How to change the icon of a C# WinForms exe, in TaskManager

Question

I've already set the icon in the Project Properties, and the FormControl Icon. I've thus got my icon ( .ico file) in:

• The TaskBar.
• The TaskTray.
• The top-left of the Form.
• In Windows Explorer, if I navigate to the exe on disk.

But I've still got the default icon in TaskManager:

How do I fix that, in my C# WinForm? (ie make the icon in the red circle look unique, like VS, Excel, Firefox, etc. all do)

(There are a few answers that appear to address this in C++, but nothing in C#-land, or WinForms.)

Answer 1

Dammit. It turns out the answer is "close and re-open TaskManager". It must have cached the icon.

Restarting the exe didn't help, but restarting TaskManager sorted it.