[SupplyParameterFromQuery] property not being set during OnInitializedAsync

[MohamedTwheed]

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

After migrating from .net7 to .net8 I encountered an issue that properties with [SupplyParameterFromQuery] not being set druing the OnInitializedAsync only after OnParametersSetAsync.

Ex of the bug:
Navigation with: https://localhost:44340/test?CrumbTrailItemId=662f20c8-b7c1-4145-a8cd-ad693913414a

    [SupplyParameterFromQuery]
    public string CrumbTrailItemId { get; set; }

    protected async Task OnInitializedAsync()
    {
        // this.CrumbTrailItemId  is null
    }

    protected async Task OnParametersSetAsync()
    {
        // this.CrumbTrailItemId  is "662f20c8-b7c1-4145-a8cd-ad693913414a"
    }

Expected Behavior

The property with annotation SupplyParameterFromQuery should be set at the beginning of the life cycle of the component but somehow its being set after OnParametersSetAsync.

Ex of expected behavior:
Navigation with: https://localhost:44340/test?CrumbTrailItemId=662f20c8-b7c1-4145-a8cd-ad693913414a

    [SupplyParameterFromQuery]
    public string CrumbTrailItemId { get; set; }

    protected async Task OnInitializedAsync()
    {
        // this.CrumbTrailItemId  is "662f20c8-b7c1-4145-a8cd-ad693913414a"
    }

Steps To Reproduce

Exceptions (if any)

.NET Version

8.0.0

Anything else?

none

[symbiotic]

i'm using noticing similar issues after moving from .NET 7 to .NET 8. with the parameter not always set, but also OnInitializedAsync not always firing. i'm using the components as a page though (with the page directive @page). i'll have to find time to create a separate issue, because this is a huge problem for me

[hakenr]

related #51398

[MackinnonBuck]

Tried this myself and in my basic test app, I was able to access updated values of [SupplyParameterFromQuery] properties in OnInitializedAsync(). This was true both when refreshing the page and navigating from another page.

Could you provide a repro project so we can investigate the issue further?

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[rabberbock]

@MackinnonBuck Here is a repro. https://github.com/rabberbock/SupplyQueryBugNet8/tree/main/BlazorApp

The issue surfaces when the page you are navigating from has SupplyParameterFromQuery and the page you are going to has one as well.

https://github.com/rabberbock/SupplyQueryBugNet8/blob/main/BlazorApp/Pages/Counter.razor#L16
https://github.com/rabberbock/SupplyQueryBugNet8/blob/main/BlazorApp/Pages/Home.razor#L22

Screenshare.-.2024-01-18.5_06_29.PM.mp4

Thank you for all the hard work the Blazor team puts in!

[kyletinsley]

I can confirm this issue is still occurring in 8.0.1.
Related: #51398

[milkyjoe90]

I'm also experiencing this issue in 8.0 and 8.0.1, have reverted back to 7 in order to continue developing.

[MohamedTwheed]

This issue still exist and as a workaround i've to manually parse out the parameters inside OnInitialized for the first run.
any stable solution?