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Code Analyzer for C#

There is a newer version: 10.2.0.105762

Why is this an issue?
In Blazor, the [JSInvokable] attribute is used
to annotate a method, enabling it to be invoked from JavaScript code. The prerequisite for this functionality is that the method must be declared as
public.
 Otherwise, a runtime error will be triggered when an attempt is made to call the method from JavaScript.
How to fix it
To fix the issue, ensure the methods annotated with the [JSInvokable] attribute are public.
Code examples
Noncompliant code example
@code {
    [JSInvokable]
    private static void MyStaticMethod() { } // Noncompliant

    [JSInvokable]
    internal void MyMethod() { } // Noncompliant
}

Compliant solution
@code {
    [JSInvokable]
    public static void MyStaticMethod() { } // Compliant

    [JSInvokable]
    public void MyMethod() { } // Compliant
}

Resources
Documentation

   Microsoft Learn - Call
  .NET methods from JavaScript functions in ASP.NET Core Blazor 
   Microsoft Learn - JSInvokableAttribute
  Class