/// <summary>
/// Initiates a nested transaction.
/// </summary>
/// <returns>The nested <see cref="Transaction" />.</returns>
/// <exception cref="TransactionException">Thrown if the transaction is not open.</exception>
/// <exception cref="TransactionException">Thrown if the transaction is not on the top of the stack.</exception>
public Transaction BeginTransaction()
{
using (TimedLock.Lock(syncLock))
{
if (!isOpen)
{
throw new TransactionException(NotOpenMsg);
}
if (transBase.Count == 0 || !object.ReferenceEquals(this, transBase.Peek()))
{
throw new TransactionException("This transaction is not on the top of the stack.");
}
return(transBase.BeginTransaction());
}
}
