How to Center the Zoom on the Selected Items

Environment

Product Version 2019.3.1023
Product RadDiagram for WPF

Description

How to force the zoom operation inside the selection boundaries.

Solution

Handle the PreviewZoom event of the RadDiagram and use its BringIntoView method in conjunction with its Zoom property.

private void diagram_PreviewZoom(object sender, Telerik.Windows.Controls.Diagrams.DiagramZoomEventArgs e) 
{ 
    e.Handled = true; 
    this.diagram.BringIntoView(diagram.SelectionBounds, false); 
    this.diagram.Zoom = e.TargetZoom; 
} 
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