Unable to add ItemMapping to SeriesMapping

[Jeremy]

Hi

I have started creating a line chart in a new project using the following code and I get a weird error trying to add an ItemMapping to a SeriesMapping object. I had the chart working successfully with a DataSeries object, but I need to change to SeriesMapping apparently to use zoom + scroll properly.
The error is: 'Telerik.Windows.Controls.Charting.ItemMappingCollection' does not contain a definition for 'seriesmap1' and no extension method 'seriesmap1' accepting a first argument of type 'Telerik.Windows.Controls.Charting.ItemMappingCollection' could be found (are you missing a using directive or an assembly reference?)  and is thrown on the last 2 lines below.

SeriesMapping seriesmap1 = new SeriesMapping();
seriesmap1.SeriesDefinition = new LineSeriesDefinition();
seriesmap1.SeriesDefinition.Appearance.Stroke = new SolidColorBrush(Colors.Red);
seriesmap1.SeriesDefinition.Appearance.PointMark.Fill = new SolidColorBrush(Colors.Transparent);
seriesmap1.SeriesDefinition.Appearance.PointMark.Stroke = new SolidColorBrush(Colors.Transparent);
seriesmap1.SeriesDefinition.ShowItemLabels = false;
ItemMapping yMapping = new ItemMapping("NumberOfPeople", DataPointMember.YValue);
ItemMapping xMapping = new ItemMapping("Height", DataPointMember.XValue);
seriesmap1.ItemMappings.Add(yMapping);
seriesmap1.ItemMappings.Add(xMapping);

What am I doing wrong?

[Jeremy]

Worked it out! I changed the Target Silverlight Version in the project properties from Silverlight 3 to Silverlight 4 :)

[Yavor]

Hi Jeremy,

I am glad that you pinpointed the cause of the problem. I hope the sample is working as per your requirements now. If further questions arise, let us know.

All the best,
Yavor
the Telerik team