How to persist data on Blazor SSR + WASM Client in .NET 8 preview 6

[Markz878]

Trying to reproduce .NET 7 WASM hosted + prerendering template on .NET 8 preview 6.
Is there a possibility yet to persist the data fetched from the server side in Blazor WASM components?

[marinasundstrom]

I think you will (still) need to use PersistentComponentState for that. To my knowledge there is currently nothing that will automatically transfer component state to the client app.

https://learn.microsoft.com/en-us/aspnet/core/blazor/components/prerendering-and-integration?view=aspnetcore-7.0&pivots=webassembly

[danroth27]

We have a tag helper for this when using a .cshtml file. We'll need a component for when using a .razor file. We also need to think about how this will work with streaming rendering.

[Markz878]

@danroth27 Thanks Dan, this is crucial for us to be able to move to the new SSR style in our apps.

Could it be possible to also somehow make it easier to do the data persisting part?
Currently the PersistentComponentState with PersistingComponentStateSubscription with disposing is a bit much.
Javier showed some [Persist] attribute in one of the stand-ups, hopefully something like that would also be possible.

[danroth27]

@danroth27 Thanks Dan, this is crucial for us to be able to move to the new SSR style in our apps.

Agreed! We're going to try to get this addressed for .NET 8.

Could it be possible to also somehow make it easier to do the data persisting part? Currently the PersistentComponentState with PersistingComponentStateSubscription with disposing is a bit much. Javier showed some [Persist] attribute in one of the stand-ups, hopefully something like that would also be possible.

Yup, we're tracking having a declarative model with #26794. Give the issue a 👍 to show your interest and support.

[mkArtakMSFT]

Closing as a dupe of #49733