Unable to open storyboard file in Visual studio 2017

Hi I am opening .storyboard file in Visual Studio 2017(Connected to MAC machine via notwork). Storyboard file not opening and showing message in log
The iOS designer can only open layout files in an open project, because it requires access to project's resource files. \n\n File D:\MyData\iPhoneSplashScreen\iPhoneSplashScreen\ViewController1.storyboard does not appear to be in an open project.
How can I open storyboard file
Please see attached screenshot