public static object DoInTransaction(
IDesignerHost host,
string transactionName,
TransactionMethod transactionMethod,
object parameter)
{
DesignerTransaction transaction = null;
object RetVal = null;
try
{
// Create a new designer transaction.
transaction = host.CreateTransaction(transactionName);
// Do the task polymorphically.
RetVal = transactionMethod(host, parameter);
}
catch (CheckoutException ex) // something has gone wrong with transaction creation.
{
if (ex != CheckoutException.Canceled)
throw ex;
}
catch
{
if (transaction != null)
{
transaction.Cancel();
transaction = null; // the transaction won't commit in the finally block.
}
throw;
}
finally
{
if (transaction != null)
transaction.Commit();
}
return RetVal;
}
public virtual AbstractTransactionBuilder Method(TransactionMethod method)
{
((ITransaction)element).Method = method;
return(this);
}
