Need Help: My Add-On Window Won’t Display Title Bar Text (WPF/XAML, NinjaTrader 8) Body:

Hi everyone,

I’m building an Add-On for NinjaTrader 8 from scratch — it’s called Command Terminal XL — and I can’t figure out why the title bar refuses to display the window’s title. Instead of showing the window name, I only get a thin orange strip with no text.

I’m using C# with WPF and XAML (confirmed NinjaTrader uses WPF), and everything I try still results in a blank title bar.

Here’s what’s happening:

  • The window opens correctly
  • The Add-On loads fine
  • The title bar is visible
  • But the actual title text never appears — it’s just an empty bar with an orange line
  • Even when I explicitly set Title="Command Terminal XL" in the XAML or set it programmatically in C#, the title bar stays blank

I’m assuming I’m either missing something simple in the window initialization or something in NinjaTrader’s styling/theme system is overriding it.

If anyone has run into this before — especially when creating custom Add-On windows — I’d really appreciate help.
How do I properly get the title text to display in a WPF Add-On window inside NinjaTrader?

Thanks in advance.

To assign the title, you must use the Caption property — neither Name nor Title.

1 Like