Setting the content of Tool to an existing Control

[koosha72]

Is there any way to set the Content of a Tool to an element created in code?

I tried to use this:
SolutionExplorer.Content = new TextBlock() { Text = "TEST" };

But I got this exception:
System.ArgumentException: 'Unexpected content Avalonia.Controls.TextBlock (Parameter 'templateContent')'

So I tried to set it using template functions like this:
SolutionExplorer.Content = new FuncTemplate<TextBlock>(() => new TextBlock() { Text = "TEST" });

But still got this error:
System.ArgumentException: 'Unexpected content Avalonia.Controls.Templates.FuncTemplate'1[Avalonia.Controls.TextBlock] (Parameter 'templateContent')'

Is it even possible to this without using a ViewLocator and MVVM?

[IZIDIA]

try this:

var newControl = new TextBlock();
SolutionExplorer.Content = new Func<IServiceProvider, object>(_ => new TemplateResult<Control>(newControl , null!));

I got it on the most current version from 01.09.23

[artizzq]

And how do we refresh the Tool content to see it? Visually nothing changes until I resize or move the Tool.