public MyDataTable()
 {
     if (File.Exists(Application.StartupPath + "\\Data.xml"))
     {
         StoreDataTable = MyDataSource.Read();
     }
     else
     {
         StoreDataTable = new DataTable("DiscuzData");
         DataColumn dataColumn = new DataColumn("TopicID", typeof(int));
         StoreDataTable.Columns.Add(dataColumn);
         StoreDataTable.Columns.Add("HitFloorIDs", typeof(string));
         StoreDataTable.Columns.Add("CurrentFloor", typeof(string));
         StoreDataTable.Columns.Add("Content", typeof(string));
         StoreDataTable.Columns.Add("Status", typeof(string));
         StoreDataTable.PrimaryKey = new[] { dataColumn };
         Save();
     }
 }
 public void Save()
 {
     MyDataSource.Save(StoreDataTable);
 }