[ValueObject<int>(Conversions.Default, fromPrimitiveCasting: CastOperator.Implicit, toPrimitiveCasting: CastOperator.Implicit)]
public partial struct MemberId
{
}

@page "/members/{memberId:int}"

<PageTitle>Member Details</PageTitle>

<p>This is a test page</p>

@code{
    [Parameter]
    public MemberId MemberId { get; set; }
}

System.InvalidCastException: Unable to cast object of type 'System.Int32' to type 'BlazorApp1.MemberId'.
   at Microsoft.AspNetCore.Components.Reflection.PropertySetter.CallPropertySetter[TTarget,TValue](Action`2 setter, Object target, Object value)
   at Microsoft.AspNetCore.Components.Reflection.ComponentProperties.<SetProperties>g__SetProperty|3_0(Object target, PropertySetter writer, String parameterName, Object value)

public class TestMemberId
{
    public static void TestSettingProperty()
    {
        var targetType = typeof(Test);
        var property = targetType.GetProperty("MemberId")!;
        var setMethod = property.SetMethod!;

        var propertySetterAsAction =
            setMethod.CreateDelegate(typeof(Action<,>).MakeGenericType(targetType, property.PropertyType));
        var callPropertySetterClosedGenericMethod =
            CallPropertySetterOpenGenericMethod.MakeGenericMethod(targetType, property.PropertyType);
        var setterDelegate = (Action<object, object>)
            callPropertySetterClosedGenericMethod.CreateDelegate(typeof(Action<object, object>), propertySetterAsAction);

        // Now call the setter...
        var target = new Test();

        // Boom...
        setterDelegate(target, 123);
    }

    private static readonly MethodInfo CallPropertySetterOpenGenericMethod =
        typeof(TestMemberId).GetMethod(nameof(CallPropertySetter), BindingFlags.NonPublic | BindingFlags.Static)!;

    private static void CallPropertySetter<TTarget, TValue>(
        Action<TTarget, TValue> setter,
        object target,
        object value)
        where TTarget : notnull
    {
        if (value == null)
        {
            setter((TTarget)target, default!);
        }
        else
        {
            setter((TTarget)target, (TValue)value);
        }
    }
}

public class Test
{
    [Parameter]
    public MemberId MemberId { get; set; }
}

@page "/members/{memberId:int}"

@code {
    [Parameter]
    public int MemberId { get; set; }

    protected override async Task OnInitializedAsync()
    {
        var authState = await AuthenticationStateProvider!.GetAuthenticationStateAsync();
        var user = authState.User;

        _details = await _mediator.Send(new GetMemberDetails.Query
        {
            TenantId = user!.GetTenantId(),
            MemberId = this.MemberId  // Implicit cast will do for me, MemberId on the LHS is a Vogen struct
        });
    }

    public GetMemberDetails.Response _details { get; set; } = new();
}