System.Web.Security.RolePrincipal.SetDirty C# (CSharp) Method

		public void SetDirty ()
		{
			_listChanged = true;
			_cachedRoles = null;
			_cachedArray = null;
		}

        static public void RemoveUsersFromRole(string[] usernames, string roleName)
        {
            EnsureEnabled();

            SecUtility.CheckParameter(ref roleName, true, true, true, 0, "roleName");

            SecUtility.CheckArrayParameter(ref usernames,
                                           true,
                                           true,
                                           true,
                                           0,
                                           "usernames");

            Provider.RemoveUsersFromRoles(usernames, new string[] { roleName });
            try
            {
                RolePrincipal user = GetCurrentUser() as RolePrincipal;
                if (user != null && user.ProviderName == Provider.Name && user.IsRoleListCached)
                {
                    foreach (string username in usernames)
                    {
                        if (StringUtil.EqualsIgnoreCase(user.Identity.Name, username))
                        {
                            user.SetDirty();
                            break;
                        }
                    }
                }
            }
            catch { }
        }