iOS error: Type telerikGauges:GaugeLinearAxis not found in xmlns...

[Paul]

Xamarin.Forms.Xaml.XamlParseException: Position 12:8. Type telerikGauges:GaugeLinearAxis not found in xmlns clr-namespace:Telerik.XamarinForms.DataVisualization.Gauges;assembly=Telerik.XamarinForms.DataVisualization

 

We are able to reproduce this on 2 machines now with 2 completely different Xamarin projects. The project runs normally and displays the gauge on Android, that error is only thrown with iOS.

[Paul]

This is even reproducible if you use the Telerik Xamarin Forms project wizard, you will only be able to run on Android

[Paul]

We also just tested this on Xamarin Studio on a Mac and still produced the exact same error

 

pls help

[Petar Marchev]

Hi,

I was able to reproduce the described runtime exception.

One way to resolve this is to give an x:Name to the gauge:

<telerikGauges:RadRadialGauge x:Name="gauge1">

Another way to go here is to access anything in the DataVisualization assembly so that it gets loaded. I suspect that the reason for this exception is the .Net mechanism of lazy loading of dlls and the xaml parser cannot find the proper type unless an x:Name is given, or a prior initialization was done.

Let us know how it goes.

Regards,
Petar Marchev
Telerik by Progress

[Petar Marchev]

Hello,

I have just learned that there is one more option - you can turn on XAML Compilation. You can either set the XamlCompilation attribute for the whole portable assembly:

[assembly: Xamarin.Forms.Xaml.XamlCompilation(Xamarin.Forms.Xaml.XamlCompilationOptions.Compile)]

Or you can only mark only the page with the gauge:

[Xamarin.Forms.Xaml.XamlCompilation(Xamarin.Forms.Xaml.XamlCompilationOptions.Compile)]

We are probably going to include this by default in our Wizard, so that this issue does not occur.

Regards,
Petar Marchev
Telerik by Progress

[Paul]

That makes sense since I noticed the gauge will load on the 2nd or 3rd pages loaded but not the initial page.

 

Thanks for the fix