Too much time to plot a series

[Angshuman]

I am plotting a line graph with a set of test data of only 5 data points and it takes visibly long time to plot the line. Is it some kind of animated behavior that is responsible for this or I am missing something? Please help me on how I can get the line plotted in just one shot - with no visible delay between its start and end ...

The code is as follws:

The data structure that is set to the itemsource of  RadChart control is

private ObservableCollection<KeyValuePair<int, Double>> _datapoints;

The chart is initialised as below:

radchart.DefaultView.ChartArea.AxisX.AutoRange = false;

radchart.DefaultView.ChartArea.AxisX.AddRange(-100, 100, 50);

radchart.DefaultView.ChartArea.AxisX.MajorGridLinesVisibility = Visibility.Visible;

radchart.DefaultView.ChartArea.AxisY.AutoRange = false;

radchart.DefaultView.ChartArea.AxisY.AddRange(-100, 100, 50);

radchart.DefaultView.ChartArea.AxisY.MajorGridLinesVisibility = Visibility.Visible;

SeriesMapping sm = new SeriesMapping();

sm.SeriesDefinition = new LineSeriesDefinition();

sm.SeriesDefinition.ShowItemLabels = false;

sm.ItemMappings.Add(new ItemMapping("Key", DataPointMember.XValue));

sm.ItemMappings.Add(new ItemMapping("Value", DataPointMember.YValue));

radchart.SeriesMappings.Add(sm);

radchart.ItemsSource = _datapoints;

_datapoints.Add(

new KeyValuePair<int, double>(1, 10.0));

 

_datapoints.Add(

new KeyValuePair<int, double>(50, 20.9));

 

_datapoints.Add(

new KeyValuePair<int, double>(80, 80.1));

 

_datapoints.Add(

new KeyValuePair<int, double>(100, 34.8));

 

I have a button to trigger refresh on the control, who handler is as follows:

private void Refresh_Click(object sender, RoutedEventArgs e)
{
    _datapoints[0] = new KeyValuePair<int, double>(1, Rnd.Next(-100, 100) *   Rnd.NextDouble());
    _datapoints[1] = new KeyValuePair<int, double>(50, Rnd.Next(-100, 100) * Rnd.NextDouble());
    _datapoints[2] = new KeyValuePair<int, double>(80, Rnd.Next(-100, 100) * Rnd.NextDouble());
    _datapoints[3] = new KeyValuePair<int, double>(100, Rnd.Next(-100, 100) * Rnd.NextDouble());
}

[Evgeni "Zammy" Petrov]

Hello Angshuman,

 Try turning off the animations :

radchart.DefaultView.ChartArea.EnableAnimations = false;

Let me know if this helped you out.

Regards,
Evgeni "Zammy" Petrov
the Telerik team