What is the correct way to check if a path is an UNC path or a local path?

Question

The easiest way to check if a path is an UNC path is of course to check if the first character in the full path is a letter or backslash. Is this a good solution or could th

Answer 1

Maybe this answer can be helpful to someone who wants to validate only UNC server + share + subdirectories, for example path to network repository like

• \\Server1\Share1
• \\Server2\Share22\Dir1\Dir2
• \\Server3

Use the following regex:

^\\\\([A-Za-z0-9_\-]{1,32}[/\\]){0,10}[A-Za-z0-9_\-]{1,32}$

• replace 32 (2 times) with maximum allowed length of server/directory name
• replace 10 with maximum allowed path depth (maximum count of directories)
• extend [A-Za-z0-9_\-] (2 times) if you are missing some character allowed in server/directory name

I've successfully tested it. Enjoy!