static public void notifyAll()
{
DataAbstract DA = new DataAbstract();
DataTable userIDs = DA.returnAllUserIDs().Tables[0];
for (int rows = 0; rows < userIDs.Rows.Count; ++rows)
{
int user = Convert.ToInt32(userIDs.Rows[rows].Field <object>("UserID"));
notifyOne(user);
}//end of userID
}