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Difficulty: EasyImplement Azure Event Grid Solutions

You are developing a C# application that needs to publish telemetry events to an Azure Event Grid custom topic. You plan to use the Azure SDK for .NET (specifically the Azure.Messaging.EventGrid NuGet package). Which sequence of steps must you perform in your code to publish the events?

  1. 1Retrieve the custom topic endpoint URI and access key from your application configuration.
  2. 2Instantiate the EventGridPublisherClient using the endpoint URI and AzureKeyCredential.
  3. 3Construct a collection of EventGridEvent objects populated with event details such as subject, event type, and data payload.
  4. 4Invoke SendEventsAsync on the publisher client, passing the collection of events.

Answer

The correct sequence of steps to publish events is to first retrieve the custom topic endpoint and key, then instantiate the EventGridPublisherClient, next construct the collection of EventGridEvent objects, and finally invoke SendEventsAsync to transmit the events.
To publish events, you must first fetch the configuration settings (endpoint and key), configure the client with those credentials, prepare the list of events to send, and finally call the send method on the client.

Step-by-Step Solution

1
Retrieve custom topic credentials
Endpoint URI and access key are available in memory.
These credentials are required to authorize the client when communicating with the Azure Event Grid custom topic.
2
Instantiate EventGridPublisherClient
An active client instance is ready for sending events.
The client handles connections and serialization, requiring the endpoint URI and an AzureKeyCredential initialized with the access key.
3
Construct EventGridEvent objects
A list or collection of event models ready to be transmitted.
You must define the metadata (subject, eventType, dataVersion) and the payload data for the events before publishing.
4
Invoke SendEventsAsync
Events are transmitted and published to the Event Grid topic.
The SendEventsAsync method sends the prepared batch of events to the target endpoint asynchronously.

Key Concept

Publishing events to an Azure Event Grid custom topic using the Azure Messaging EventGrid client library for .NET.
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Topics

Implement Azure Event Grid Solutions