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