bug(CheckboxListGeneric): MVVM does not working expected

[coddoge]

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

2 problems found(see below)

If it's my problem, please tell me, Thanks!

Expected Behavior

• After page first shown, selected state not matched with bind-value, expected: all checked

• When click to changed value, bind-value dose not change as expected, expected: AC

Interactive render mode

Interactive WebAssembly (Client-side rendering (CSR) using Blazor WebAssembly)

Steps To Reproduce

<CheckboxListGeneric
	Items="KindFilters"
	@bind-Value="@SelectedKindFilters"
	OnSelectedChanged="@(async (_,_)=>StateHasChanged())" />

@foreach (var item in SelectedKindFilters)
{
	<span>@item</span>
}

@code {
	private readonly System.Collections.Immutable.ImmutableArray<SelectedItem<char>> KindFilters = [
		new ('a',"A"),
		new ('i',"i"),
		new ('c',"C"),
		new ('g',"G"),
	];

	private List<char> SelectedKindFilters = ['a', 'i', 'c', 'g'];
}

Exceptions (if any)

No response

.NET Version

NET9.0

Anything else?

No response

[bb-auto]

@coddoge Thank you for filing this issue. In order for us to investigate this issue, please provide a minimalistic repro project that illustrates the problem.

[coddoge]

But non-generic CheckboxList, it works, why? maybe i hit a bug.

p.s. demo doc (CheckboxListGeneric) MVVM, working not expected too

https://www.blazor.zone/checkbox-list v9.6.4-beta01

below code work as expected:

<CheckboxList TValue="List<char>"
	Items="KindFilters"
	@bind-Value="@SelectedKindFilters"
	OnSelectedChanged="@(async (_,_)=>StateHasChanged())" />

@foreach (var item in SelectedKindFilters)
{
	<span>@item</span>
}

@code {
	private readonly System.Collections.Immutable.ImmutableArray<SelectedItem> KindFilters = [
		new ("a","A"),
		new ("i","i"),
		new ("c","C"),
		new ("g","G"),
	];

	private List<char> SelectedKindFilters = [
		'a',
		'i',
		'c',
		'g'];
}

[ArgoZhang]

@coddoge 感谢参与社区，这个确认是一个 bug 已经修复马上发个 beta 包 9.6.4-beta05 请稍后再试试看