public void saveChangesToFile(TopTaskManagement topTaskMgt) 
 {
      using (StreamWriter writer = new StreamWriter(topTaskMgtForNotification.getFileName()))
     {
        for(int i=0;i<topTaskMgt.getTotalNoOfTaskMgt();i++)
            for(int j=0;j<topTaskMgt.getNoOfTasksInATaskList(i);j++)
                 {
                     string temp = "";
                     temp += topTaskMgt.getEventName(i) + '|' + topTaskMgt.getPersonName(i,j) + '|' + topTaskMgt.getTaskName(i,j) + '|' + topTaskMgt.getDueDate(i,j) + '|' + topTaskMgt.getStatus(i,j);
                     writer.WriteLine(temp);
                 }
     }
 }