Add the Vonage .NET SDK

Move into the VonageSms directory that you created in the previous step and execute the following command:

dotnet add package Vonage

You can now open the VonageSms.csproj file in Visual Studio.

Note: This tutorial assumes that you are using Visual Studio. Alternatively, you could open the VonageSms folder in Visual Studio Code or another editor, but you might have to create some of the scaffolding that Visual Studio generates for you.