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Gets or sets the style used to display every cell in the range.
public CellStyle Style { get; set; }
Getting or setting the range style ensures that every cell in the range has the same style. If the range does not contain any cells with custom styles, this property returns null.
The code below creates a CellRange structure and uses it to apply a custom style to the entire range.
// create a style
CellStyle cs = _flex.Styles.Add("red");
cs.BackColor = Color.Red;
// create a cell range and assign it a style
CellRange rg = _flex.GetCellRange(1, 1, 5, 5);
rg.Style = cs;