How to know that computer user use browser to visit websites by using http or https in c#?

public void Init(HttpApplication application)
{
    application.BeginRequest += new EventHandler(application_BeginRequest);
}

protected void application_BeginRequest(object sender, EventArgs e)
{
    HttpApplication application = ((HttpApplication)(sender));
    HttpRequest request = application.Request;

    if (request.Url.Schema == "http://" || "https://")
    {
         Response.Redirect(request.Url);
    }

}