Serialization settings with Cosmos Db Provider

[vafzamora]

I have a customer who uses this code snippet to change default null value handling behavior for JSON serialization when using the CosmosDb client:

       var cosmosJsonOptions = new JsonSerializerSettings
        {
            NullValueHandling = NullValueHandling.Ignore
        };
        Configure(builder);         
        JsonConvert.DefaultSettings = () =>
        {
            return cosmosJsonOptions;
        };

He asked me on how to do the same for EF Core using CosmosDb provider.
I didn't find a way to set serialization options when configuring the DbContext with UseCosmos, only a subset of CosmosDb options is available.
Reading the source code I could see that the serializer instance used internally is created with JsonSerializer.Create() which, according to Newtonsoft documentation, won't use JsonConvert.DefaultSettings.

Is this by design? Is there any way to change serialization settings for CosmosDb provider?

EF Core version: 6+
Database provider: (e.g. Microsoft.EntityFrameworkCore.Cosmos)

Thanks in advance,

[ajcvickers]

Duplicate of #17306. Please vote (👍) for that issue.

[roji]

Duplicate of #17306