I have Enum:

{{}}

public enum SomeType
{
   TypeA,
   TypeB, 
   TypeC
}

{{}}

but in MongoDB i would like this map to: type_a type_b type_c

I'm using EnumRepresentationConvention(BsonType.String)

I tried:

{{}}

public enum SomeType
{
   [BsonElement("type_a")]
   TypeA,
   [BsonElement("type_b")]
   TypeB, 
   [BsonElement("type_c")]
   TypeC
}

{{}}

but this doesn't work. Im getting exception:

Requested value 'type_a' was not found.

Is anyone know how can achieve such mapping in MongoDb C# driver?