You should probably include some sanity checks on the data before copying it to the edit fields eg:
UserData(0) is title, which should only contain letters, spaces, hyphens, commas and full-stops
UserData(2) is familyname, which should only contain letters, spaces and hyphens
UserData(3) is date of birth, which can be checked that it is within a specified range (eg, not in the future) and represents a plausible age (eg, no toddlers at university)
UserData(5) is postcode, which is usually some checkable format (eg, in Australia is 4 digits, in USA is 5 digits, in UK is letters-number-separator-number-letters)
UserData(7) is phone, which should not contain any letters (ie usually only contain digits, spaces, plus, hyphens and brackets) (hmm- sometimes has "ext")
Userdata(8) is e-mail which should contain exactly one "@", at least one full-stop after the "@", and no spaces
Userdata(9) is ID number, which presumably should contain a set number of digits (eg, 5-to-8 digits long), and possibly either no letters or maybe on letter at end.
Also, the number of fields seems small enough that you could just assign them directly, eg:
PRIVATE SUB btnCopy_Click
PRIVATE UserData() AS STRING
UserData = Regex.Split(CRLF, UserText)
edt_Title.Text = UserData(0).Trim
edt_Name = UserData(1).Trim
edt_FamilyName = UserData(2).Trim
'etc