Regarding Applying validation in textbox through Regular Expression.

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Hello Developers

I am trying to applying validation in Textbox control for limiting empty space in control. Following is the Regular Expression code I'm using:

Regularexpression validationexpression="^[^-\s][a-zA-Z0-9_\s-]+$" errortext="" />

Now my requirement is:
1- User should not enter empty space in begining. (Working fine)
2- Textbox limit is upto 10 numbers, user will able to enter as much as number he wants, no validation if he enter less than 10 numbers. (Working fine.)
3- validation should prompt if user enter the numbers like this "111 111 ", means show validation if there is empty space between numbers. (Not working)

Currently I'm using following Regular Expression to achieve this thing, please let me know or update my regular expression so I can achieve this requirement.

Regularexpression validationexpression="^[^-\s][a-zA-Z0-9_\s-]+$" errortext="" />

Thank you.

Regards,

Posted 18-Oct-14 2:09am

Member 9207317

Updated 18-Oct-14 2:19am

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amit29391 · Answer 1 · 2014-10-18T02:29:00

Solution 2

refer this
http://stackoverflow.com/questions/2842823/how-to-prevent-white-spaces-in-a-regular-expression-regex-validation

Posted 18-Oct-14 2:29am

amit29391

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Member 9207317 19-Oct-14 23:47pm

Thanks @amit for your reply but it's not fullfil my requirement, As I wrote in my question
I need all the following requirements fulfill in one regular experssion:

1- User should not enter empty space in begining. (Working fine)
2- Textbox limit is upto 10 numbers, user will able to enter as much as number he wants, no validation if he enter less than 10 numbers. (Working fine.)
3- validation should prompt if user enter the numbers like this "111 111 ", means show validation if there is empty space between numbers. (Not working)

So my 3rd requirement is not completed in my current regular expression, I have checked the link provided by you it's not giving user option for enter numbers upto 10 digits, user can enter all 10 numbers or 3-4 numbers (Maximum limit is 10 numbers but user can enter like "2345" only 4 in starting because this field is used for telephone extension).

Please suggests how can I achieve this.

Regards,

Member 9207317 · Answer 2 · 2014-10-20T02:04:00

Hello

Thanks for your help, Now it's working fine, actually I had used the masking in devExpress textbox due to which the regular experession not working fine and giving issues. I have removed it now and it's working correctly. For limiting the length to 10 digits I have used the property MaxLength="10". Currently I'm using the following Regular Expression which is working fine:

^[a-zA-Z0-9_-]{1,10}$

Many Thanks.

Regards,