Signalr not serialize correctly CustomNotificationData

I create a custom notification data

[Serializable]
    public class NewMessage: NotificationData
    {
        public string Data { get; set; }
        public bool IsRequired { get; set; }
        public NewMessage()
        {

        }
        public NewMessage(string data,bool isRequired)
        {
            Data = data;
            IsRequired = isRequired;
        }
}

I send it using the NotificationPublisher

var body = new NewMessage("test data with boolean", true);
NotificationPublisher.PublishAsync(notificationName, body, null, NotificationSeverity.Info, new List<Abp.UserIdentifier> { new Abp.UserIdentifier(tenantId, userId) }.ToArray())

but when I receive the message in signalR it comes in this form

{
	"type": 1,
	"target": "getNotification",
	"arguments": [{
			"tenantId": 1,
			"userId": 2,
			"state": 0,
			"notification": {
				"tenantId": 1,
				"notificationName": "NewMessage",
				"data": {
					"type": "Project.RealTime.Notifications.NewMessage",
					"properties": {}
				},
				"entityType": null,
				"entityTypeName": null,
				"entityId": null,
				"severity": 0,
				"creationTime": "2021-03-10T07:27:45.3992987-05:00",
				"id": "dfdca5d9-fddf-4962-a8d1-c75fad6fc2b1"
			},
			"id": "057a5037-5e33-4f97-ab30-8dfcbac6921e"
		}
	]
}

i check the notification on db and has the field Data and IsRequired without problem

this app is using Abp 6.2.0 and Net core 5, and postgresql database but I have the same code in another app on abp 5.14.0 and does not have this problem

thanks for your help

[acjh]

This is caused by SignalR using System.Text.Json since ASP.NET Core 3.0.

You can switch to Newtonsoft.Json:

1. Install the Microsoft.AspNetCore.SignalR.Protocols.NewtonsoftJson NuGet package.
2. Chain an AddNewtonsoftJsonProtocol method call to the AddSignalR method call in Startup.ConfigureServices:

services.AddSignalR()
        .AddNewtonsoftJsonProtocol();

https://docs.microsoft.com/en-us/aspnet/core/signalr/configuration?view=aspnetcore-5.0&tabs=dotnet#switch-to-newtonsoftjson

[ddo88]

@acjh you are the best, that work’s for me thanks