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C# Programming questions specific to the Microsoft C# language. See also the forum Beginning Visual C# to discuss that specific Wrox book and code.
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Old May 19th, 2005, 05:52 AM
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Default Random Numbers

Hi,

I'm looking to generate 4 unique random numbers to be sent in 4 seperate emails when a user registers with a website. I also need to check these numbers don't already exist within an sql server table?

Can ayone give mne some help?

Thanks
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Old May 19th, 2005, 06:01 AM
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Use the System.Random class:

http://msdn.microsoft.com/library/de...ClassTopic.asp

Put your check in a loop that checks the database for existance.

Of you could generate a GUID that will always be unique and you don't need to hit the database at all.

-Peter
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