.

([version]'1.2.3.4').ToString().Split('.', 3)[-1]

output = 3.4

Answer 2

Another ugly but inline solution, uses ForEach-Object to get at the piped reference.

[System.Version]::new(1, 2, 3, 4) | ForEach-Object { "$($_.Build).$($_.Revision)" }