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How to load the image annotated with shapes and text in WPF Image Editor?
This section explains how to annotate the image with shapes (Circle, Rectangle, Arrow, Path) and text programmatically on loading itself.
To add shape / text on loading the image, you need to invoke the ImageLoaded event as shown in the below snippet.
XAML
<editor:SfImageEditor x:Name="editor" ImageLoaded="SfImageEditor_Loaded" ImageSource="Assets\RoadView.jpeg"> </editor:SfImageEditor>
Add the required shapes or text along with its customization such as color, stroke and its position either using PenSettings or TextSettings in the loaded event a shown in the below code.
C#
/// <summary>
/// Invoked when the image in the <see cref="SfImageEditor"/> is loaded.
/// </summary>
/// <param name="sender">Image editor</param>
/// <param name="e">event arguments</param>
private void SfImageEditor_Loaded(object sender, ImageLoadedEventArgs e)
{
editor.AddShape(ShapeType.Circle, new PenSettings()
{
Bounds = new Rect(10, 15, 20, 20),
Stroke = new SolidColorBrush(Colors.BlueViolet)
});
editor.AddText("Good Morning", new TextSettings()
{
FontFamily = new FontFamily("Consolas"),
TextEffects = TextEffects.Italic,
Bounds = new Rect(45, 30, 25, 25),
});
}
Screenshot: 
Sample for loading shape and text on the image can be referred here.