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I'm new to MongoDB and I've been religiously slogging through the Beginners' guide to using MongoDB 2.2 and the official C# driver http://www.codeproject.com/Articles/524602/Beginners-guide-to-using-MongoDB-and-the-offic

Everything seems to be going well, except I'm not sure how to handle a MongoDB Null value

This is my data structure

public class DataStructure
    public ObjectId _id { get; set; }
    public DateTime CreatedOn { get; set; }
    public DateTime UpdatedOn { get; set; }
    public string ClaimId { get; set; }
    public string Status { get; set; }
    public string FmcCity { get; set; }
    public string FmcState { get; set; }
    public Int32 TestType { get; set; }
    public List<LineItemStructure> LineItems { get; set; }
public class LineItemStructure
    public string LineItemDescription { get; set; }
    public string LineItemType { get; set; }
    public string PartNumber { get; set; }
    public double LaborHours { get; set; }
    public double Quantity { get; set; }
And this is the code which connects to the MongoDB and pulls back values, until it encounters a null field value and returns the error below
       var client = new MongoClient(connectionString);
       MongoServer server = client.GetServer();
       var database = server.GetDatabase("FleetClaims");
      MongoCollection< DataStructure> collection = database.GetCollection< DataStructure >("Claims");
        //Execute the query
        MongoCursor< DataStructure> results = collection.FindAll();
  
"An error occurred while deserializing the LineItems property of class
  ...: An error occurred while deserializing the LaborHours property of
  class ... : Cannot deserialize Double from BsonType Null."
Can anyone suggest a reference or different approach to handle the nulls? Will BsonString.Empty help me here?
        
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