In this aticle I explained how to publish events to Azure Event Grid Topic using C# console app.
Steps to publish Events to Event Grid Topic
· Create a azure function using Azure Event Grid Trigger template.
· If you haven't previously used Event Grid in your Azure subscription, you may need to register the Event Grid resource provider.
· Create an event grid topic provides a user-defined endpoint that you post your events to.
· You subscribe to an event grid topic to tell Event Grid which events you want to track, and where (azure function) to send the events.
· Publish an event to Event Grid Topic using URL and KEY of the custom topic created (using postman or event publisher client console app).
Publish Events to EventGrid Topic
First if all install Azure and EventGrid packages and include the below ref.
using Azure;
using Azure.Messaging.EventGrid;
- Declare and Event Grid Topic’s end point and public key:
private const string topicEndpoint = "copy and paste
here Topic end points";
private const string topicKey = "Copay and paste here
public key
- Create Event Grid Publisher Client using credentials
static Uri endpoint = new Uri(topicEndpoint);
static AzureKeyCredential
credential = new AzureKeyCredential(topicKey);
static
EventGridPublisherClient client = new
EventGridPublisherClient(endpoint, credential);
- Now create EventPublisher method to post events to Event Grid Topic
private static async Task<string> EventPublisher()
{
List<EventGridEvent> eventsList = new
List<EventGridEvent>
{
new EventGridEvent(
subject: $"New Employee: Alba Sutton",
eventType: "Employees.Registration.New",
dataVersion: "1.0",
data: new{
Id = "108",
Description = "456 College
Street, Bow, WA 98107",
isDone="true"}),
new EventGridEvent(
subject: $"New Employee: Alexandre Doyon",
eventType: "Employees.Registration.New",
dataVersion: "1.0",
data: new{
Id = "109",
Description = "456 College Street, Bow, WA 98107",
isDone="true"})
};
await
client.SendEventsAsync(eventsList);
Console.WriteLine("All events have been published to the EventGrid
Topic");
return "All events have
been published to the EventGrid Topic";
}
- Finally, call EventPublisher method from Manin method:
static async Task Main()
{
try
{
await EventPublisher();
Console.WriteLine("Press any key to exit");
Console.ReadLine();
}
catch (Exception ex)
{
Console.WriteLine($"Exception: {ex.Message}");
}
}
- The complete code example is here:
using System;
using Azure;
using System.Threading.Tasks;
using Azure.Messaging.EventGrid;
namespace AzEventbasedSolution
{
internal class Program
{
private const string topicEndpoint = "copy and paste
here Topic end points";
private const string topicKey = "Copay and paste here
public key
static Uri endpoint = new Uri(topicEndpoint);
static AzureKeyCredential
credential = new AzureKeyCredential(topicKey);
static EventGridPublisherClient client = new EventGridPublisherClient(endpoint, credential);
static async Task Main()
{
try
{
await EventPublisher();
Console.WriteLine("Press any key to exit");
Console.ReadLine();
}
catch (Exception ex)
{
Console.WriteLine($"Exception: {ex.Message}");
}
}
private static async Task<string> EventPublisher()
{
List<EventGridEvent> eventsList = new
List<EventGridEvent>
{
new EventGridEvent(
subject: $"New Employee: Alba Sutton",
eventType: "Employees.Registration.New",
dataVersion: "1.0",
data: new{
Id = "108",
Description = "456 College
Street, Bow, WA 98107",
isDone="true"}),
new EventGridEvent(
subject: $"New Employee: Alexandre Doyon",
eventType: "Employees.Registration.New",
dataVersion: "1.0",
data: new{
Id = "109",
Description = "456 College Street, Bow, WA 98107",
isDone="true"} )
};
await
client.SendEventsAsync(eventsList);
Console.WriteLine("All events have been published to the EventGrid
Topic");
return "All events have
been published to the EventGrid Topic";
}
}
}
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