topic Re: undo sample in Revit API Forum

undo sample

sonicer — Sat, 29 Apr 2017 20:53:24 GMT

Is there a sample c# how undo some transaction by name?

matthew_taylor — Tue, 02 May 2017 10:13:50 GMT

Transactions can only be undone in order.

The only way to undo the last transaction is use the 'undo' command, or issue it via postcommand.

You may of course rollback your own transactions.

You would do well to explain what it is you're trying to achieve.

sonicer — Tue, 02 May 2017 14:32:43 GMT

I would like create tags....with button that is in a form ...but if user click Cancel button need undo last transaction - tag created

matthew_taylor — Wed, 03 May 2017 06:36:26 GMT

You should just be able to return 'Result.Cancelled'.

If that doesn't do what you want, you're going to have to show code to explain more fully.