用expando对象从对象返回XML

我在.NETCore3.1WebAPI控制器上有一个get方法,它返回从模型类生成的expando对象。

public class MyModel 
{
    public int Id { get; set; }
    public string Name { get; set; }
}

[HttpGet("{id}")]
public async Task<IActionResult> GetAsync(int id)
{
    var recordFromDB = await dbService.GetAsync(id);

    if (recordFromDB == null)
        return NotFound();

    var returnModel = mapper.Map<MyModel>(recordFromDB).ShapeData(null);

    return Ok(returnModel);
}

public static ExpandoObject ShapeData<TSource>(this TSource source, string fields)
{
    var dataShapedObject = new ExpandoObject();

    if (string.IsNullOrWhiteSpace(fields))
    {
        var propertyInfos = typeof(TSource).GetProperties(BindingFlags.Public | BindingFlags.Instance);

        foreach (var propertyInfo in propertyInfos)
        {
            var propertyValue = propertyInfo.GetValue(source);

            ((IDictionary<string, object>)dataShapedObject).Add(propertyInfo.Name, propertyValue);
        }

        return dataShapedObject;
    }

    ... more of the method here but it's never hit so I've removed the code
}

如果我使用accept header application/json对这个记录执行get请求,那么一切都可以正常工作,json的格式与预期一致。

但是,如果我将accept头更改为application/xml,它可以工作,但格式是键值对(我得到expando对象是键值对字典)

<ArrayOfKeyValueOfstringanyType xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
    <KeyValueOfstringanyType>
        <Key>Id</Key>
        <Value xmlns:d3p1="http://www.w3.org/2001/XMLSchema" i:type="d3p1:int">1</Value>
    </KeyValueOfstringanyType>
    <KeyValueOfstringanyType>
        <Key>Name</Key>
        <Value xmlns:d3p1="http://www.w3.org/2001/XMLSchema" i:type="d3p1:string">string</Value>
    </KeyValueOfstringanyType>
</ArrayOfKeyValueOfstringanyType>

这个xml是否可以被转换成普通对象的xml?

例如。:

如果我删除ShapeData方法调用,那么:

var a = mapper.Map<MyModel>(recordFromDB);

我收到以下xml:

<MyModel xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/MyProject.Models">
    <Name>string</Name>
    <Id>1</Id>
</MyModel>