Developer technologies | Universal Windows Platform (UWP)
A Microsoft platform for building and publishing apps for Windows devices.
global::Windows.UI.Xaml.Markup.IXamlType GetXamlTypeByName throws exception when trying to load Microsoft.UI.Xaml.Controls.StylesVersion
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oregonduckman
6
Reputation points
During startup the app I am working on throws a System.IO.FileNotFoundException when global::Windows.UI.Xaml.Markup.IXamlType GetXamlTypeByName is called with the typeName = "Microsoft.UI.Xaml.Controls.StylesVersion". Any help on this would be appreciated.
Developer technologies | Universal Windows Platform (UWP)
Developer technologies | C#
Developer technologies | C#
An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.
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Nico Zhu (Shanghai Wicresoft Co,.Ltd.) 12,871 Reputation points2022-03-29T04:36:51.063+00:00 The exception looks you missed some assembly, can you share a repro sample or code where throw exception ?
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oregonduckman 6 Reputation points
2022-03-29T17:46:52.407+00:00 What would the debugging process be if I wanted to do this myself. Here are the declarations in the offending XAML file:
x:Class="SomeApp.Views.TreeViewPage" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:winui="using:Microsoft.UI.Xaml.Controls" xmlns:templateSelectors="using:SomaApp" xmlns:controls="using:Microsoft.Toolkit.Uwp.UI.Controls" xmlns:model="using:SomeApp.Core" Style="{StaticResource PageStyle}" mc:Ignorable="d"> -
Nico Zhu (Shanghai Wicresoft Co,.Ltd.) 12,871 Reputation points
2022-03-30T01:12:06.213+00:00 Well, can you try to remove
Style="{StaticResource PageStyle}"for testing? -
Nico Zhu (Shanghai Wicresoft Co,.Ltd.) 12,871 Reputation points
2022-03-30T06:05:36.98+00:00 I found you have used winui2, have you add
XamlControlsResourcesin your App.xaml file? -
oregonduckman 6 Reputation points
2022-03-30T15:36:39.107+00:00 Is there a direct method of debugging these kinds of problems? Removing Style="{StaticResource PageStyle}" had no effect and my App.xaml already included XamlControlsResources as follows:
<Application
x:Class="SomeApp.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
><Application.Resources> <ResourceDictionary> <ResourceDictionary.MergedDictionaries> <XamlControlsResources xmlns="using:Microsoft.UI.Xaml.Controls" /> <ResourceDictionary Source="/Styles/_Colors.xaml" /> <ResourceDictionary Source="/Styles/_FontSizes.xaml" /> <ResourceDictionary Source="/Styles/_Thickness.xaml" /> <ResourceDictionary Source="/Styles/TextBlock.xaml" /> <ResourceDictionary Source="/Styles/Page.xaml"/> </ResourceDictionary.MergedDictionaries> </ResourceDictionary> </Application.Resources></Application>
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Nico Zhu (Shanghai Wicresoft Co,.Ltd.) 12,871 Reputation points
2022-03-31T01:10:25.923+00:00 it's hard to reproduce your problem with above code, can you provide reproduce sample, I will test base on that.
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oregonduckman 6 Reputation points
2022-03-31T17:13:30.443+00:00 Since I am pretty new to UWP/XAML I am interested learning how to debug this stuff myself. Can you point me to some MS docs that explain options for debugging XAML bugs that cause exceptions like the one I am seeing in my app?
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Nico Zhu (Shanghai Wicresoft Co,.Ltd.) 12,871 Reputation points
2022-04-01T00:53:20.17+00:00 Sure, please refer to XAML overview here.
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