How many times can you randomly generate a GUID before you risk duplicates? (.NET)

Posted by SLC on Stack Overflow See other posts from Stack Overflow or by SLC
Published on 2010-04-11T17:37:28Z Indexed on 2010/04/11 17:43 UTC
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.NET

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mathematics

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probability

Mathematically I suppose it's possible that even two random GUIDs generated using the built in method in the .NET framework are identical, but roughly how likely are they to clash if you generate hundreds or thousands?

If you generated one for every copy of Windows in the world, would they clash?

The reason I ask is because I have a program that creates a lot of objects, and destroys some too, and I am wondering about the likelihood of any of those objects (including the destroyed ones) having identical GUIDs.

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