Hello at all,
is possible to show a 'waiting...' message before the import preview ? Because my client import big fie Excel and the preview page is long to appear. thank you very much Maurizio
You have tried the solution that Sergey contributed: https://asprunner.com/forums/topic/29623-Simple-Please-wait-message-for-long-running-operations
In your case, the events should be:
Sorry, I'm wrong.
The events indicated by Sergey are those of a button, and you don't have that situation.