How to Avoid Special Characters in string

[kaustubh]

Hai.

I want only Alphabets & Digits to be entered in to my string.No any other special characters except spaces.How can I do this? 

[MikeS81]

Hi kaustubh,

you can use an event structure to check which key is pressed. If you want to check the full string, then you can use a loop and check every single character if it is in a special range. You can use the corresponding byte value for it.

Hope it helps.

Mike

[kaustubh]

Hai Mike

Thanks for ur reply.Actually I've used Match Regular With [^0-9][^a-z] as Regular Expression.But the results were not as I expected.I dont want user to enter any Special characters like !@#^>_:">? e.t.c

Hope so I've made it Clear. 

[MikeS81 · Accepted solution]

Hi kaustubh,

see the attached example.

Hope it helps.

Mike

[altenbach]

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MikeS81 wrote:

see the attached example.

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I would allow a few more, e.g. 0 and 8 to allow editing of the entered string (backspace, cursor buttons, delete key, etc.).

Message Edited by altenbach on 11-21-2008 12:49 AM

[kaustubh]

HAI Mike.

Thanks for your reply

It really worked.Thanks alot. 

[altenbach]

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kaustubh wrote:

Hai.

I want only Alphabets & Digits to be entered in to my string.No any other special characters except spaces.How can I do this? 

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Sorry, I think you also want to allow the "space" character....

Simply add a 32 to my non-default case to do this. It should now read " 0, 8, 32, 48..122"