从引用的 .NET Framework 项目序列化值类型期间 .NET Core 项目中的 TypeLoadException

问题描述

我有以下项目依赖结构:

I have the following project dependency structure:

• _visualizerTests.dotnetcore -- .NET Core 2.2
  • Visualizer.2019 -- .NET Framework 4.7.2
  • _visualizerTests.dotnetcore -- .NET Core 2.2
    • Visualizer.2019 -- .NET Framework 4.7.2

    在 .NET Framework 项目中，我定义了以下类型:

    In the .NET Framework project, I have the following type defined:

    [Serializable]
    public struct EndNodeData {
        public string Closure { get; set; }
        public string Name { get; set; }
        public string Type { get; set; }
        public string Value { get; set; }
    }
    

    当我尝试在 .NET Core 项目中序列化此类型时:

    When I try to serialize this type in the .NET Core project:

    var endnodeData = new EndNodeData {
        Closure = null,
        Name = null,
        Type = "int",
        Value = "5"
    };
    var stream = File.Create(Path.GetTempFileName());
    var formatter = new BinaryFormatter();
    formatter.Serialize(stream, endnodeData);
    

    我收到以下异常:

    System.TypeLoadException:无法从程序集mscorlib，版本=4.0.0.0，Culture=neutral，PublicKeyToken=b77a5c561934e089"中加载类型System.Runtime.CompilerServices.IsReadOnlyAttribute".'

    .NET Framework 项目中定义的类类型序列化没有问题，.NET Core 项目中定义的值类型也是如此.

    Class types defined in the .NET Framework project serialize without a problem, as do value types defined in the .NET Core project.

    我该如何解决这个问题?

    (这是我上一个问题的后续.)

    删除 bin 和 obj 文件夹并删除解决方案的 .vs 文件夹没有帮助.

    Deleting the bin and obj folders, and deleting the solution's .vs folder doesn't help.

    我已在 .NET Core 存储库中提交了问题.>

    I've filed an issue on the .NET Core repo.

    推荐答案

    这可能已在 .NET Core 3 中修复，但在此之前，可以使用以下解决方法:

    This has presumably been fixed in .NET Core 3, but until then, the following workarounds are available:

    • 避免自动实现的属性；改用完整的属性或公共字段.(为了抑制编译器警告，我使用了 [SuppressMessage("", "IDE0032", Justification = "https://github.com/dotnet/core/issues/2981")] for这个目的.
    • 在同一个程序集或一些公共程序集中定义自定义System.Runtime.CompilerServices.IsReadOnlyAttribute.
    • Avoid auto-implemented properties; use full properties, or public fields instead. (In order to suppress the compiler warning, I used [SuppressMessage("", "IDE0032", Justification = "https://github.com/dotnet/core/issues/2981")] for this purpose.
    • Define a custom System.Runtime.CompilerServices.IsReadOnlyAttribute in the same assembly or some common assembly.

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