Requirements: Modify the value of static read-only fields, for some reason, the value of static read-only fields cannot be modified from the source code, nor can the modification be successful through reflection, you can try to modify the read-only field content with UnsafeAccessor.
UnsafeAccessorAttributeClass: Provides access to a specific type of inaccessible member.
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The code is as follows:
Does UnsafeAccessor support generics?
.NET 8 introduced the UnsafeAccessorAttribute property, which allows access to invisible members of the type (also known as "fast private reflection"). Due to time constraints, support for generics was not added in .NET 8. However, in CoreCLR and native AOT, some very narrow and unsupported use cases involving closed generic types do work. These use cases were supposed to be blocked, but unexpectedly they weren't. New restrictions were added in .NET 9.
In the official .NET 8 release, the use of generic types that are not intentionally supported for UnsafeAccessorAttribute is not intentional. In the early days of development, it was a potentially supported use case, but it was later delayed to .NET 9 because the team ran into complexity issues. The official documentation does not mention generics and does not provide any examples of using generics. This change corrects the behavior.
Interpretation: It is not officially supported, but it can be used in .NET 8 (although it can be used, but the official does not guarantee correctness), and this bug has been fixed in .NET 9.
Reference:
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