Working with MongoDB Documents in C#

Review the following code, which demonstrates how to represent a document in C#.

BsonDocument

Use MongoDB.Bson to represent a document with BsonDocument. Here's an example:

using MongoDB.Bson;

var document = new BsonDocument
{
   { "account_id", "MDB829001337" },
   { "account_holder", "Linus Torvalds" },
   { "account_type", "checking" },
   { "balance", 50352434 }
};

C# Class (POCOs)

Each public property maps to a field in the BSON document.

• The BsonId attribute specifies a field that must always be unique.
• The BsonRepresentation attribute maps a C# type to a specific BSON type.
• The BsonElement attribute maps to the BSON field name.

Here's an example:

internal class Account
{
   [BsonId]
   [BsonRepresentation(MongoDB.Bson.BsonType.ObjectId)]     
   public string Id { get; set; }
     
   [BsonElement("account_id")]
   public string AccountId { get; set; }

   [BsonElement("account_holder")]
   public string AccountHolder { get; set; }

   [BsonElement("account_type")]
   public string AccountType { get; set; } 

   [BsonRepresentation(BsonType.Decimal128)]
   [BsonElement("balance")]
   public decimal Balance { get; set; }

   [BsonElement("transfers_complete")]
   public string[] TransfersCompleted { get; set; }    
}