[Bug]: Wrong instruction in Build MCP #223

Describe the bug

This is not valid in for latest DevTools, they cannot co-exist

Content from : Avalonia DevTools — Setup & Migration

Step 5 — Configure Program.cs

Ensure .WithDeveloperTools() is called in the BuildAvaloniaApp() method in Program.cs. Add it if missing:

public static AppBuilder BuildAvaloniaApp()
    => AppBuilder.Configure<App>()
        .UsePlatformDetect()
        .WithDeveloperTools()
        .LogToTrace();

Step 6 — Configure App.axaml.cs

Ensure AttachDeveloperTools() is called in the Initialize() method of App.axaml.cs, inside an #if DEBUG block, after AvaloniaXamlLoader.Load(this);. Add it if missing:

public override void Initialize()
{
    AvaloniaXamlLoader.Load(this);
#if DEBUG
    this.AttachDeveloperTools();
#endif
}

Both Step 5 and Step 6 are required. .WithDeveloperTools() enables the DevTools infrastructure; AttachDeveloperTools() connects to the DevTools instance.

To Reproduce

Product(s)

DevTools

Platform

Windows

License Tier

Community

Avalonia version

12.0.2

Tool/Control Version

No response

Relevant log output

Additional context

No response