Detecting a Dispose() from an exception inside using block

Question

I have the following code in my application:

using (var database = new Database()) {
    var poll = // Some database query code.

    foreach (Question question          


        

Answer 1

You should wrap the contents of your using block in a try/catch and roll back the transaction in the catch block:

using (var database = new Database()) try
{
    var poll = // Some database query code.

    foreach (Question question in poll.Questions) {
        foreach (Answer answer in question.Answers) {
            database.Remove(answer);
        }

        // This is a sample line  that simulate an error.
        throw new Exception("deu pau"); 

        database.Remove(question);
    }

    database.Remove(poll);
}
catch( /*...Expected exception type here */ )
{
    database.Rollback();
}