DrawingVisual Constructor

Initializes a new instance of the DrawingVisual class.

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

public DrawingVisual()

When you create a DrawingVisual object, it has no drawing content. You can add text, graphic, or image content by retrieving the drawing context of the object and drawing into it. A drawing context is returned by calling the RenderOpen method of a DrawingVisual object.

In the following example, a DrawingVisual object is created, and a rectangle is drawn into its drawing context. Notice that you must call the Close method of the DrawingContext to persist drawing content.

// Create a DrawingVisual that contains a rectangle. 
private DrawingVisual CreateDrawingVisualRectangle()
{
    DrawingVisual drawingVisual = new DrawingVisual();

    // Retrieve the DrawingContext in order to create new drawing content.
    DrawingContext drawingContext = drawingVisual.RenderOpen();

    // Create a rectangle and draw it in the DrawingContext.
    Rect rect = new Rect(new System.Windows.Point(160, 100), new System.Windows.Size(320, 80));
    drawingContext.DrawRectangle(System.Windows.Media.Brushes.LightBlue, (System.Windows.Media.Pen)null, rect);

    // Persist the drawing content.
    drawingContext.Close();

    return drawingVisual;
}

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0

.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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