Hi,
I am using c# mongo db driver to insert and update a document. First i insert a record and then I try to update a specific field of record using FindOneAndUpdateAsync method. I am able to update it properly but after update I am getting a error “Required element ‘Name’ for property ‘Name’ of class SampleApp.Person is missing.” I am using MongoCommunity edition 4.4.1 and mongo driver is 2.11.4.
My collection structure is
[BsonSerializer(typeof(ImpliedImplementationInterfaceSerializer<IPerson, Person>))]
public interface IPerson
{
string Id { get; set; }
string Name { get; set; }
int Age { get; set; }
string Email { get; set; }
IAddress Address { get; set; }
bool IsActive { get; set; }
}
public class Person : IPerson
{
[BsonId]
public string Id { get; set; }
[BsonRequired]
public string Name { get; set; }
[BsonRequired]
public int Age { get; set; }
public string Email { get; set; }
public IAddress Address { get; set; }
[BsonRequired]
public bool IsActive { get; set; }
}
public interface IAddress
{
string Line1 { get; set; }
string Line2 { get; set; }
string Line3 { get; set; }
string City { get; set; }
string State { get; set; }
string Pincode { get; set; }
}
public class Address : IAddress
{
public string Line1 { get; set; }
public string Line2 { get; set; }
public string Line3 { get; set; }
public string City { get; set; }
public string State { get; set; }
public string Pincode { get; set; }
}
My code to insert and update is as shown below.
MongoClient client = new MongoClient("mongodb://localhost:27017");
var database = client.GetDatabase("test");
BsonClassMap.RegisterClassMap<Address>();
var peopleCollection = database.GetCollection<IPerson>("People");
IPerson person = new Person()
{
Age = 50,
Email = "a@a.com",
IsActive = false,
Name = "David",
Id = ObjectId.GenerateNewId().ToString()
};
try
{
await peopleCollection.InsertOneAsync(person);
IAddress address = new Address()
{
City = "Bengaluru",
Line1 = "Bengaluru",
Line2 = "Bengaluru",
Line3 = "Bengaluru",
Pincode = "560001",
State = "KA"
};
var updateDefinition = Builders<IPerson>.Update.Set(x => x.Address, address).Set(x => x.IsActive, true);
var filter = Builders<IPerson>.Filter.Eq(x => x.Email, "a@a.com");
FindOneAndUpdateOptions<IPerson> updateOptions = new FindOneAndUpdateOptions<IPerson>
{
IsUpsert = false,
ReturnDocument = ReturnDocument.After,
Projection = Builders<IPerson>.Projection.Include(c => c.Address)
};
IPerson updatedPerson = await peopleCollection.FindOneAndUpdateAsync(filter, updateDefinition, updateOptions);
}
catch (Exception ex)
{
string s = ex.Message;
Console.WriteLine(s);
}
I am attaching mongo compass view for your reference.
