private void InitStandards()
{
this.Cells = new CellCollection();
this.Cells.Removed += CellCollection_Removed;
this.Cells.Inserted += CellCollection_Inserted;
this.CellSpanCollection = new CellSpanCollection();
this.CellSpanCollection.Inserted += CellSpanCollection_Inserted;
this.CellSpanCollection.Removed += CellSpanCollection_Removed;
}