I use guids a lot (mostly because of VFP data that used them extensively that has been converted)
FWIW one thing to remember is you never want a clustered index on a UID. Inserts require a lot of thrashing. There are algorithms to produce sequential UIDs that get around this problem and SQL 2008 has newsequentialid() if you are getting keys on the back end.
>Hopefully somebody can provide a better way of doing this. The UserId field in my datareader is uniqueidentifier type in SQL Server.
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>Guid UserId = new Guid(Convert.ToString(reader["UserId"]));
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>Would this be better (more efficent):
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>Guid UserId = (Guid) reader["UserId"];
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>Overall, is it better to use the System.Convert method or do a cast like the second example?
Charles Hankey
Though a good deal is too strange to be believed, nothing is too strange to have happened.
- Thomas Hardy
Half the harm that is done in this world is due to people who want to feel important. They don't mean to do harm-- but the harm does not interest them. Or they do not see it, or they justify it because they are absorbed in the endless struggle to think well of themselves.
-- T. S. Eliot
Democracy is two wolves and a sheep voting on what to have for lunch.
Liberty is a well-armed sheep contesting the vote.
- Ben Franklin
Pardon him, Theodotus. He is a barbarian, and thinks that the customs of his tribe and island are the laws of nature.
