Where does IStyle live in the IronXL API?

IStyle is an interface in the IronXL.Styles namespace, shipped in IronXL.dll. It is returned by the Style property of Cell and Range, and exposes a cell's font, borders, fill, and alignment.

What returns IStyle in IronXL?

Cell.Style and Range.Style both return an IStyle. IronXL exposes IStyle through these get-only properties rather than letting you construct one, so styling means reading Style and assigning to its members such as Font, BackgroundColor, and the border properties.

How do you set a cell's font and borders in C#?

Read Cell.Style or Range.Style to get an IStyle, then use Font (an IFont) for bold, size, and color, and the border properties (TopBorder, BottomBorder, LeftBorder, RightBorder), each an IBorder, for line color and style. SetBackgroundColor sets the fill.

Interface IStyle

Interface for cell style

Namespace: IronXL.Styles

Assembly: IronXL.dll

Syntax

public interface IStyle

IStyle is what a cell or range hands back when a developer wants to control how it looks. Reading Cell.Style or Range.Style returns this contract, and everything about a cell's appearance, the fill color, font, borders, alignment, rotation, and text wrapping, is set through it. It is the single styling surface in IronXL, so the same object covers a one-cell tweak and a whole-range format.

A developer obtains IStyle rather than constructing it: Cell.Style and Range.Style both expose it as a get-only property, so styling means reading the property and assigning to its members. Assigning to a range's Style applies the change across every cell in the selection in one pass, which is how column-wide or table-wide formatting is done without looping. A single cell and a wide selection use the same surface, so the styling code does not change as the target grows.

The everyday members fall into a few groups. Font returns an IFont for typeface, size, bold, italic, and color; the four side borders (TopBorder, BottomBorder, LeftBorder, RightBorder) plus DiagonalBorder each return an IBorder for line color and style, with DiagonalBorderDirection setting which way a diagonal runs. Fill is handled by BackgroundColor together with FillPattern, or through the SetBackgroundColor helper that accepts a Color or an RGB string. Layout comes from HorizontalAlignment, VerticalAlignment, WrapText, ShrinkToFit, Indention, and Rotation. Because the border and font members return their own interfaces, a fluent path like range.Style.Font.Bold = true is the normal idiom.

using IronXL;

WorkBook workbook = WorkBook.Load("report.xlsx");
WorkSheet sheet = workbook.DefaultWorkSheet;
IStyle headerStyle = sheet["A1:D1"].Style;
headerStyle.Font.Bold = true;
headerStyle.SetBackgroundColor("#DDEBF7");
headerStyle.BottomBorder.SetBorderStyle("#000000", BorderType.Thin);

The style cells, borders, and fonts example demonstrates the full surface, the border and alignment how-to covers borders and layout, and the background pattern color how-to handles fills.

Properties

BackgroundColor

Gets the color of the background in rgb format. E.g. #ffffff

Declaration

string BackgroundColor { get; set; }

Property Value

Type	Description
System.String

BottomBorder

Property that represents cell bottom border

Declaration

IBorder BottomBorder { get; }

Property Value

Type	Description
IBorder

DiagonalBorder

Property that represents cell diagonal border

Declaration

IBorder DiagonalBorder { get; }

Property Value

Type	Description
IBorder

DiagonalBorderDirection

Gets or sets the diagonal border direction value.

Declaration

DiagonalBorderDirection DiagonalBorderDirection { get; set; }

Property Value

Type	Description
DiagonalBorderDirection

FillPattern

Gets or sets fill pattern of the cell.

Declaration

FillPattern FillPattern { get; set; }

Property Value

Type	Description
FillPattern

Font

Property that represents cell font value

Declaration

IFont Font { get; }

Property Value

Type	Description
IFont

HorizontalAlignment

Gets or sets the horizontal alignment of the cell.

Declaration

HorizontalAlignment HorizontalAlignment { get; set; }

Property Value

Type	Description
HorizontalAlignment

Indention

Get the number of spaces to indent the text in the cell

Declaration

short Indention { get; set; }

Property Value

Type	Description
System.Int16

LeftBorder

Property that represents cell left border

Declaration

IBorder LeftBorder { get; }

Property Value

Type	Description
IBorder

RightBorder

Property that represents cell right border

Declaration

IBorder RightBorder { get; }

Property Value

Type	Description
IBorder

Rotation

Get the degree of rotation (between -90 and 90 degrees) for the text in the cell

Declaration

short Rotation { get; set; }

Property Value

Type	Description
System.Int16

ShrinkToFit

Gets or sets a value indicating whether the cell should be auto-sized to shrink to fit if the text is too long

Declaration

bool ShrinkToFit { get; set; }

Property Value

Type	Description
System.Boolean

TopBorder

Property that represents cell top border

Declaration

IBorder TopBorder { get; }

Property Value

Type	Description
IBorder

VerticalAlignment

Gets or sets the vertical alignment of the cell.

Declaration

VerticalAlignment VerticalAlignment { get; set; }

Property Value

Type	Description
VerticalAlignment

WrapText

Bool property that indicates if text is wrapped

Declaration

bool WrapText { get; set; }

Property Value

Type	Description
System.Boolean

Methods

SetBackgroundColor(Color)

Method for setting cell background color with IronSoftware.Drawing.Color value

Declaration

void SetBackgroundColor(Color color)

Parameters

Type	Name	Description
IronSoftware.Drawing.Color	color	Color value

SetBackgroundColor(String)

Method for setting cell background color with an rgb string.

Declaration

void SetBackgroundColor(string rgb)

Parameters

Type	Name	Description
System.String	rgb	Color RGB value