Error handling with OPEN DATASET

Hi,

I have a question about the usage of error handling in OPEN DATASET

I can user MESSAGE msg option with OPEN DATASET

or

I can use TRY .... CATCH .. ENDTRY. statement.

1. Can I use both these ? or If I use one option, Is it true that I should not use the other option?

2. What is the difference between these two options?

Please let me know. Your help is appreciated.

Thank you,

Surya