C# MongoDB Guid 数组

Question

我有一个使用此 class

表示的文档

public class UnitDocument
{
    [BsonConstructor]
    public UnitDocument(Guid id, string allocId, Guid[] attachments)
    {
        Id = id;
        AllocId = allocId;
        Attachments = attachments;
    }

    [BsonId, BsonGuidRepresentation(GuidRepresentation.Standard)]
    public Guid Id { get; }

    [BsonElement]
    public string AllocId { get; }
    
    [BsonElement]
    public Guid[] Attachments { get; }
}

当我尝试使用 C# 驱动程序插入文档时出现以下错误：

MongoDB.Bson.BsonSerializationException: GuidSerializer cannot serialize a Guid when GuidRepresentation is Unspecified.

我尝试设置 GuidRepresentation 执行以下操作：

[BsonElement, BsonGuidRepresentation(GuidRepresentation.Standard)]
public Guid[] Attachments { get; }

完成后我得到

System.InvalidOperationException: [BsonGuidRepresentationAttribute] can only be used when the serializer is a GuidSerializer.

所以我想，我将设置序列化程序：

[BsonElement, BsonGuidRepresentation(GuidRepresentation.Standard), BsonSerializer(typeof(GuidSerializer))]
public Guid[] Attachments { get; }

然后导致：

System.ArgumentException: Value type of serializer is System.Guid and does not match member type System.Guid[]. (Parameter 'serializer')

我在这里错过了什么？

另请注意，我在启动时全局设置了以下设置：

BsonDefaults.GuidRepresentationMode = GuidRepresentationMode.V3;

一个可行的替代方案，但我不是很喜欢这个

[BsonElement, BsonRepresentation(BsonType.String)]
public Guid[] Attachments { get; }

在MongoDB中有没有办法将Guid存储在数组中？

Answer 1

将以下行添加到 start-up 代码中解决了这个问题。

BsonSerializer.RegisterSerializer(new GuidSerializer(GuidRepresentation.Standard));

C# MongoDB Guid 数组

C# MongoDB Guid Array

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