Google Gemini in .NET: The Ultimate Guide with Jochen Kirstaetter
Release Date: 04/18/2025
The Modern .NET Show
Show Notes Hey everyone, and welcome back to The Modern .NET Show; the premier .NET podcast, focusing entirely on the knowledge, tools, and frameworks that all .NET developers should have in their toolbox. I'm your host Jamie Taylor, bringing you conversations with the brightest minds in the .NET ecosystem. This episode is a super important, top-of-the-heap, bonus episode that you definitely need to be listening to. I, basically, reached out to Hayden Barnes, who we've just now had on the show to talk about .NET never-ending support and what happens when you drop out of support with Microsoft....
info_outlineThe Modern .NET Show
Strategic Technology Consultation Services This episode of The Modern .NET Show is supported, in part, by . If you're an SME (Small to Medium Enterprise) leader wondering why your technology investments aren't delivering, or you're facing critical decisions about AI, modernization, or team productivity, let's talk. Show Notes "There's a good chance it's not gonna flag for you that, you, know your point of sale system is on .NET six and is now vulnerable, you know. So to a certain extent, companies often aren't even aware and this is something I've learned to be in this space. They're not...
info_outlineThe Modern .NET Show
Strategic Technology Consultation Services This episode of The Modern .NET Show is supported, in part, by . If you're an SME (Small to Medium Enterprise) leader wondering why your technology investments aren't delivering, or you're facing critical decisions about AI, modernization, or team productivity, let's talk. Show Notes "It's not just guessing. It's not just saying, "oh, there's something to log in. I think we'll call the button login." It actually knows the button is called Login, it's seen it. So that makes a big difference and makes it much more resilient. So that's definitely a big...
info_outlineThe Modern .NET Show
Strategic Technology Consultation Services This episode of The Modern .NET Show is supported, in part, by . If you're an SME (Small to Medium Enterprise) leader wondering why your technology investments aren't delivering, or you're facing critical decisions about AI, modernization, or team productivity, let's talk. Show Notes "And we talk about that contract. We say, "this is your contract. This Open API definition that you have is the contract for your service." And in the end, that's how customers interact with Azure is through APIs. And so it's important to have that contract so that...
info_outlineThe Modern .NET Show
Strategic Technology Consultation Services This episode of The Modern .NET Show is supported, in part, by . If you're an SME (Small to Medium Enterprise) leader wondering why your technology investments aren't delivering, or you're facing critical decisions about AI, modernization, or team productivity, let's talk. Show Notes "What do I mean by compute? Compute is whenever you want a computer to do a thing, okay, it requires the CPU to exist and I want the CPU to do a thing. How well it can do it Is based upon what kind of CPU you have. What kind of CPU they have since have it in miniature...
info_outlineThe Modern .NET Show
Strategic Technology Consultation Services This episode of The Modern .NET Show is supported, in part, by . If you're an SME (Small to Medium Enterprise) leader wondering why your technology investments aren't delivering, or you're facing critical decisions about AI, modernization, or team productivity, let's talk. Show Notes "Simple is always the better choice, but easy is not always the best. So sometimes you'll go to graph, it's a little bit harder for us to write the code for around it, but the bandwidth consumption is considerably smaller. the compute consumption and the ability for it to...
info_outlineThe Modern .NET Show
Strategic Technology Consultation Services This episode of The Modern .NET Show is supported, in part, by . If you're an SME (Small to Medium Enterprise) leader wondering why your technology investments aren't delivering, or you're facing critical decisions about AI, modernization, or team productivity, let's talk. Show Notes "I think, regardless of how technology evolves, it's very important and us the most important thing is for us to be decent and understanding of each other and to be willing to like work towards a common goal."— Safia Abdalla Hey everyone, and welcome back to The Modern...
info_outlineThe Modern .NET Show
Strategic Technology Consultation Services This episode of The Modern .NET Show is supported, in part, by . If you're an SME (Small to Medium Enterprise) leader wondering why your technology investments aren't delivering, or you're facing critical decisions about AI, modernization, or team productivity, let's talk. Show Notes "From the first engagement with any from Umbraco, it's been a friendly approach. We are friendly. It's a part of our DNA. Professional. We take our work dead seriously, but we want to have fun, but we are friendly."— Mats Persson Hey everyone, and welcome back to The...
