Announcing .NET MAUI Preview 14

David Ortinau

Preview 14 of .NET Multi-platform App UI (MAUI) is now available in Visual Studio 2022 17.2 Preview 2. This release includes a hefty volume of issue resolutions and completed features, and one new feature that will be a welcome addition for desktop developers: the MenuBar. While desktop app navigation and menus are often designed into the content window of many modern applications (think Teams left sidebar or Maps top tabs), there’s still a strong need for a traditional menu that resides at the top of the app window on Windows, and in the title bar on macOS.

Image menubar png

Menus may be expressed in XAML or in C# for any ContentPage currently hosted in Shell or a NavigationPage. Begin by adding a MenuBarItem to the page’s MenuBarItems collection, and add MenuFlyoutItem for direct children, or MenuFlyoutSubItem for containers of other MenuFlyoutItem.

    <MenuBarItem Text="File">
        <MenuFlyoutItem Text="Quit" Command="{Binding QuitCommand}"/>
    <MenuBarItem Text="Locations">
        <MenuFlyoutSubItem Text="Change Location">
            <MenuFlyoutItem Text="Boston, MA"/>
            <MenuFlyoutItem Text="Redmond, WA"/>
            <MenuFlyoutItem Text="St. Louis, MO"/>
        <MenuFlyoutItem Text="Add a Location" Command="{Binding AddLocationCommand}"/>
    <MenuBarItem Text="View">
        <MenuFlyoutItem Text="Refresh" Command="{Binding RefreshCommand}"/>
        <MenuFlyoutItem Text="Toggle Light/Dark Mode" Command="{Binding ToggleModeCommand}"/>

Additional Preview 14 highlights include:

  • Device and Essentials reconciliation, plus interfaces for Essentials APIs
  • Shell WinUI (#4501)
  • Image caching (#4515)
  • Native -> Platform renaming (#4599)
  • Shapes (#4472)
  • Use string for StrokeShape (#3256)
  • WebView cookies (#4419)
  • MenuBar (#4839)
  • RTL Windows (#4936)

Find more details in our release notes.

While combing through your feedback in previous .NET MAUI releases we have noticed a theme of questions such as “how do I add a FilePicker”, “how do I get check the connectivity of my app”, and other such “essential” application tasks that aren’t specifically UI.

Beyond UI: Accessing Platform APIs

Within .NET MAUI is a set of APIs located in the Microsoft.Maui.Essentials namespace that unlock common features to bring that same efficiency to non-UI demands as to creating beautiful UI quickly. Originally a library in the Xamarin ecosystem, Essentials is now baked into .NET MAUI and is hosted in the very same dotnet/maui repository (in case you’re wondering where to log your valuable feedback). With it you can access such features as:

Accelerometer App Actions App Information
App Theme Barometer Battery
Clipboard Color Converters Compass
Connectivity Contacts Detect Shake
Display Info Device Info Email
File Picker File System Helpers Flashlight
Geocoding Geolocation Gyroscope
Haptic Feedback Launcher Magnetometer
MainThread Maps Media Picker
Open Browser Orientation Sensor Permissions
Phone Dialer Platform Extensions Preferences
Screenshot Secure Storage Share
SMS Text-to-Speech Unit Converters
Version Tracking Vibrate Web Authenticator

That’s a lot! Each API uses common pattern, so let’s focus on a few by way of introduction.

File Picker

Desktop platforms may often have a UI control named FilePicker or similar, but not all platforms do. Mobile platforms do not, but it’s still possible to perform the action from any UI element that takes an action such as a simple Button.

<Button Text="Select a File" Clicked="OnClicked" />

Now we can use the Maui.Essentials API to start the file picking process and handle the callback.

async void OnClicked(object sender, EventArgs args)
    var result = await PickAndShow(PickOptions.Default);

async Task<FileResult> PickAndShow(PickOptions options)
        var result = await FilePicker.PickAsync(options);
        if (result != null)
            Text = $"File Name: {result.FileName}";
            if (result.FileName.EndsWith("jpg", StringComparison.OrdinalIgnoreCase) ||
                result.FileName.EndsWith("png", StringComparison.OrdinalIgnoreCase))
                var stream = await result.OpenReadAsync();
                Image = ImageSource.FromStream(() => stream);

        return result;
    catch (Exception ex)
        // The user canceled or something went wrong

    return null;

