November Happy Hour will be moved to Thursday December 5th.
AI OnAI Off
restrict String property characters
Hi,
If you use \w, then also the underscore character will be allowed. If it's ok then you could use: ^(\w|-)+$
If not, then you need to be more specific and set: ^([a-z]|[A-Z]|[0-9]|-)+$
To limit the length use {min, max} convention
The final code: ^([a-z]|[A-Z]|[0-9]|-){1,100}$
Link to fiddle.
Jul 27, 2015 22:58
In addition to Grzegorz's post, if you need support for non-English letters (ø, å,æ, etc.), you can use ^[\p{L}\d-]+$
Edited,
Jul 28, 2015 9:30
Thanks for the responses but it's not working for me. This is what I have on the property I want to check...
[RegularExpression("^(\w|-)+$", ErrorMessage = "ID Cannot contain spaces")]
VS says there is an unrecognized escape sequence. Any thoughts on what I'm doing wrong?
Jul 28, 2015 14:52
I think that you should escape the "\". You could do this in two ways:
- by doubling "\" character [RegularExpression("^(\\w|-)+$", ErrorMessage = "ID Cannot contain spaces")]
- or using "@" before string constant: [RegularExpression(@"^(\w|-)+$", ErrorMessage = "ID Cannot contain spaces")]
The code should compile now.
Jul 28, 2015 20:38
If you see my original post, I started off trying the @ symbol but that wasn't working. When I put in the double \ it does. Maybe I was doing something else wrong in the beginning. Either way, thank you for your help Grzegorz!
Jul 30, 2015 19:40
This topic was created over six months ago and has been resolved. If you have a similar question, please create a new topic and refer to this one.
I'm wanting to restrict a string property to only allow letters, digits, and dashes - no spaces. I have tried several variations with no success. Here's my latest. I'm not a regex or Epi expert so any advice or answers to my problem would be great!
[RegularExpression(@"^(\w|\d|-)$", ErrorMessage = "ID Cannot contain spaces")]