How to generate different options from 2 names get from the user in C#

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.NET4.5

HI am a new learner of C#.. I wanna do some project. in my project io have to generate email id optiions for the user from the first and last name i got from the user... ie: "Firstlast@x.com, lastfirst@x.com, firstfirst@x.com"... Please suggest some methods for me...

Posted 10-Dec-12 4:27am

Cholan.V

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Pascal-78 · Answer 1 · 2012-12-10T04:59:00

To get email id that does not exist, you should have all the already existing ids in a database.

Then you look for the different combination firstlast, lastfirst, firstfirst, ...
And each time you find a matching id in your database, you create a counter a try one more time with this counter value (ex. firstlast1, then firstlast2, ...)

Or do avoid a lot of requests to the database, if you know SQL syntax, you can do a search like:

SQL

SELECT knownid FROM KnownIDTable WHERE knownid LIKE 'firstlast%'

and then analyze the rows to get the unique value for your counter.

chathuranga333 · Answer 2 · 2012-12-10T04:40:00

Solution 1

you can concatenate first name and last name. but that will not always generate an unique mail id.

my suggestion is if you are building an application with a login , the login name should be unique value. you can get a combination of login name + first name+ last name

Posted 10-Dec-12 4:40am

chathuranga333

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Pascal-78 10-Dec-12 10:51am

Adding text to an unique id does not keep it unique.
A + BC + D = AB + C + D = ABCD
A & AB are different strings but with added characters the result strings are identical.

Sergey Alexandrovich Kryukov 10-Dec-12 18:05pm

Good point. Another 5. :-)
--SA