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Specifies whether horizontal or vertical grid lines or both are displayed on the sheet.
public enum GridLines
  Public Enum GridLines
  | Name | Description | 
|---|---|
| Both | Displays both horizontal and vertical grid lines on the sheet  | 
      
| Horizontal | Displays horizontal grid lines on the sheet  | 
      
| None | Does not display grid lines on the sheet  | 
      
| Vertical | Displays vertical grid lines on the sheet  |