mongodb - MongDb C# Driver is deserialzing null values for a List member as empty -


i'm using mongodb c# driver in 1 of applications. have defined entity below , defined classmaps enforce schema.

public class testentity {     public string id { get; set; }     public string name { get; set; }     public string description { get; set; }     public list<somemodel> properties { get; set; } }

also, i've defined conventions disable serialization of empty or null arrays/lists.

new conventionpack { new ignoreifnullconvention(true) conventionpack.add(new ignoreemptyarraysconvention());

everything works expected, when query document using c# driver below, properties empty list instead of null.

database.getcollection<testentity>("test").find(filter, findoptions).firstordefault()

for example, if have testentity document follows, when query using c# driver "properties" property returned empty list instead of null.

{ "_id":objectid("5991be3475f14655406cd301"), "name": "test", "description": "test" }

i couldn't find answer when searched online. hope can help. thanks

remove convention ignoreemptyarraysconvention looking @ code here seems creates new instance of list.


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