Event Hubs is a service that processes large amounts of event data (telemetry) from connected devices and applications.
In order to complete this blog you must have a azure account.
Also you should know the following things about event hub.
Event Hub is service (kind of a service bus) which collect large amount of data and store data for transforming it to real-time Analytics.
Two cons over IOT event hub
1) does not provide more secure connection.
2) data communication not bi-directional (only used for device-to-cloud scenarios).
Please follow the following steps to send the telemetry data to Azure event hub.
1.Log on to the Azure classic portal, and click NEW at the bottom of the screen.
2.Click App Services, then Service Bus, then Event Hub, then Quick Create.
3.follow the steps given https://azure.microsoft.com/en-in/documentation/articles/event-hubs-csharp-ephcs-getstarted/