.net-core-3.0

来源： https://stackoverflow.com/questions/58106558/ignore-property-when-null-using-the-new-net-core-3-0-json

来源： https://stackoverflow.com/questions/58106558/ignore-property-when-null-using-the-new-net-core-3-0-json

来源： https://stackoverflow.com/questions/61384377/how-to-suppress-possible-null-reference-warnings

来源： https://stackoverflow.com/questions/61384377/how-to-suppress-possible-null-reference-warnings

来源： https://stackoverflow.com/questions/59796411/unable-to-create-an-object-of-type-applicationdbcontext-for-the-different-pat

来源： https://stackoverflow.com/questions/59796411/unable-to-create-an-object-of-type-applicationdbcontext-for-the-different-pat

来源： https://stackoverflow.com/questions/59856062/replacing-system-text-json-with-manatee-json-for-serialization-in-net-core-3

来源： https://stackoverflow.com/questions/59028418/cors-in-net-core-3-0

来源： https://stackoverflow.com/questions/59028159/exception-when-testing-custom-jsonconverter

问题 Using .NET Core 3 preview 4, the "API" template for a F# ASP.NET MVC project fails to build. This is without any changes to the template whatsoever. This is the code that fails: type Startup private () = member this.ConfigureServices(services: IServiceCollection) = // Add framework services. services.AddControllers().AddNewtonsoftJson() |> ignore With error ...\Startup.fs(23,35): error FS0039: The field, constructor or member 'AddNewtonsoftJson' is not defined. Maybe you want one of the