How to store the keys generated by DSACryptoServiceProvider?

Question

As explained in the MSDN, it is possible to generate new public/private keys by calling the method DSACryptoServiceProvider.ExportParameters. The result of this method is of type DSAParameters.

What is the de facto standard on dealing with these keys? Should I generate new keys for each transaction or should I generate keys once, store them and reuse them ad eternum?

If it's better to keep them, how do I store these keys?

EDIT:

There's a previous homonymous question but the accepted answer does not answer the question.

Answer 1

Should I generate new keys for each transaction or should I generate keys once

Depends entirely on the situation/application.

how do I store these keys

DsaParameters is Serializable so you can read/write it as XML (SoapFormatter).

And the DSACryptoServiceProvider class itself has ToXml/FromXml members. Iirc this can also be used to store/restore the keys.