how to manage _id field when using POCO with mongodb c# driver

Question

If I want to read and write mongo data with a POCO

public class Thingy
{
     public string Foo {get;set;}
}
...
coll.Insert(new Thing(Foo = \"hello\"));
         


        

Answer 1

You have to add a property (or field) for id and tell serializer which id generator you'd like to use.

[BsonId(IdGenerator = typeof(ObjectIdGenerator))]
public object ThingyId { get; set; }

There are 3 available in MongoDb Driver or you can write your own. More info at http://www.mongodb.org/display/DOCS/CSharp+Driver+Serialization+Tutorial#CSharpDriverSerializationTutorial-WriteacustomIdgenerator