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To create a GlobalStyle, call Workbook.CreateStyle.

NamedStyle

The ExcelApplication object contains a collection of NamedStyles, which - unlike GlobalStyles are accessible after the workbook is saved. This collection includes Excel's built-in styles and any user-defined styles in a workbook opened with the ExcelApplication.Open method.

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To return an existing NamedStyle, call Workbook.GetNamedStyle.

CellStyle

Every cell in an Excel workbook contains a unique cell style. This style is exposed by ExcelWriter through the CellStyle class. Changes to a CellStyle affect only the cell that owns the style. A CellStyle may be set on another cell or group of cells, but this action clones the style. Changes to the original CellStyle reference affect only the owning cell and changes to the cloned CellStyle affect only the cell on which the style was set. If the style is set on a cell grouping object - such as an area, range, row, or column - each cell in the grouping receives a unique clone of the style.

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