MongoDB C# Driver - Ignore fields on binding

Question

When using a FindOne() using MongoDB and C#, is there a way to ignore fields not found in the object?

EG, example model.

public class UserModel
{
           


        

Answer 1

Yes. Another way (instead of editing you model class) is to use RegisterClassMap with SetIgnoreExtraElements.

In your case just add this code when you initialize your driver:

BsonClassMap.RegisterClassMap(cm =>
{
     cm.AutoMap();
     cm.SetIgnoreExtraElements(true);
});

You can read more about ignoring extra elements using class mapping here - Ignoring Extra Elements.