使用 C# 反射时无法创建类型 System.Fabric.FabricServiceNotFoundException 的通用 Class

Question

我有以下函数接收错误并创建 ErrorType<T>

的 class 实例

 private dynamic GenerateDynamicErrorHandler(Exception ex)
    {
        try
        {
            string typeName = ex.GetType().FullName;
            Type typeArgument = Type.GetType(typeName);
            Type genericClass = typeof(ErrorType<>);

            Type constructedClass = genericClass.MakeGenericType(typeArgument);

            dynamic created = Activator.CreateInstance(constructedClass);
            return created;
        }
        catch
        {
            throw new ReflectionException(ex.GetType().FullName);
        }
    }

然后 returns 一个 dynamic 对象在下面的代码片段中：

 try
        {
            dynamic c = GenerateDynamicErrorHandler(ex);

            if (c.IsError())
            {
                return c.GenericResponse<ErrorDetails,AppendingErrors>(isDebug,
                    isDefaultConverter,
                    context, 
                    _errorDetailResponseFactory.CreateDefaultError(ex.Message,ex.InnerException,context.Response.StatusCode),
                    new AppendingErrors
                    {
                        Title = c.Get().Title,
                        ResultCode = c.Get().ResultCode,
                        StackTrace = ex.StackTrace

                    });
            }
            return HandleError.WithDefaultJsonConverter<ErrorDetails>(context, 
                _errorDetailResponseFactory.CreateDefaultError(ex.Message,ex.InnerException,context.Response.StatusCode));
        }
        catch(ReflectionException re)
        {
            return HandleError.WithGenericApendingJsonConverter<ErrorDetails, object>(context,
            _errorDetailResponseFactory.CreateDefaultError(ex.Message, ex.InnerException, context.Response.StatusCode), 
            new {
                reflectionError = re.Message
            });
        }

这适用于除 System.Fabric.FabricServiceNotFoundException 之外的所有异常，我不明白或不知道为什么。如果有人可以提供帮助，将不胜感激

Answer 1

感谢@Flydog57，问题实际上是获取类型的名称，然后尝试从该名称创建类型。正如评论中所说，简单的解决方法是使用

中传递的异常类型

private dynamic GenerateDynamicErrorHandler(Exception ex)
    {
        try
        {
            Type typeArgument = ex.GetType();
            Type genericClass = typeof(ErrorType<>);

            Type constructedClass = genericClass.MakeGenericType(typeArgument);

            dynamic created = Activator.CreateInstance(constructedClass);
            return created;
        }
        catch(Exception e)
        {
            throw new ReflectionException(ex.GetType().FullName);
        }
    }