TileBrush.Viewport Property


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Gets or sets the position and dimensions of the base tile for a TileBrush.

Namespace:   System.Windows.Media
Assembly:  PresentationCore (in PresentationCore.dll)

public Rect Viewport { get; set; }

Property Value

Type: System.Windows.Rect

The position and dimensions of the base tile for a TileBrush. The default value is a rectangle (Rect) with a TopLeft of (0,0) and a Width and Height of 1.

When you paint an area by using a TileBrush, you use three components: content, tiles, and the output area. The following illustration shows how these three TileBrush components relate to each other.

TileBrush components

Components of a TileBrush with a single tile

Components of a tiled TileBrush

Components of a TileBrush with a TileMode of Tile

The Viewport property determines the size and position of the tiles in a TileBrush. By default, a TileBrush has a single tile that fills the whole output area. The Stretch property controls how the TileBrush content fits into that tile. You can override this default behavior and specify the tile size by using the Viewport property.

Use the ViewportUnits property to specify whether the Viewport uses absolute or relative coordinates. If the coordinates are relative, they are relative to the size of the output area. The point (0,0) represents the upper-left corner of the output area, and (1,1) represents the lower-right corner of the output area. To specify that the Viewport property uses absolute coordinates, set the ViewportUnits property to Absolute.

The following illustration shows the difference in output when you set the ViewportUnits property of a TileBrush to either relative or absolute.

Absolute and Relative Viewport Units

Relative and absolute ViewportUnits

Identifier field


Metadata properties set to true


.NET Framework
Available since 3.0
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