Measuring Silverlight chart loading time

Question

I am trying to measure how long it takes for different Silverlight charting libraries (e.g. Silverlight Control Toolkit, Visifire, Telerik) to load on screen. My problem is that I can only measure the time until the control is loaded and drawing starts to take place on the screen, however rendering takes more time because of animation effects (e.g. points fading in). Is there any chance I can set up some automated way of detecting when the rendering has ended? My problem is that I only found the Loaded event handler on a Silverlight Framework element to hook on to which only notifies of when rendering starts. An example code I am currently using for Silverlight Control Toolkit is as follows: ``` public void Init() { Chart chart = new Chart(); // Init chart object DataPointSeries series; (...)// Init series, add lots of points, set data binding Chart.Series.Add(series); // Add series to chart chart.Loaded += new RoutedEventHandler(Chart_Loaded); LayoutRoot.Children.Add(chart); StartTim…

Accepted Answer

I've found some workarounds for some chart libraries and for some others I did not. Here are the events I could hook up to to get a realistic measurement time:

Dundas Charts:

```
Chart chart;
Chart.ImageReady += new ImageDownloaded(Chart_ImageReady); // Stop timer at this event
```

Silverlight Toolkit:

```
Chart chart;
DataPointSeries series;
Chart.Series.Add(series);
Chart.Series[0].Loaded += new RoutedEventHandler(Chart_Loaded); // Stop timer at this event
```

Steema TeeChart:

```
TChart chart;
chart.AfterDraw += new PaintChartEventHandler(chart_AfterDraw); // Stop timer at this event
```

Telerik RAD Charts:

```
RadChart chart;
chart.DefaultView.ChartArea.Loaded += new RoutedEventHandler(Chart_Loaded); // Stop timer at this event
```

Visifire

```
Chart chart;
chart.AnimationEnabled = false; // Turn off animation
chart.Loaded += new RoutedEventHandler(Chart_Loaded); // Stop timer at this event
```

The only library I couldn't hook up to an event fired at the right time was for Infagristics Netadvantage.

Measuring Silverlight chart loading time

Solution

Problem