I have a Blazor server-side app, which simulates a windowing system. This uses the TelerikWindow component. Each child window is a separate component, inheriting from a WindowBase component and containing the code for the specific window.

The component that manages the windows has a collection of WindowParameter objects, which for simplicity can be considered as…

public ObservableCollection<WindowParameters> Windows { get; set; } = [];
public record WindowParameter(Type Type);

When the user opens a window, an entry is added to this collection, and is rendered like this…

@foreach (WindowParameters w in Windows) {
  <DynamicComponent Type="@w.Type" />
}

The real code has much more complexity, but I think this is enough to explain my question.

There are times when the window manager needs to pass some data to a specific window. However, it doesn’t have a list of the window components, so can’t do that directly. I’m trying to find a way of doing this.

I tried wrapping the foreach loop above in a <CascadingValue>, passing this as the value, but the cascading parameter in the window components was always null.

I thought of looping through the child components of the window manager, looking for components that inherit from WindowBase, but couldn’t find a way to do that.

Anyone able to help?