Observable Collection and INotifyPropertyChanged in Blazor #6612 | Support Center | ABP Commercial

cellero created 3 months ago

ABP Framework version: v8.0++
UI type: Blazor
DB provider: EF Core

I want to refresh data on a Blazor page when data in the collection changes. Do you have any advice / recommendations?

Currently I use a timer but periodically get the exception below - it occurs when one of the clients disconnects.

System.ObjectDisposedException HResult=0x80131622 Message=Instances cannot be resolved and nested lifetimes cannot be created from this LifetimeScope as it (or one of its parent scopes) has already been disposed.

I'm considering implementing an INotifyCollectionChanged / Observable Collection: https://blazor.syncfusion.com/documentation/common/data-binding/data-updates But I'm not sure of the correct approach.

Any advice would be appreciated.

3 Answer(s)

0

liangshiwei created 3 months ago
Support Team Fullstack Developer

Hi

Yes, it's recommended.

ABP also used INotifyCollectionChanged https://github.com/abpframework/abp/blob/e6e91bf11cd219ccab72633b13994dc5be2d2932/framework/src/Volo.Abp.AspNetCore.Components.Web.Theming/Layout/PageLayout.cs
0

cellero created 2 months ago

Thanks, but the updates to the collection can be from any client.
I want to set the NotificationChange at the repository level so that a change from 1 client triggers updates to all clients.

Can, for example, the NotificationChange be implemented in the Domain Manager and for that to trigger Observable Collection updates?
0

liangshiwei created 2 months ago
Support Team Fullstack Developer

Hi,

No, it's not possible. Blazor and the backend are independent processes.

You can consider using SignalR.

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