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Graphics.FillRegion Method

Fills the interior of a Region.

Namespace:  System.Drawing
Assembly:  System.Drawing (in System.Drawing.dll)

public void FillRegion(
	Brush brush,
	Region region
)

Parameters

brush
Type: System.Drawing.Brush

Brush that determines the characteristics of the fill.

region
Type: System.Drawing.Region

Region that represents the area to fill.

ExceptionCondition
ArgumentNullException

brush is null.

-or-

region is null.

A Region is composed of rectangles and paths. If the region is not closed, an additional segment is added from the last point to the first point to close it.

The following code example is designed for use with Windows Forms, and it requires PaintEventArgs e, which is a parameter of the Paint event handler. The code performs the following action:

  • Creates a solid blue brush.

  • Creates a rectangle.

  • Creates a rectangular region.

  • Fills the rectangular region on the screen.

private void FillRegionRectangle(PaintEventArgs e)
{

    // Create solid brush.
    SolidBrush blueBrush = new SolidBrush(Color.Blue);

    // Create rectangle for region.
    Rectangle fillRect = new Rectangle(100, 100, 200, 200);

    // Create region for fill.
    Region fillRegion = new Region(fillRect);

    // Fill region to screen.
    e.Graphics.FillRegion(blueBrush, fillRegion);
}

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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