The PickOptions conveniently provides options for configuring your file selection criteria such as file types with FilePickerFileType:

  • FilePickerFileType.Images
  • FilePickerFileType.Jpeg
  • FilePickerFileType.Pdf
  • FilePickerFileType.Png
  • FilePickerFileType.Videos


This is an important feature for mobile, but equally useful for desktop in order to handle both offline and online scenarios. In fact, if you have ever attempted to publish an app to the Apple App Store, you may have encountered this common rejection for not detection connectivity status prior to attempting a network call.

var current = Connectivity.NetworkAccess;

if (current == NetworkAccess.Internet)
    // able to connect, do API call
    // unable to connect, alert user

Some services require a bit of configuration per platform. In this case iOS, macOS, and Windows don’t require anything, but Android needs a simple permission added to the “AndroidManifest.xml” which you can find in the Platforms/Android path of your .NET MAUI solution.

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

Read the docs for additional information.

Get Started Today

.NET MAUI Preview 14 is bundled with Visual Studio 17.2 Preview 2 which is also available today with the latest productivity improvements for .NET MAUI development. If you are using Visual Studio 2022 17.1 Preview 2 or newer, you can upgrade to 17.2 Preview 2.

If you are upgrading from .NET MAUI preview 10 or earlier, or have been using maui-check we recommend starting from a clean slate by uninstalling all .NET 6 previews and Visual Studio 2022 previews.

Starting from scratch? Install this Visual Studio 2022 Preview (17.2 Preview 2) and confirm .NET MAUI (preview) is checked under the “Mobile Development with .NET workload”.

Ready? Open Visual Studio 2022 and create a new project. Search for and select .NET MAUI.

Preview 14 release notes are on GitHub. For additional information about getting started with .NET MAUI, refer to our documentation, and the migration tip sheet for a list of changes to adopt when upgrading projects.

For a look at what is coming in future .NET 6 releases, visit our product roadmap, and for a status of feature completeness visit our status wiki.

Feedback Welcome

We’d love to hear from you! Please let us know about your experiences using .NET MAUI by completing a short survey.


Discussion is closed. Login to edit/delete existing comments.

  • Chuck Giddens 0

    Do you have any resources/guidance on how to setup the Apple Dev Profiles so that I can deploy to my iPhone for development? All of the iOS property editors have disappeared.


  • David Jack 0

    Hello, David Ortinau I’m not an expert in this filed. But I can say I learned something from this article.
    For sharing this article.

  • BILAL Rasheed 0

    The app looks to be having some issues with its Hot Reload features in this latest release. What are the chances? When you attempt to login to a secure area, you will be told that this request is forbidden: Authentication Error. My Apple Developer account is active until early June, and I began seeing this with Preview 14 of Xcode.”I have Xcode 7.3 and earlier, and I can continue developing with my Apple ID.” Any ideas?(This details has already been submitted for a related issue: MAUI Blazor hybrid apps will crash on iOS / iPad OS / macOS #3980).

  • Vaibhav Joshi 0

    Question for David Ortinau please:

    We are developing an app and have hit a road block. We are using “Blazor WebView” and need to save files (jpeg, png, mp4) to disk and display them.

    When will this be addressed?


    • Daniel RothMicrosoft employee 0

      Hi Vaibhav. I think that should already be possible today. Is there a GitHub issue with details on the issue you are seeing that we could take a look at?

  • rishabh kumar 0

    How can i Assess that MAUI weather app( github url?). I want to see Menu item implementation on both side.

  • Mesum Hash 0

    When is the support for Linux apps and app development on Linux coming?

  • John Ureke 0

    It’s hilariously amusing that Microsoft has renamed Beta to Preview. Why test software internally when the users who pay for it can get completely frustrated trying to use it?

  • Fk Bey 0

    .net as always the best language for me. It s really simple and powerfull.On the other hand,I want to ask,
    is there any performance improvemenets ? Does maui uses Xamarin platform? Or Maui deviced a new way ? Thank you.

  • Leonardo Ferreira 0

    In the file picker code demo, there’s a “async void OnClicked(……” and I was always told that such code causes cancer and other nasty stuff, but im new to MAUI, so is that a OK approach here, or that’s just a silly demo mistake that I should overlook?

  • RD Laumas 0

    Did you plan to let tabs be closable on windows shell in the following releases?


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