How to pass HttpContext.Current to function?

ou can either pass the context into the function or use HttpContext.Current to retrieve the current context.

Pass it in

public static List<SellsLive> SearchFunc(SellsLiveSearch Per, HttpContext context)
{
    context.Response.SetCookie(cookie);
}

And call it like this:

SearchFunc(Per, this.HttpContext);

Get Current context

public static List<SellsLive> SearchFunc(SellsLiveSearch Per)
{
    HttpContext context = HttpContext.Current;
    context.Response.SetCookie(cookie);
    //etc
}

Of course, this way will only work if the function is running on the correct thread.