c# - ASP.NET 5 - TypeLoadException - 无法从程序集 'Microsoft.JSInterop.WebAssembly 加载类型 'WebAssembly.JSInterop.JSCallInfo'

Question

我创建了一个新的 ASP.NET 5 MVC Web 应用程序，它托管一个带有一些 .net blazor wasm 组件的 razor 类库和一个名为 Elsa 的第 3 方库。一切似乎都正常，但是当我尝试加载 Elsa 主页时，出现以下错误:

TypeLoadException: Generic method or method in generic class is internal call, PInvoke, or is defined in a COM Import class.

Unknown location
TypeLoadException: Could not load type 'WebAssembly.JSInterop.JSCallInfo' from assembly 'Microsoft.JSInterop.WebAssembly, Version=5.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60' because it contains an object field at offset 4 that is incorrectly aligned or overlapped by a non-object field.

Unknown location
ReflectionTypeLoadException: Unable to load one or more of the requested types.
Generic method or method in generic class is internal call, PInvoke, or is defined in a COM Import class.
Could not load type 'WebAssembly.JSInterop.JSCallInfo' from assembly 'Microsoft.JSInterop.WebAssembly, Version=5.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60' because it contains an object field at offset 4 that is incorrectly aligned or overlapped by a non-object field.

System.Reflection.RuntimeModule.GetTypes(RuntimeModule module)

有点迷失在这方面……不确定为什么加载常规 MVC 页面，但不加载第 3 方 MVC 库。我相信 Elsa 是为 .NET Standard 2.1 编译的。

Answer 1

对我来说，问题是我的客户端项目中缺少对 Microsoft.AspNetCore.Components.WebAssembly.DevServer 的引用。

我正在将一个 Blazor 服务器项目升级到 WASM 并遇到了这个错误，需要一段时间才能调试。