system.text.json

来源： https://stackoverflow.com/questions/58469794/c-net-core3-0-system-text-json-jsonserializer-serializeasync

来源： https://stackoverflow.com/questions/59780446/serialize-dataset-with-current-version-of-system-text-json-jsonserializer

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/59028159/exception-when-testing-custom-jsonconverter

来源： https://stackoverflow.com/questions/62996999/convert-object-to-system-text-json-jsonelement

问题 I have a simple class hierarchy that I want to serialize using System.Text.Json. There are 3 classes. The base is Shape . Inherited ones are Box and Circle . I have a plan to use these classes as a tagged union on my frontend app so I just introduced a discriminator property Tag . I wrote a type convertor that supports serialization/deserialization of this hierarchy. What I'm trying to understand - is this a best approach to implement such functionality or not. Indeed the output result of

问题 I don't believe I am wrapping my head around how to properly use JsonConverter for polymorphism in parsing json results. In my scenario, I am targeting Git Policy Configurations in TFS. A policy configuration: "value": [ { "createdBy": { "displayName": "username", "url": "url", "id": "id", "uniqueName": "user", "imageUrl": "url" }, "createdDate": "2020-03-21T18:17:24.3240783Z", "isEnabled": true, "isBlocking": true, "isDeleted": false, "settings": { "minimumApproverCount": 1,

问题 I don't believe I am wrapping my head around how to properly use JsonConverter for polymorphism in parsing json results. In my scenario, I am targeting Git Policy Configurations in TFS. A policy configuration: "value": [ { "createdBy": { "displayName": "username", "url": "url", "id": "id", "uniqueName": "user", "imageUrl": "url" }, "createdDate": "2020-03-21T18:17:24.3240783Z", "isEnabled": true, "isBlocking": true, "isDeleted": false, "settings": { "minimumApproverCount": 1,

问题 I'm having trouble getting the new System.Text.Json to deserialize collections stored on read-only properties. Consider these classes: public class SomeItem { public string Label { get; set; } } public class SomeObjectWithItems { public string Label { get; set; } // Note this property is read-only but the collection it points to is read/write public ObservableCollection<SomeItem> Items { get; } = new ObservableCollection<SomeItem>(); } Here's the JSON: { "Label": "First Set", "Items": [ {

问题 Using .Net Core 3's new System.Text.Json JsonSerializer, how do you automatically cast types (e.g. int to string and string to int)? For example, this throws an exception because id in JSON is numeric while C#'s Product.Id is expecting a string: public class HomeController : Controller { public IActionResult Index() { var json = @"{""id"":1,""name"":""Foo""}"; var o = JsonSerializer.Deserialize<Product>(json, new JsonSerializerOptions { PropertyNameCaseInsensitive = true, }); return View(); }