Send FCM

push.cs

public async Task<bool> SendPushNotification()
        {
            var applicationID = "xxx";
            var senderId = "xxx";
            var deviceId = "xxxx"

            using (var client = new HttpClient())
            {
                //do something with http client
                client.BaseAddress = new Uri("https://fcm.googleapis.com");
                client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
                client.DefaultRequestHeaders.TryAddWithoutValidation("Authorization", $"key={applicationID}");
                client.DefaultRequestHeaders.TryAddWithoutValidation("Sender", $"id={senderId}");

               
                var data = new
                {
                    to = deviceId,
                    notification = new
                    {
                        body = "This is the message Body",
                        title = "This is the title of Message",
                        icon = "myicon"
                    },
                    priority = "high"

                };

                var json = JsonConvert.SerializeObject(data);
                var httpContent = new StringContent(json, Encoding.UTF8, "application/json");

                var result = await client.PostAsync("/fcm/send", httpContent);
            }
            return true;
        }