Um ... Igor, two people gave you very good answers to this exact question
after you posted it 12 days ago. Please read their answers and if it
doesn't answer your question, then re-state it more explicitly.
2. I will do debugging, and step into each lines of code
3. You will know which line of code will stop, and pop out the exception
4. While debugging, check the values with the watch tool
Hope it helps.
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