Using x:Uid in the ContentDialog main properties produces a compilation error

[ArchieCoder]

Current behavior

I have this error:

ContentDialog1_4b00c2cae815e453e645ca862e00c968.cs(74,6,74,6): error CS1002: ; expected

when I use x:Uid="EngineeringPropertySerialNumbersDialog" in a ContentDialog main properties.

Moving this x:Uid to a Page control works.

Expected behavior

No compilation error.

How to reproduce it (as minimally and precisely as possible)

AppUid.zip

Workaround

No response

Works on UWP/WinUI

No

Environment

No response

NuGet package version(s)

5.4.5

Affected platforms

Skia (WPF), Skia (Linux X11), Skia (macOS), Windows (WinAppSDK)

IDE

Visual Studio 2022

IDE version

No response

Relevant plugins

No response

Anything else we need to know?

No response

[ArchieCoder]

@jeromelaban (As discussed in Discord) A sample app is provided above. FYI, it is not a blocker since I put my code in code behind.

[cengelha]

I have the same issue. I don't know what was already said on Discord but I can add that this happens for Uno.Sdk 5.3.99 and up (5.3.96 works fine) and the generated code looks like this:

Without x:Uid

base.Content = 
...
.GenericApply(__that, __nameScope, ((c1, __that, __nameScope) => 
{
	global::Uno.UI.FrameworkElementHelper.SetBaseUri(c1, __baseUri_ContentDialog1_a00c984faab7524673d06862ec9846d0, "file:///D:/source/repos/cengelha//Presentation/Dialogs/ContentDialog1.xaml", 13, 4);
	c1.CreationComplete();
}
))
;

this
.GenericApply(__that, __nameScope, ((c2, __that, __nameScope) => 
{
	// Source ..\..\..\..\Presentation\Dialogs\ContentDialog1.xaml (Line 1:2)
	
	// WARNING Property c2.base does not exist on {http://schemas.microsoft.com/winfx/2006/xaml/presentation}ContentDialog, the namespace is http://www.w3.org/XML/1998/namespace. This error was considered irrelevant by the XamlFileGenerator
	c2.DefaultButton = global::Microsoft.UI.Xaml.Controls.ContentDialogButton.Close;
	c2.Title = @"TITLE";
	c2.PrimaryButtonText = "Button1";
	c2.SecondaryButtonText = "Button2";
}
))
...

With x:Uid

base.Content = 
...
.GenericApply(__that, __nameScope, ((c6, __that, __nameScope) => 
{
	global::Uno.UI.FrameworkElementHelper.SetBaseUri(c6, __baseUri_ContentDialog1_5b96bc6f2fa933199356f7b36a0c5f57, "file:///D:/source/repos/cengelha//Presentation/Dialogs/ContentDialog1.xaml", 21, 4);
	c6.CreationComplete();
}
))
Title = global::Uno.UI.Helpers.MarkupHelper.GetResourceStringForXUid("ContentDialog", "ContentDialog1/Title");
SecondaryButtonText = global::Uno.UI.Helpers.MarkupHelper.GetResourceStringForXUid("ContentDialog", "ContentDialog1/SecondaryButtonText");
PrimaryButtonText = global::Uno.UI.Helpers.MarkupHelper.GetResourceStringForXUid("ContentDialog", "ContentDialog1/PrimaryButtonText");
CloseButtonText = global::Uno.UI.Helpers.MarkupHelper.GetResourceStringForXUid("ContentDialog", "ContentDialog1/CloseButtonText");
;

this
.GenericApply(__that, __nameScope, ((c7, __that, __nameScope) => 
{
	// Source ..\..\..\..\Presentation\Dialogs\ContentDialog1.xaml (Line 2:2)

	// WARNING Property c7.base does not exist on {http://schemas.microsoft.com/winfx/2006/xaml/presentation}ContentDialog, the namespace is http://www.w3.org/XML/1998/namespace. This error was considered irrelevant by the XamlFileGenerator
	c7.DefaultButton = global::Microsoft.UI.Xaml.Controls.ContentDialogButton.Close;
}
))
...

[ArchieCoder]

@cengelha FYI, I was just reporting the bug via discord. What you provided above is great, you went beyond of what I provided. This will help the Uno team. Thanks.

[cengelha]

Thanks for letting me know!

At Uno team: It may also worth mentioning that it only happens if there is any custom content as otherwise the base.Content =is not there and therefore cannot have a missing ; and produce the compiler error