Question

I have following logic in Admin screen. I need similar logic in Logs screen also. Hence I am planning to move this logic into base page. In base page, how do I recognize the current page? (How do I distinguish between Admin screen and Logs screen?).

Based on the page the value retrieved from the config is different.

What are the different ways to achieve this? What is the best way out of these approaches?

        //Admin Screen
        List<string> authorizedRoles = new List<string>((ConfigurationManager.AppSettings["AdminScreenRoles"]).Split(','))
        if (!authorizedRoles.Contains(userRole))
        {
            Response.Redirect("UnauthorizedPage.aspx");
        }

    //Logs Screen   
        List<string> authorizedRoles = new List<string>((ConfigurationManager.AppSettings["LogsScreenRoles"]).Split(','))
        if (!authorizedRoles.Contains(userRole))
        {
            Response.Redirect("UnauthorizedPage.aspx");
        }

Answer 1

Don’t put code in base that recognize the class that inherit it. Add an abstract property that the child will have to override.
In base:

public abstract string AppSettingsRolesName { get; }

List<string> authorizedRoles = new List<string>((ConfigurationManager.AppSettings[AppSettingsRolesName]).Split(','))
if (!authorizedRoles.Contains(userRole))
{
    Response.Redirect("UnauthorizedPage.aspx");
}

In Logs:

public override string AppSettingsRolesName 
{
   get { return "LogsScreenRoles"; }
}

In Admin:

public override string AppSettingsRolesName 
{
   get { return "AdminScreenRoles"; }
}