Blazor - Component expects a value for the parameter , but a value may not have been provided. When using EditorRequired.
Hi, I have problem with annoying warnings and underlining my code when component parameter is marked as required.:
Component 'TestComponent' expects a value for the parameter 'Test', but a value may not have been provided.
File TestComponent.razor:
@code {
[Parameter, EditorRequired]
public RenderFragment? Test { get; set; }
}
<div>
@Test
</div>
File Index.razor:
<TestComponent>
<Test>
<div>test</div>
</Test>
</TestComponent>
Same code works with no warnings on VS 22.
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Hi PiotrX1!
I couldn't reproduce it with the provided code in Rider versions 2022.2.3 and EAP3. What version do you use? Could you please add a solution itself?
Thank you in advance!
HI Alexandra Guk
My version is 2022.2.3 Build #RD-222.4167.23
Solution: https://mega.nz/file/glhCAD4I#T8UA4ioSqpxvhHNLN1wNlvXgpWsbgWwWKRAiqq0hJMY
I have the same issue on Rider 2022.2.3, build RD-222.4167.23.
Solution: blazor-in-action/chapter-07/BlazingTrails at main · chrissainty/blazor-in-action (github.com)
Warning: "Component 'ViewSwitcher' expects a value for the parameter 'RowTemplate', but a value may not have been provided."
Warning in file: blazor-in-action/HomePage.razor at main · chrissainty/blazor-in-action (github.com)
Hello PiotrX1, JHodgins!
Thank you for the projects. Please try the latest EAP. As I can see, the issue seems to be fixed there.
Should you have any other questions, let me know. Thanks!
From time to time I still have the issue in JetBrains Rider 2024.1.1. 'Invalidate Caches…' does not help.
Hi Dmitry Filippov, would you mind providing a minimal reproduction/sample solution of the issue so that we can investigate further?
Please upload the file to our server and share the ID.
Hi Tao Sun, to be honest, I have no idea how to prepare a sample solution to reproduce the problem.
I can suggest to open our solution https://github.com/Actual-Chat/actual-chat/blob/release/v1.11/ActualChat.sln
See ChatListTabUnreadCount.razor. My colleague also have issue there, so apparently you will able to reproduce it as well.
Hi Dmitry Filippov , it could be a bug of the code analysis.
I have created a corresponding record on our bug tracker:
RIDER-112336 False positive "Missed value for required attribute" inspection result for init only setter declared attribute.
The issue is handled by a dedicated developer there. Please upvote it and click
Watchto monitor the progress of the issue.A normal setter will not trigger the issue as same as using init only setters.