Any way to pass a parameter to a window in avalonia?

[IronEaterBeast]

I need to pass a parameter to a window in avalonia, but doing so causes the design view to break with the error:

System.Xaml.XamlException: Cannot compile Build method. Parameters mismatch. Type needs to have a parameterless ctor or a ctor with a single IServiceProvider argument. Or x:Arguments directive with matching arguments needs to be set.

The code like:

public partial class TestWindow: Window { public TestWindow(string mode="") { InitializeComponent(); } }

[timunie]

just add another parameterless constuctor:

public TestWindow(string mode="") : this()
{
    // do your stuff
}

public TestWindow() // maybe internal is enough, up to you to test
{ 
    InitializeComponent(); 
}

[maxkatz6]

Yes, otherwise there is no way for designer to create an instance of the type.