why username does not have spaces and special characters in it?

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i am working on a client - server database application on asp.net for taking all the communication in an private organisation.
i want to know why usernames does not have any spaces and special character except underscore(_) in them??

Posted 30-Dec-11 21:24pm

Sachin gulati

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Solution 1

It depends on the application in question and the way they handle usernames, some allow spaces etc.

Posted 30-Dec-11 21:26pm

Mehdi Gholam

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Sachin gulati 31-Dec-11 3:29am

i am making database application so database can store username with space and special character...
but why most of the application and websites don't allow this?

Mehdi Gholam 31-Dec-11 4:10am

It's a design descision.

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Richard MacCutchan · Accepted Answer · 2011-12-30T22:58:00

It's purely a matter of choice. Many sites allow hyphen (-) and full stop (.) as part of userid, and email address is becoming more and more common, so some other characters are acceptable there. The main reason for not allowing spaces is that it makes it more difficult to parse the name out of a longer field if spaces are included. When designing your own system you have the freedom to accept any characters that you wish, although it is best to follow the generally accepted conventions that most users are familiar with.