SendGrid 事件 Webhook ASP.NET MVC Post 为空

Question

I hope someone can help. I have an ASP.NET MVC website running via Azure. Ultimate goal here is to log SendGrid events to a database. First I need to get the JSON sent by SendGrid. I have turned on Event Notification under Settings--> Mail Settings--> Event Notification . Using Postman and Streaming Logs in Azure and Azure remote debugging, I have determined that my controller is indeed receiving the POST request from SendGrid, however I am not getting any JSON.

I've tried the following:

In the example below, json is null:

public ActionResult SendGridOne(string json)

In the example below, eventList is null (note this is using the Sendgrid.Webhooks nuget package):

public ActionResult SendGridOne([FromBody]SendGridEvents[] eventList)

Also have tried the following, but rawSendGridJSON is always null:

public ActionResult SendGridOne()
        {

            System.IO.StreamReader reader = new System.IO.StreamReader(HttpContext.Request.InputStream);
            string rawSendGridJSON = reader.ReadToEnd();
            System.Diagnostics.Trace.TraceInformation(rawSendGridJSON);
            return new HttpStatusCodeResult(200);
        }

Answer 1

The Sendgrid.Webhooks nuget package is correct. I test with this form, its works correctly:

using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Newtonsoft.Json;
using Sendgrid.Webhooks.Service;

namespace WebHookSendgrid.Controllers
{
    [Route("[controller]")]
    [ApiController]
    public class WebHookController : ControllerBase
    {

        // POST api/values
        [HttpPost("Sendgridwh")]
        public async Task<ActionResult> Sendgridwh([FromBody] object[] eventList)
        {
            var json = JsonConvert.SerializeObject(eventList);

            var parser = new WebhookParser();
            var events = parser.ParseEvents(json);
       
            // this is custom method, you can make yours for your needs  
            await sendGridService.EmailActivity(events);
            
            return new OkResult();
        }
    }
}

Visit Sendgrid Webhooks on Github