Hosting PDFViewCtrl


I am trying add an image which user chooses from the system ,to the pdf page in WinRT. Though am able to do that . I want to display the user ,the picture he has selected . And he can also drag the image to the desired position. Later i can get the postion of the picture and use element builder and matrix2D to write it on pdf. But the PdfCtrl is hosted on a Border element (only one element can be inside the ctrl),when i try to host the viewctrl in grid or some other element it throws an error .

Can please help on this topic .