Question

I am trying to use a regular expression for name field in the asp.net application.

Conditions:name should be minimum 6 characters ?

I tried the following

"^(?=.*\d).{6}$"

I m completely new to the regex.Can any one suggest me what must be the regex for such condition ?

Answer 1

Look at Expression library and choose user name and/or password regex for you. You can also test your regex in online regex testers like RegexPlanet.

My regex suggestions are:

 ^[a-zA-Z][a-zA-Z0-9._\-]{5,}$

This regex accepts user names with minimum 6 characters, starting with a letter and containing only letters, numbers and “.”,”-“,”_” characters.

Next one:

 ^[a-zA-Z0-9._\\-]{6,}$

Similar to above, but accepts “.”, “-“, “_” and 0-9 to be first characters too.

If you want to validate only string length (minimum 6 characters), this simple regex below will be enough:

 ^.{6,}$