Code Traveler

Running On-Device LLMs in .NET MAUI with `Microsoft.Maui.Essentials.Ai`

The fastest, cheapest, most private LLM call is the one that never leaves your phone. Microsoft.Maui.Essentials.Ai makes it easy. This is Part 7 of our Microsoft.Extensions.AI series. Every LLM we've talked about thus far (Ollama, OpenAI, Azure) ran somewhere else. This week, our

Connecting to Any OpenAI-Compatible Endpoint with `Microsoft.Extensions.AI.OpenAI`

Did you know the Microsoft.Extensions.AI.OpenAI NuGet Package works with far more than just OpenAI? One adapter package unlocks every OpenAI-compatible endpoint on the internet — and even the ones on your laptop! This is Part 6 of our Microsoft.Extensions.AI series. We've already used

Evaluating AI Safety in .NET with `Microsoft.Extensions.AI.Evaluation.Safety`

Last week we tested whether our LLM's answers were accurate. But are they safe for our company to use, responsing with no harmful content or violence? Microsoft.Extensions.AI.Evaluation.Safety makes it easy to check. This is Part 5 of our Microsoft.Extensions.AI series. In Part

Unit Testing LLMs: Evaluating LLM Quality in .NET with `Microsoft.Extensions.AI.Evaluation`

How do we unit test an LLM that never gives the same answer twice? Microsoft.Extensions.AI.Evaluation makes it easy. This is Part 4 of our Microsoft.Extensions.AI series. In Part 1 we built a chat app with IChatClient — but how do we know its answers are any

Generating Images in .NET with `IImageGenerator`

Did you know Microsoft.Extensions.AI can generate images too? IImageGenerator makes it easy! This is Part 3 of our Microsoft.Extensions.AI series. In Part 1 we created an AI Chat Bot with an LLM using IChatClient, and in Part 2 we built semantic search using IEmbeddingGenerator. This week,

Adding Semantic Search to .NET Apps with `IEmbeddingGenerator`

Have you ever typed "How do I get my money back?" into a search box and gotten zero results, because the docs only ever say "refund policy"? Embeddings fix this! And Microsoft.Extensions.AI makes it easy than ever to do. This is Part 2 of

Creating an AI Chat Bot in .NET with `IChatClient`

Are you looking to implement AI in your .NET app? Microsoft.Extensions.AI makes it easy! This is the first post in a new series where we'll learn Microsoft.Extensions.AI together, one building block at a time. Let's start with the most important building block

Introducing Bindable Property Source Generators

I am excited to announce two new source generators introduced in CommunityToolkit.Maui v14.0.0 : * [BindableProperty] * [AttachedBindableProperty<T>] These new source generators make it easier than ever to create a BindableProperty in your .NET MAUI apps. In fact, all Bindable Properties in CommunityToolkit.Maui are now automatically

Introducing AWSSDK.Extensions.Bedrock.MEAI

Are you looking to add GenAI functionality to your .NET app? AWSSDK.Extensions.Bedrock.MEAI makes it easy. Let's define what some of these words mean, then check out how to use this NuGet Package in our apps! You're also welcome to skip the definitions and

Upgrading from Xamarin.CommunityToolkit.Markup to CommunityToolkit.Maui.Markup

In Xamarin.Forms, we used Xamarin.CommunityToolkit.Markup to create our UI using C# (no XAML). For .NET MAUI, we can continue to create our UIs in C# (No XAML) thanks to CommunityToolkit.Maui.Markup. Let's take a look at the key differences between the two libraries, and

.NET MAUI

.NET MAUI Training Courses

Two new training courses containing over 10 hours of video content and code examples to help you become a successful .NET MAUI developer!

Xamarin

Supporting Android v12+ Splash Screens in Xamarin.Forms

Android recently changed how splash screens work in Android v12.0 (API Level 31). Let's take a look at how to support it in our Xamarin.Forms apps!

.NET MAUI

Using .NET MAUI Community Toolkit

The .NET Community Toolkit recently debuted. Let's take a look at how to use some of it's features, and how we can contribute more!

azure functions

Creating Azure Functions using .NET 5

Azure Functions recently released support for .NET 5. Let's take a look at how to upgrade our existing Azure Functions to use it!

Refit

Upgrading to Refit v6.0 + Newtonsoft.Json

Refit recently released v6.0, replacing Newtonsoft.Json with System.Text.Json which may cause some breaking changes. Let's discuss how we can continue using Newtonsoft.Json with Refit!

GitHub

Introducing GitHubApiStatus

GitHub's API Rate Limits can be confusing and difficult to work with. This library makes it easy to check the rate limits with one line of code!

Xamarin

Using Immutable Objects with SQLite-Net

SQLite-NET has become the most popular database, especially amongst Xamarin developers, but it hasn't supported Immutable Objects, until now! Thanks to Init-Only Properties in C#9.0, we can now use Immutable Objects with our SQLite database!

Xamarin.Forms

Adding a Search Bar to Xamarin.Forms.NavigationPage

31 Oct 2020 Update: Updated for AndroidX + Xamarin.Essentials Let's look at how to add the native search bar control into the Xamarin.Forms.NavigationPage Both Xamarin.iOS and Xamarin.Android offer the capability to natively add a search bar to the navigation bar using UISearchController and SearchView,

Xamarin.Forms

Improving CollectionView Scrolling

Sometimes scrolling a Xamarin.Forms.CollectionView (especially on Android) can be choppy. Let's take a look at how to fix it!

Xamarin Featured

Introducing GitTrends: GitHub Insights

iOSAndroid [https://apps.apple.com/us/app/gittrends-github-insights/id1500300399] [https://play.google.com/store/apps/details?id=com.minnick.gittrends]I am so excited to release GitTrends on Product Hunt today! https://www.producthunt.com/posts/gittrends-github-insights GitTrends helps you to monitor your GitHub Repositories: ✅ Connect

azure functions

Updating to Azure Functions v3 in Visual Studio

Azure Functions v3 was recently released on 09 December 2019 [https://azure.microsoft.com/updates/announcing-go-live-release-for-azure-functions-v3?WT.mc_id=functionsv3-codetraveler-bramin] with support for .NET Core 3 [https://docs.microsoft.com/dotnet/core/whats-new/dotnet-core-3-0?WT.mc_id=

Xamarin

Xamarin: Efficiently Using a SQLite Database

The most popular SQLite ORM for Xamarin is SQLite-net. Let's explore the most efficient way to use it in our apps! If you'd like to skip to the completed code, jump to Section 9: Put It All Together. A completed sample app using this implementation

Xamarin.UITest

Xamarin.UITest: Is a ListView (or RefreshView) Refreshing?

Automated UITesting has become critical for publishing mobile apps and almost every Xamarin.Forms app has ListView. But how can we determine if our ListView is refreshing? Let's find out!

Xamarin.Forms

Xamarin: Creating a Dark Mode Splash Screen

Now that iOS 13 and Android Q support Dark Mode, we'll want our app's Splash Screen to be dark too. Let's explore how to create a Splash Screen that is dark when Dark Mode is enabled, but still light when Dark Mode is disabled!

Xamarin

Version Conflict Detected for Xamarin.Android.Support

Both Xamarin.Forms and Xamarin.Essentials recently increased their Xamarin.Android.Support dependency to v28.0.0.3, and it might cause a weird error when updating NuGet Packages. Let's see how to fix it!