dotnet / dotnet/aspnetcore

[Blazor] Accessing collection of changed parameters previous values

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area-blazor enhancement feature-blazor-component-model
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Description

Hi,

This is a follow-up to an issue that was somewhat prematurely closed:
https://github.com/dotnet/aspnetcore/issues/32163

In short, I would like to access previous values of changed parameters without implementing my own solution. Inspecting the source code, it appears that authors of Blazor at some point already contemplated this feature:

https://github.com/dotnet/aspnetcore/blob/b1c34c8d357d25617924a0edfd9290b5bc745263/src/Components/Components/src/RenderTree/RenderTreeDiffBuilder.cs#L526-L547

Thank you for your consideration.

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