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Resizing

RadDiagram gives you the ability to resize shapes by dragging their Resizing Thumbs. You can also use the shapes' Width and Height for this purpose.

Enable/Disable resizing

By default, the RadDiagram is enabled for resizing manipulation. In order to disable this functionality, you can set the IsResizingEnabled property to false.

WinForms RadDiagram Enable/Disable Resizing

this.radDiagram1.IsResizingEnabled = false;

Manipulation adorner

The IsManipulationAdornerVisible property controls whether the manipulation adorner will be displayed or not.

Width and Height

You can resize shapes by using their Width and Height properties:

WinForms RadDiagram Width and Height

RadDiagramShape resizedShape = new RadDiagramShape()
{
    Text = "",
    ElementShape = new RoundRectShape(5),
    BackColor = System.Drawing.Color.LightBlue
};
resizedShape.Width = 300;
resizedShape.Height = 100;
resizedShape.Position = new Telerik.Windows.Diagrams.Core.Point(10, 10);
radDiagram1.Items.Add(resizedShape);