When having the following code on a button click
private void Button_Clicked(object sender, System.EventArgs e)
{
this.chart.Zoom = new Size();
}
The chart zoom is reset first time, but when zooming again and pressing the button, the zoom level does not reset. You have to pan the chart, then zoom reset works.
This code resets the zoom:
private void OnResetZoomClicked(object sender, EventArgs e)
{
this.chart.Zoom = new Size(1, 1); // This line is added as a workaround to reset the Zoom level
this.chart.Zoom = new Size();
}