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How to avoid refreshing effect on a tree control while it's updating

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Hi Guys,

I'm populating a tree control with a lot of information and I would like to avoid that the information I'm updating are shown step by step to the user, I would prefer they will be shown when the updating procedure has finished to update the control. Is it possible to lock the control for updating and when the updating procedure is finished show the information? How can I do that?

Thank you in advance...

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I agree, but PS: make sure you turn it to false after it's done (yes, I know that sounds obvious, but I was fault finding an app recently, and found that node was wired with an error cluster that had an erro upstream, so it didn't execute - very frustrating, yet highly hillarious :D )

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