Thank you for the feedback! We’ve added this to our backlog and we’ll keep you posted with status updates.
Office Extensibility Team
Peter Lindlau commented
Would be excellent!
But please make sure that the task pane is hidden and not removed, so that all objects such as event handlers stay alive
Felipe Costa Gualberto commented
Yes, it would be great.
This would cover this scenario: suppose the user selects only 10 cells, so an addin command will not take long to execute and I don't need to disturb him with a task pane in his screen because it'll be fast.
However, there may be cases where he selects an entire column and I need to show him a progress bar and additional information (like cancel button). So, I would need to call my generic progress bar task pane. After the progress bar finishes, it would be great to close it automatically.
Andre Platov commented
It would be great to hide/show office built-in panes.