C# Mongo BsonSerializer.Deserialize Ignore elements that do not exist

Question

Is there a flat that will tell the C# Mongo BsonSerializer to ignore elements that do not exist in the poco class

Example collection

Animal {"Type" : "Cat", "Skill" : "Jump"}
Animal {"Type" : "Dog", "Skill" : "Bark", "Owner" : "Jimmy"}

If the cat C# class only has

public string Type {get;set;}
public string Skill {get;set;}

When I attempt to execute the following

 var test = BsonSerializer.Deserialize<Animal>(result);

The first item will work fine, the second one will throw an exception that Owner does not exist.

Answer 1

Use [BsonIgnoreExtraElements] attribute on Cat class.
From attribute summary:

Specifies whether extra elements should be ignored when this class is deserialized.

Answer 2

也许您可以将其反序列化为一个对象，并使用动态来接收它。

dynamic test = BsonSerializer.Deserialize<object>(result);

Answer 3

Or you can use Convention to do it for all types at once

var conventionPack = new ConventionPack { new IgnoreExtraElementsConvention(true) };
ConventionRegistry.Register("IgnoreExtraElements", conventionPack, _ => true);