dotnet / dotnet/aspnetcore

Blazor Value cannot be null. (Parameter 'obj')

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#45,096 7 comments 0 reactions 0 assignees View on GitHub
area-blazor bug copilot-candidate feature-blazor-builtin-components good first issue help wanted Pillar: Technical Debt
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C#
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Description

### Is there an existing issue for this?

- [X] I have searched the existing issues

### Describe the bug

when calling
`EditContext.NotifyFieldChanged(FieldIdentifier);`
with a `FieldIdentifier` that has `.FieldName == null` (because the custom component is not declared using `@bind` )
we'll get this not very useful error message:
> Value cannot be null. (Parameter 'obj')`

### Expected Behavior

a better error message

### Steps To Reproduce

_No response_

### Exceptions (if any)

_No response_

### .NET Version

6

### Anything else?

_No response_

Contributor guide

Open the contributing guide

Assessment

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