Hi,
We have a one user licence for a pdf software.
I would like to create a web page which only allows one user at a time to open a .pdf file
I guess I have to program this into the page. For example user one opens the .pdf file and then a sql server table is updated. Then a second user can not open the .pdf file because there is a value in the table. And when the first user finishes with the .pdf then the second user can open it.

What do you think please?
Thanks