info_outlineThe Modern .NET Show
RJJ Software's Software Development Service This episode of The Modern .NET Show is supported, in part, by , whether your company is looking to elevate its UK operations or reshape its US strategy, we can provide tailored solutions that exceed expectations. Show Notes "So the cloud adoption framework actually has a lot of steps for organizations or IT teams to start assessing their existing environments first and planning the stage before they modernise and migrate to Azure. And then the well-architected framework allows the team, whoever is involved, developers, engineers, or architects,...
info_outlineThe Modern .NET Show
RJJ Software's Software Development Service This episode of The Modern .NET Show is supported, in part, by , whether your company is looking to elevate its UK operations or reshape its US strategy, we can provide tailored solutions that exceed expectations. Show Notes "Yeah, exactly. In fact, one of the central premises of Dapr has, you know, one of its goals is not only to be multi-language, in that anyone can use the APIs from any language they come from. So it has SDKs. First, you can call it HTTP if that's all you care about. But it has SDKs for Java, JavaScript, of course, .NET, Python,...
info_outlineRJJ Software's Software Development Service
This episode of The Modern .NET Show is supported, in part, by RJJ Software's Software Development Services, whether your company is looking to elevate its UK operations or reshape its US strategy, we can provide tailored solutions that exceed expectations.
Show Notes
"So on my side it was actually, the interesting experience was that I kind of used it one way, because it was mainly about reading the Python code, the JavaScript code, and, let’s say like, the Go implementations, trying to understand what are the concepts, what are the ways about how it has been implemented by the different teams. And then, you know, switching mentally into the other direction of writing than the code in C#."— Jochen Kirstaetter
Welcome friends to The Modern .NET Show; the premier .NET podcast, focusing entirely on the knowledge, tools, and frameworks that all .NET developers should have in their toolbox. We are the go-to podcast for .NET developers worldwide, and I am your host: Jamie “GaProgMan” Taylor.
In this episode, Jochen Kirstaetter joined us to talk about his .NET SDK for interacting with Google’s Gemini suite of LLMs. Jochen tells us that he started his journey by looking at the existing .NET SDK, which didn’t seem right to him, and wrote his own using the HttpClient and HttpClientFactory classes and REST.
"I provide a test project with a lot of tests. And when you look at the simplest one, is that you get your instance of the Generative AI type, which you pass in either your API key, if you want to use it against Google AI, or you pass in your project ID and location if you want to use it against Vertex AI. Then you specify which model that you like to use, and you specify the prompt, and the method that you call is then GenerateContent and you get the response back. So effectively with four lines of code you have a full integration of Gemini into your .NET application."— Jochen Kirstaetter
Along the way, we discuss the fact that Jochen had to look into the Python, JavaScript, and even Go SDKs to get a better understanding of how his .NET SDK should work. We discuss the “Pythonistic .NET” and “.NETy Python” code that developers can accidentally end up writing, if they’re not careful when moving from .NET to Python and back. And we also talk about Jochen’s use of tests as documentation for his SDK.
Anyway, without further ado, let's sit back, open up a terminal, type in `dotnet new podcast` and we'll dive into the core of Modern .NET.
Supporting the Show
If you find this episode useful in any way, please consider supporting the show by either leaving a review (check our review page for ways to do that), sharing the episode with a friend or colleague, buying the host a coffee, or considering becoming a Patron of the show.
Full Show Notes
The full show notes, including links to some of the things we discussed and a full transcription of this episode, can be found at: https://dotnetcore.show/season-7/google-gemini-in-net-the-ultimate-guide-with-jochen-kirstaetter/
Jason's Links:
Other Links:
- Generative AI for .NET Developers with Amit Bahree
- curl
- Noda Time with Jon Skeet
- Google Cloud samples repo on GitHub
- Google's Gemini SDK for Python
- Google's Gemini SDK for JavaScript
- Google's Gemini SDK for Go
- Vertex AI
- JoKi's base NuGet package: Mscc.GenerativeAI
- JoKi's NuGet package: Mscc.GenerativeAI.Google
- System.Text.Json
- gcloud CLI
- .NET Preprocessor directives
- .NET Target Framework Monikers
- QUIC protocol
- IAsyncEnumerable
- Microsoft.Extensions.AI
Supporting the show:
Getting in Touch:
Remember to rate and review the show on Apple Podcasts, Podchaser, or wherever you find your podcasts, this will help the show's audience grow. Or you can just share the show with a friend.
And don't forget to reach out via our Contact page. We're very interested in your opinion of the show, so please get in touch.
You can support the show by making a monthly donation on the show's Patreon page at: https://www.patreon.com/TheDotNetCorePodcast.
Music created by Mono Memory Music, licensed to RJJ Software for use in The Modern .NET Show