Recurring "No parameterless constructor" errors after package updates across various CommunityToolkit.Maui components #2669
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Hello Community Toolkit team, I'm consistently encountering compatibility issues when updating packages in my .NET MAUI applications that use CommunityToolkit.Maui. The error message typically appears as:
This issue isn't isolated to one specific control - I've experienced it with different components at different times, including:
The pattern seems to be:
Questions:
Workarounds I've found:
This recurring issue creates significant friction during maintenance and updates. Any guidance or improvements to make version transitions smoother would be greatly appreciated. Environment:
Thank you for your work on this excellent toolkit! |
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Replies: 4 comments 18 replies
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To help me understand this a little better from your section "the pattern seems to be" are you only updating one of the items? I suspect this comes back to manifests and specific TFMs. We saw this issue a lot when .NET 9 preview came out. Do you also have a global.json file that states which .NET version to be using and whether you can use newer versions? |
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Also many other peoples i think facing same issues when they are upgrading their packages. do i also need to move my converters to backend of page instead xaml? |
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here you can find my stack trace: 2025-05-26 11:46:58.476 [2478:841756] Unhandled managed exception: Position 15:14. No parameterless constructor defined for type 'CommunityToolkit.Maui.Converters.InvertedBoolConverter'. (Microsoft.Maui.Controls.Xaml.XamlParseException) |
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Please follow the For reference, here are the requirements for v11.2.0: https://github.com/CommunityToolkit/Maui/releases/tag/11.2.0 We will continue to post the requirements for each version of .NET MAUI Community Toolkit in the Release Notes for each new version RequirementsThe following tools are now required for CommunityToolkit.Maui:
global.json
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Please follow the
Requirements
section in the Release Notes of each version ofCommunityToolkit.Maui
.For reference, here are the requirements for v11.2.0: https://github.com/CommunityToolkit/Maui/releases/tag/11.2.0
We will continue to post the requirements for each version of .NET MAUI Community Toolkit in the Release Notes for each new version
Requirements
The following tools are now required for CommunityToolkit.Maui: