Deleting project/pages/usercontrols from memory

Question

I have made a windows phone app, that unfortunately has some memory leak, because pages are not removed correctly. This was solved by using the answer:

Remove Pages wind

Answer 1

I think you can make the object singleton and you can clear the values of objects manually when accordingly. Please refer the link below https://msdn.microsoft.com/en-us/library/ff650316.aspx