Show control hierarchy in the WinForms designer
You need to use the Document Outline
View > Other Windows > Document Outline
Or via hotkey
Ctl + ALT + T
Click on View > Other Windows > Document Outline in Visual Studio.
That should show the control hierarchy.
Visual Style Builder for UI Customization - Download this tool and use it...
Another tool is present which is "Control Spy Tool for Easier Development"
You will find the solution easily..