CustomDataTemplate w/UserControl does not function

[DBenS]

The Basic DataTemplate Sample - Approach 3 (Place a UserControl inside a Data Template) is not working.

Describe the bug

When set in a project called "CustomDataTemplate", I have an error on the "view" statement of the MainWindow.axaml:

• Unable to resolve type PersonView from namespace using:CustomDataTemplate.Views Line 82, position 6.

• Typos in the docs

• Missing information

• Misleading or wrong information

• Outdated links

• Outdated or not working source code

Sample affected

https://github.com/AvaloniaUI/Avalonia.Samples/tree/main/src/Avalonia.Samples/DataTemplates/BasicDataTemplateSample#approach-3-place-a-usercontrol-inside-a-datatemplate

Screenshots

[timunie]

@DBenS it works for me without any change. Did you run it from source code or from your own project? Does the sample compile and run without an error?

Tip

Make sure you have setup the xml-namespace at the root node. xmlns:view="using:BasicDataTemplateSample.Views"

Note

The editor needs to have a fresh build after adding a new View, otherwise it can't find it and then you get this error.

[timunie]

need a sample to continue

[DBenS]

I just followed the code listed in
https://github.com/AvaloniaUI/Avalonia.Samples/tree/main/src/Avalonia.Samples/DataTemplates/BasicDataTemplateSample

... and I'm having a compiling issue:
Avalonia error AVLN:0004: Unable to resolve type PersonView from namespace using:CustomDataTemplate.Views Line 82, position 6.

I'm sorry for taking so much time to answer you, and thank you for your support.

Custom DataTemplate in a Control.zip

[timunie]

Now I see. You have a mistake in your namespace for some reason. Maybe due to added PersonView in the wrong location and moved into the correct folder afterwards. Namespaces don't cover that automatically.

In PersonView.axaml.cs

using Avalonia;
using Avalonia.Controls;
using Avalonia.Markup.Xaml;

- namespace CustomDataTemplate;
+ namespace CustomDataTemplate.Views;

[ ... ]

In PersonView.axaml

<UserControl xmlns="https://github.com/avaloniaui"
             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"
-            x:Class="CustomDataTemplate.PersonView"
+            x:Class="CustomDataTemplate.Views.PersonView"
             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"            
             xmlns:model="using:CustomDataTemplate.Models" 
             xmlns:vm="using:CustomDataTemplate.ViewModels"
             x:CompileBindings="True" 
             x:DataType="model:Person">

[ ... ]

[DBenS]

You are GREAT @timunie !
Thank you very much!