パラメータ
- row
 - Row index.
 - col
 - Column index
 - newStyle
 - The CellStyle to associate with the cell.
 
The SetCellStyle(Int32,String,CellStyle) method is useful if you want to assign a new style to a single cell. You can also reset the cell style by setting it to null (Nothing, in VB).
To apply a custom cell style to an entire row or column, set the row or column's RowCol.Style properties.
To apply a custom style to a range cells, use a CellRange object. For example:
CellRange rg = _flex.GetCellRange(3, 3, 10, 10); rg.Style = _flex.Styles["MyRangeStyle"];