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FillPatternStyle Enumeration

Represents the style of fill pattern being used for a cell format.

Currently supported only in XLS and XLSX. For all other formats it defaults to either None or Solid.

Namespace:  GemBox.Spreadsheet
Assembly:  GemBox.Spreadsheet (in GemBox.Spreadsheet.dll) Version:
public enum FillPatternStyle
  Member nameValueDescription

The fill style is none (no fill).

When PatternForegroundColor and/or PatternBackgroundColor are specified, a pattern of None overrides them and means the cell has no fill.


The fill style is solid.

When solid is specified, the PatternForegroundColor is the only color rendered, even when a PatternBackgroundColor is also specified.

Gray6186% Gray is Microsoft Excel pattern name, but any color can be used instead of black as a foreground color.
Gray121712% Gray is Microsoft Excel pattern name, but any color can be used instead of black as a foreground color.
Gray25425% Gray is Microsoft Excel pattern name, but any color can be used instead of black as a foreground color.
Gray50250% Gray is Microsoft Excel pattern name, but any color can be used instead of black as a foreground color.
Gray75375% Gray is Microsoft Excel pattern name, but any color can be used instead of black as a foreground color.
HorizontalStripe5Horizontal Stripe pattern.
VerticalStripe6Vertical Stripe pattern.
DiagonalStripe8Diagonal Stripe pattern.
ReverseDiagonalStripe7Reverse Diagonal Stripe pattern.
DiagonalCrosshatch9Diagonal Crosshatch pattern.
ThickDiagonalCrosshatch10Thick Diagonal Crosshatch pattern.
ThinHorizontalStripe11Thin Horizontal Stripe pattern.
ThinVerticalStripe12Thin Vertical Stripe pattern.
ThinDiagonalStripe14Thin Diagonal Stripe pattern.
ThinReverseDiagonalStripe13Thin Reverse Diagonal Stripe pattern.
ThinHorizontalCrosshatch15Thin Horizontal Crosshatch pattern.
ThinDiagonalCrosshatch16Thin Diagonal Crosshatch pattern.

Conceptually, cell formatting is divided into following groups:

  • Number - indicates how to format and render the numeric value of a cell. Associated property is NumberFormat.
  • Alignment - formatting information pertaining to text alignment in cells. Associated properties are HorizontalAlignment, VerticalAlignment, Indent, Rotation, IsTextVertical, WrapText and ShrinkToFit.
  • Font - defines the properties for the used font. Associated property is Font.
  • Border - expresses a single set of cell border formats (left, right, top, bottom and diagonal). Associated property is Borders.
  • Fill - specifies fill formatting (pattern or gradient). Associated property is FillPattern.
  • Protection - contains protection properties associated with the cell. Associated properties are Locked and FormulaHidden.

Additional CellStyle properties not associated with any formatting group are:

  • Name - name of the referenced workbook style.
  • QuotePrefix - to store numeric value of a cell as text; otherwise, .
  • IsDefault - if referenced workbook style is default (Normal) and there are no additional modifications of cell formatting; otherwise, .

Workbook contains a set of master styles which can be referenced by multiple cells.

Workbook must always contain at least one master style which cannot be removed and is, by default, referenced by all cells. This default style is Normal.

Workbook style can either be built-in or user-defined. Built-in style is accessible from workbook styles via BuiltInCellStyleName enumeration.

Cell formatting group (Number, Alignment, Font, Border, Fill or Protection) (and its associated properties) is resolved from referenced workbook (master) style, unless cell formatting group or its associated property is modified.

Cell formatting is available for one or more cells through Style property which is available on ExcelCell and CellRange types. Cell formatting specified on ExcelColumn and ExcelRow types through Style property is simply propagated to cell formatting of its Cells.

Note Note

For performance reasons, cell formatting on CellRange is resolved based just on its top-left cell formatting, except borders which are resolved based on corner cells depending on border side.

Setting cell formatting property on CellRange is propagated to each cell in a range.

To set workbook (master) style to one or more cells, simply assign it to Style property.

Tip Tip

Preferable way to modify formatting property of multiple cells is to get CellRange to which all those cells belong, and use Style property of that range to make the modification.

If modifying multiple formatting properties of a CellRange, without preserving unmodified formatting properties, preferable way is to create new instance of CellStyle, make modifications on it, and assign it to Style property of that range.

GemBox.Spreadsheet internally takes care not to allocate unnecessary cells when formatting a range of cells (for example, when formatting all worksheet cells) and to cache formatting information of equally formatted cells, at the appropriate time, to reduce memory footprint.


Following code demonstrates fill formatting:

// 'Fill' formatting group

cells["B24"].Value = "FillPattern.SetPattern(...)";
cells["C24"].Style.FillPattern.SetPattern(FillPatternStyle.ThinHorizontalCrosshatch, SpreadsheetColor.FromName(ColorName.Green), SpreadsheetColor.FromName(ColorName.Yellow));

cells["B25"].Value = "FillPattern.SetGradient(...)";
cells["C25"].Style.FillPattern.SetGradient(GradientShadingStyle.HorizontalHigh, SpreadsheetColor.FromName(ColorName.Green), SpreadsheetColor.FromName(ColorName.Yellow));
See Also