C# 为不可为null的int传入null将在Delta中消失<；T>；

我有一个更新实体的典型端点

public IHttpActionResult Patch([FromODataUri] int key, Delta<Individual> patch)

响应

{
    "error": {
        "code": "",
        "message": "Request contains validation errors.",
        "details": [
            {
                "target": "patch",
                "message": "",
                "innerError": {
                    "message": "Cannot convert the literal '' to the expected type 'Edm.Int32'."
                }
            }
        ]
    }
}

{
    "error": {
        "code": "",
        "message": "Request contains validation errors.",
        "details": [
            {
                "target": "patch",
                "message": "",
                "innerError": {
                    "message": "Cannot convert null to the expected type 'Edm.Int32'."
                }
            }
        ]
    }
}

但是，当我传入null时，它不会给出验证错误，并且Delta对象不会将其列为已更改的属性

请求

{ 
  "statusId": ""
}

{ 
  "statusId": null
}

预期响应

{
    "error": {
        "code": "",
        "message": "Request contains validation errors.",
        "details": [
            {
                "target": "patch",
                "message": "",
                "innerError": {
                    "message": "Cannot convert the literal '' to the expected type 'Edm.Int32'."
                }
            }
        ]
    }
}

{
    "error": {
        "code": "",
        "message": "Request contains validation errors.",
        "details": [
            {
                "target": "patch",
                "message": "",
                "innerError": {
                    "message": "Cannot convert null to the expected type 'Edm.Int32'."
                }
            }
        ]
    }
}

我们希望当他们为不可为null的字段传入null时，能够验证并返回错误，而不仅仅是默默地忽略错误

---

如何完成此任务？

标记为“必需”。