How to use GameContextWinforms?

I try to use xenko engine for winform intergration.

so, I follow step below,

1. create project (window platform).
2. open visual studio and modify code.
3. var context = SiliconStudio.Xenko.Games.GameContextWinforms(myPanelControl);
   using(var game = new Game())
   {
   game.Run(context);
   }

it seems be works well but, xenko renderer not fit the panel size.

I set my panel size to 500x500, but xenko render area is oversized.

am i use GameContextWinforms to wrong?

best regards.

it appears you have not use the width,height overloads

public GameContextWinforms(Control control, int requestedWidth = 0, int requestedHeight = 0, bool isUserManagingRun = false)
: base(control ?? CreateForm(), requestedWidth, requestedHeight)
{
ContextType = AppContextType.Desktop;
IsUserManagingRun = isUserManagingRun;
}

I have same question. How to render game on custom UserControl in custom WinForm?