Hi Gerard,

Thanks for the runnable project. I am converting this ticket to a public feature request and we will evaluate it. (By the way, it's better to include explanations in the ticket, rather than the project.) I am pasting the important part here:

>> I'd like to have the content of a splitter pane persist between the collapse and expand events, but I don't see a property for this (similar to the PersistTabContent="true" property for the TabStrip component). 

In the meantime, my suggestion is to retrieve the TreeView Data and bind the component automatically in OnInitialized or another suitable event of TreeComponent.razor, so that there is no need to do it manually every time. If your main goal is performance and efficiency, you can even experiment with an implementation that stores or passes the TreeView Data from the parent component.

Regards,
Dimo
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