How to store and validate anti xsrf token without showing in the cookie headers in ASP.NET with C#?

var requestCookie = Request.Cookies[AntiXsrfTokenKey];
          Guid requestCookieGuidValue;
          if (requestCookie != null && Guid.TryParse(requestCookie.Value, out requestCookieGuidValue))
          {
              // Use the Anti-XSRF token from the cookie
              _antiXsrfTokenValue = requestCookie.Value;
              Page.ViewStateUserKey = _antiXsrfTokenValue;
          }
          else
          {
              // Generate a new Anti-XSRF token and save to the cookie
              _antiXsrfTokenValue = Guid.NewGuid().ToString("N");
              Page.ViewStateUserKey = _antiXsrfTokenValue;

              var responseCookie = new HttpCookie(AntiXsrfTokenKey)
              {
                  HttpOnly = true,
                  Value = _antiXsrfTokenValue
              };
              if (FormsAuthentication.RequireSSL && Request.IsSecureConnection)
              {
                  responseCookie.Secure = true;
              }
              Response.Cookies.Set(responseCookie);
          }