Validation of a validation expression

Answer 1

The - character has special meaning in that context. Escape it with a backslash or list it as the last character in the block.

Answer 2

In a regular expression character group [...], a minus sign means a range specifying a range of legal characters. Useful if you have lots of sequential symbols (all the letters, the digits, etc.) and don't want to list them all.

Example: [0-9] This will match all the digits 0, 1, 2, 3, 4, 5, 6, 7, 8 or 9, but not the minus sign.

To match a minus sign directly, prefix it with a backslash:

Example: [0\-9] This will match the digit 0, the minus sign, or the digit 9.

Answer 3

I haven't got an idea for the hyphen issue but I see you missed the characters 'Æ' 'æ' 'Ø' 'ø' 'Å' 'å'.

Answer 4

You have to escape the - character by placing \ in front of it. The regex would then become

^[a-zA-Z'_''\-''/'' ''\''@''&''.'',''ç''Ç''ö''Ö''I''ı''i''İ''ğ''Ğ''ş''Ş''ü''Ü'\s\d]{1,50}$