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If you want to format a cell or a range of cells, Aspose.Cells provides the Style class. You can accomplish all formatting of cells or ranges using this class. Some of the formatting tasks that can be accomplished with the IStyle class are as follows:
If you want to set the style of a single cell, please use the Cell.SetStyle() method, and if you want to set the style of a range of cells, please use the Range.ApplyStyle() method.
The following sample code formats cell C4 of the worksheet in various ways, and the screenshot shows the output Excel file (21266438.xlsx) generated by it for your reference.

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