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Upgrade .NET MAUI Workshop to .NET 10#152

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jamesmontemagno merged 12 commits intomainfrom
copilot/update-to-dotnet-10
Dec 22, 2025
Merged

Upgrade .NET MAUI Workshop to .NET 10#152
jamesmontemagno merged 12 commits intomainfrom
copilot/update-to-dotnet-10

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Copilot AI commented Nov 17, 2025 •
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Upgrade .NET MAUI Workshop to .NET 10

Based on the official .NET MAUI 9 to 10 upgrade instructions, all tasks have been completed:

  • Update all .csproj files to use net10.0 target framework monikers (TFMs)
    • Update Part 1 - Displaying Data project
    • Update Part 2 - MVVM project
    • Update Part 3 - Navigation project
    • Update Part 4 - Platform Features project
    • Update Part 5 - CollectionView project
    • Update Part 6 - AppThemes project
    • Update Finish project
    • Update Community Modules XAML projects (5 projects)
  • Update Directory.Build.props file with net10.0 platform versions
  • Update Directory.Build.targets file with net10.0 references
  • Update documentation files to reference .NET 10, Visual Studio 2026, and VS Code with C# Dev Kit
  • Replace deprecated DisplayAlert with DisplayAlertAsync in all projects
  • Update Microsoft.Extensions.Logging.Debug to 10.0.-
  • Update CommunityToolkit.Mvvm to 8.4.0
  • Add LangVersion preview to all .csproj files to support MVVMTK0045
  • Update all ViewModels to use partial property syntax (MVVM Toolkit 8.4.0 style)
  • Update all README documentation to reflect new partial property syntax
  • Fix README to preserve manual implementation examples (showing before/after)
  • Verify projects can build with .NET 10 SDK
  • Run code review and security checks

Summary

All 12 .NET MAUI projects have been successfully updated from .NET 9 to .NET 10:

  • Changed target frameworks from net9.0-* to net10.0-* in all .csproj files
  • Updated platform-specific conditions in Directory.Build.props
  • Updated documentation to reference .NET 10, Visual Studio 2026, and VS Code with C# Dev Kit
  • Replaced all deprecated DisplayAlert calls with DisplayAlertAsync (18 ViewModels updated)
  • Updated Microsoft.Extensions.Logging.Debug from 9.0.- to 10.0.-
  • Updated CommunityToolkit.Mvvm from 8.3.2 to 8.4.0
  • Added <LangVersion>preview</LangVersion> to all 12 .csproj files for C# 14 preview features support
  • Updated all ViewModels to use the new partial property syntax:
    • Changed from [ObservableProperty] bool isBusy; to [ObservableProperty] public partial bool IsBusy { get; set; }
    • Updated BaseViewModel in all 12 projects
    • Updated MonkeyDetailsViewModel in all projects with the property
    • Updated MonkeysViewModel in projects with IsRefreshing property
  • Updated all README documentation:
    • MVVM Toolkit sections show the new partial property syntax
    • Manual implementation sections (showing INotifyPropertyChanged before using the toolkit) preserve the original field-based syntax for educational purposes
  • Verified builds succeed with .NET 10 SDK with no warnings or errors
Original prompt

This section details on the original issue you should resolve

<issue_title>Update to .NET 10</issue_title>
<issue_description>Update all projects based on https://github.com/github/awesome-copilot/blob/main/instructions/dotnet-maui-9-to-dotnet-maui-10-upgrade.instructions.md</issue_description>

<agent_instructions>Ensure you follow instructiosn: https://github.com/github/awesome-copilot/blob/main/instructions/dotnet-maui-9-to-dotnet-maui-10-upgrade.instructions.md</agent_instructions>

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@jamesmontemagno
Update all projects to .NET 10
99c2dc1 
Co-authored-by: jamesmontemagno <1676321+jamesmontemagno@users.noreply.github.com>
Copilot AI changed the title [WIP] Update all projects to .NET 10 Upgrade .NET MAUI Workshop to .NET 10 Nov 17, 2025
@jamesmontemagno
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jamesmontemagno commented Nov 17, 2025

@copilot We will want to tell people they will need .NET 10 and Visual Studio 2026 or Visual Studio Code with the C# Dev Kit. Visual Studio 2022 isn't supported with .NET 10

Also https://learn.microsoft.com/en-us/dotnet/maui/whats-new/dotnet-10?view=net-maui-10.0 for anythign deprecated we need to rmvoe at all

@jamesmontemagno
Update to Visual Studio 2026 and replace deprecated DisplayAlert with…
722f1af 
… DisplayAlertAsync

Co-authored-by: jamesmontemagno <1676321+jamesmontemagno@users.noreply.github.com>
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Copilot AI commented Nov 17, 2025

@copilot We will want to tell people they will need .NET 10 and Visual Studio 2026 or Visual Studio Code with the C# Dev Kit. Visual Studio 2022 isn't supported with .NET 10

Also https://learn.micros...

