WebCanvas.Refresh
From Xojo Documentation
Method
WebCanvas.Refresh(EraseBackground As Boolean = True)
New in 2013r1
Supported for all project types and targets.
New in 2013r1
Supported for all project types and targets.
Similar to Invalidate, but causes the WebCanvas to be redrawn immediately by calling the Paint event.
Notes
In most cases you want to use Invalidate instead as it is more efficient.
Sample Code
After recalculating a chart created using a Canvas, you can tell it to redraw itself:
RecalculateChart
ChartCanvas.Refresh
ChartCanvas.Refresh