How to hide a div from code (c#)

Question

I have a div element on my page that I wish to show/hide based on a session value in my code-behind. How can I do this?

Answer 1

In the Html

.....BLAH......

In the code

public void Page_Load(object source, Event Args e)
{

   if(Session["Something"] == "ShowDiv")
      AssignUniqueId.Visible = true;
    else
      AssignUniqueID.Visible = false;
}