To close or not to close connection in database

Question

I work with Windows-Mobile and Windows-CE using SqlCE and I dont know what better to do.

To open connection when the program open, run any

Answer 1

If worry about data lost because you are not calling Close() frequently, you can execute your code within a transaction that commits changes to disk immediately:

using (SqlCeTransaction transaction = this.connection.BeginTransaction())
{
    using (SqlCeCommand command = new SqlCeCommand(query, connection))
    {
        command.Transaction = transaction;
        command.ExecuteNonQuery();
    }
    transaction.Commit(CommitMode.Immediate);
}

Of course, there is still some performance lost when using CommitMode.Immediate too frequently.