Hello,

I am just checking if my last reply was helpful for you.

If you require any further assistance please do not hesitate to ask.

Sincerely,

Krasimir

Developer Support Engineer

Infragistics

www.infragistics.com/support

Hello,

I have created a sample application for you that demonstrates an approach for changing the X axis format if the XamDataChart is zoomed to a given level. In order to implement this functionality you can handle the Loaded event of the XamDataChart and in the event handler to handle the ZoomChanged event of the HorizontalZoombar like this:

        private void xamDataChart1_Loaded(object sender, RoutedEventArgs e)
        {
            (sender as XamDataChart).HorizontalZoombar.ZoomChanged
                 += new EventHandler<ZoomChangedEventArgs>(HorizontalZoombar_ZoomChanged);  
        }

In the event handler for the ZoomChanged event you can add the logic for changing the Label format using the NewRange property of the ZoomChangedEventArgs. In the attached example the format is changed if the Maximum – Minimum properties of the NewRange is less than 0.1 as follows:

        void HorizontalZoombar_ZoomChanged(object sender, ZoomChangedEventArgs e)
        {
            double zoom = e.NewRange.Maximum - e.NewRange.Minimum;

            if (zoom < 0.1)
            {
                xamDataChart1.Axes[0].Label = "{Label: dd MMM yyyy}";
            }
            else
            {
                xamDataChart1.Axes[0].Label = "{Label: MMM-yy}";
            }
        }

If you need any further assistance please do not hesitate to ask.

Sincerely,

Krasimir

Developer Support Engineer

Infragistics

www.infragistics.com/support