Updated in commit 722f1af:

  • Changed README to reference Visual Studio 2026 and VS Code with C# Dev Kit
  • Replaced all deprecated DisplayAlert calls with DisplayAlertAsync across all 18 ViewModels
  • Verified build succeeds with no warnings

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jamesmontemagno commented Nov 17, 2025

@copilot let's update the logging to 10.0.-

Also update the community toolkit to 8.4.0, but take into consideration https://learn.microsoft.com/en-us/dotnet/communitytoolkit/mvvm/generators/errors/mvvmtk0045 and that we need to set LangVersion to preview in the csprj

@jamesmontemagno
Update logging to 10.0, CommunityToolkit.Mvvm to 8.4.0, and add LangV…
7ea2204 
…ersion preview

Co-authored-by: jamesmontemagno <1676321+jamesmontemagno@users.noreply.github.com>
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Copilot AI commented Nov 17, 2025

@copilot let's update the logging to 10.0.-

Also update the community toolkit to 8.4.0, but take into consideration https://learn.microsoft.com/en-us/dotnet/communitytoolkit/mvvm/generators/erro...

Updated in commit 7ea2204:

  • Updated Microsoft.Extensions.Logging.Debug from 9.0.- to 10.0.-
  • Updated CommunityToolkit.Mvvm from 8.3.2 to 8.4.0
  • Added <LangVersion>preview</LangVersion> to all 12 .csproj files to support C# 14 preview features and avoid MVVMTK0045 warnings
  • Verified build succeeds with no warnings

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jamesmontemagno commented Nov 17, 2025

@copilot We will want to update all viewmodels and all documentation to use the new mvvm toolkit style in 8.4.0

FROM:

[ObservableProperty]
string title;

To:
[ObservableProperty]
public partial string Title { get; set; }

do thi sin all projects and update all readmes

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Copilot AI commented Nov 17, 2025

@copilot We will want to update all viewmodels and all documentation to use the new mvvm toolkit style in 8.4.0

FROM:...

Updated in commit 982c240:

  • Updated all ViewModels (31 files) to use the new MVVM Toolkit 8.4.0 partial property syntax
  • Changed from [ObservableProperty] string title; to [ObservableProperty] public partial string Title { get; set; }
  • Updated BaseViewModel in all 12 projects
  • Updated MonkeyDetailsViewModel and MonkeysViewModel across all projects
  • Updated all README files (English, Chinese Simplified, Chinese Traditional) with new syntax examples and explanations of partial properties
  • Updated generated code examples to show C# 14's field keyword usage
  • Verified build succeeds with no warnings or errors

jamesmontemagno
jamesmontemagno reviewed Nov 17, 2025
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Comment thread Part 2 - MVVM/README.zh-cn.md
field = value;
OnPropertyChanged();
// Also raise the IsNotBusy property changed
OnPropertyChanged(nameof(IsNotBusy));
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@copilot dont' change the ones thatw e have today taht aren't using [ObservableProperty] for in the readme, we are showing the before/after using the toolkit

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Copilot AI Nov 17, 2025

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Fixed in commit 494d9f5. Reverted the manual implementation section (showing bool isBusy; and string title;) in both Chinese README files to preserve the before/after examples that demonstrate INotifyPropertyChanged before introducing the MVVM Toolkit.

@jamesmontemagno
Fix README: Keep manual implementation examples with field syntax
494d9f5 
Co-authored-by: jamesmontemagno <1676321+jamesmontemagno@users.noreply.github.com>
@jamesmontemagno
Change CardView base class from Frame to Border
0adb1ad 
CardView now inherits from Border instead of Frame, enabling use of Border-specific styling and features. This may affect the appearance and layout of CardView components in the application.
@jamesmontemagno
Merge branch 'copilot/update-to-dotnet-10' of https://github.com/dotn…
f625ca8 
…et-presentations/dotnet-maui-workshop into copilot/update-to-dotnet-10
@jamesmontemagno
🔧 Refactor IsBusy property in BaseViewModel
8e4d7e3 
- Update getter to use `isBusy` instead of `field`
- Ensure setter updates `isBusy` and raises PropertyChanged events
@jamesmontemagno jamesmontemagno marked this pull request as ready for review November 18, 2025 01:01
@jamesmontemagno jamesmontemagno merged commit d5c7973 into main Dec 22, 2025
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Update to .NET 10

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