using MongoDB.Driver; using BsonExtensions; var builder = WebApplication.CreateBuilder(new WebApplicationOptions { ContentRootPath = AppDomain.CurrentDomain.BaseDirectory }); var services = builder.Services; var mongoclient = new MongoClient(builder.Configuration.GetSection("Mongo")["ConnectionString2"]); services.AddSingleton(mongoclient); services .AddMvcCore() .WithMultiParameterModelBinding() .AddBsonJsonConverters(); // Serialization in API controller var app = builder.Build(); app.MapControllers(); app.UseDefaultFiles(); app.UseStaticFiles(); app.Run();