[iOS 26.0.1] No parameterless constructor defined for type 'Syncfusion.Maui.Toolkit.Expander.SfExpander'

[Jakar510]

Description

No parameterless constructor defined for type 'Syncfusion.Maui.Toolkit.Expander.SfExpander'

Steps to Reproduce

Add SfExpander to a page, try to run on iOS.

.NET Version

.NET 9.0

Version with bug

1.0.7

Is this a regression from previous behavior?

Not sure, haven't tested other versions

Last Known Working Version

1.0.6

Affected platforms

iOS

Affected Platform Versions

26.0.1

Have you found a workaround?

No response

Relevant log output

[Jakar510]

WORKAROUND

Adding this to the csproj made it work.

	<ItemGroup>
		<TrimmerRootAssembly Include="Syncfusion.Maui.Toolkit" />
	</ItemGroup>

[FarjanaParveen]

Hi @Jakar510,

Using the details you provided, we created a new .NET 9 sample with version 26.0.1, added an Expander to a ContentPage, and ran the app in Release mode on iOS. We could not reproduce the issue.

We also instantiated the Expander using Activator.CreateInstance and assigned it to the ContentPage’s Content as shown below, but the issue still did not occur.

var t = typeof(Syncfusion.Maui.Toolkit.Expander.SfExpander);
var expander = Activator.CreateInstance(t);
this.Content = expander as SfExpander;

We’ve attached a video demo for your reference. If you’re still encountering the problem, please share a minimal runnable sample that reproduces it. This will help us investigate further and provide an appropriate solution.

https://github.com/user-attachments/assets/71c03e29-745f-4279-81cf-1ccc44f1848e
Expander_Sample.zip

Regards,
Farjana Parveen A