How would I make a static class in ASP.NET webforms that redirects the User to a specific page if member is not active? (c#)

I can't figure out how to turn the following code into a static class for use in all my pages.

var valDRecord = oe.account_profiles.Where(y => y.membership_number == User.Identity.Name).First();
if (valDRecord.active == false)
        {
            Response.Redirect("profileUpdate.aspx");
        }

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This is the code in my class:
Can't figure out how to get the user.Identity.Name to work.

public class notActive
{
   public static void redirect()
    {
        AMEMEntities2 h = new AMEMEntities2();

        var valDRecord = h.account_profiles.Where(y => y.membership_number == User.Identity.Name).First();
        if (valDRecord.active == false)
        {
           HttpContext.Current.Response.Redirect("profileUpdate.aspx");
        }

    }

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