Scrolling the Diagram using Page Down/Up keys and Arrow keys

Scrolling the Diagram using Page Down/Up keys and Arrow keys

Syncfusion® Diagram supports scrolling the diagram with the help of keyboard interaction. To achieve this functionality, override the ProcessCmdKey method and change the Diagram.View’s "Origin" as well as "ScrollVirtualBounds.Location" values while pressing the Page Up/Down keys.

The below code shows how to scroll diagram while pressing page Up/Down keys.

[C#]

PointF origin = diagram1.View.Origin;
PointF virtualTopLeft = diagram1.View.ScrollVirtualBounds.Location;
if (keyData == Keys.PageDown)
{
origin.Y += 10;
virtualTopLeft.Y -= 10;
}
if (keyData == Keys.PageUp)
{
//down                  
origin.Y -= 10;
}

[VB]

Dim origin As PointF = diagram1.View.Origin
Dim virtualTopLeft As PointF = diagram1.View.ScrollVirtualBounds.Location
If keyData = Keys.PageDown Then
origin.Y += 10
virtualTopLeft.Y -= 10
End If
If keyData = Keys.PageUp Then
'down                  
origin.Y -= 10
End If

Conclusion

I hope you enjoyed learning about scrolling the diagram using Page Down/Up keys and Arrow keys.

You can refer to WinForms Diagram feature tour page to learn about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our WinForms Diagram example to understand how to create and manipulate data.

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