Set Property Value on Master Page from Content Page

Question

I need to pass data to a variable in my master page each time a page is loaded.

I have a string[] of RequiredRoles that I set on each content page defining what role

Answer 1

Create a property in your master page and you access it from content page:

Master page:

public partial class BasePage : System.Web.UI.MasterPage
{
    private string[] _RequiredRoles = null;

    public string[] RequiredRoles
    {
        get { return _RequiredRoles; }
        set { _RequiredRoles = value; }
    }
}

Content Page:

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load()
    {
        Master.RequiredRoles = new string[] { /*set appropriate roles*/ };
    }
}