I agree with JuneTheSecond. I have made an application for a client who want
administrator to be able to modify the drawing and user not to be able to
modify it. So i have created an application with the VDC control and with
the viewer control. If the user log in the application as administrator i
create a windowform with the VDC in it and feel the SRC property. If the
user log in the application as simple user, i create a windowform with the
ViewerControl in it and fill also the SRC property so the file cannot be
modified by him.