Zoom not working on custom itemmappings specified?

[Rahul]

Zoom is working fine in the following Case. Have a look at the code
.

 foreach (var t in e.Result.lstMeasureData)
 {
      tempData.Add(new MeasureData { Datetaken = t.Datetaken, A1C = t.A1C, DBP = t.DBP, HDL = t.HDL, LDL = t.LDL, SBP = t.SBP, Weight = t.Weight });
 }

radChart1.DefaultSeriesDefinition = new LineSeriesDefinition();

             

radChart1.DefaultSeriesDefinition.ShowItemLabels = false;

radChart1.DefaultView.ChartArea.EnableAnimations = true;

radChart1.DefaultView.ChartArea.EnableTransitionAnimations = true;

 

radChart1.DefaultView.ChartArea.ZoomScrollSettingsX.RangeEnd = 1;

radChart1.DefaultView.ChartArea.ZoomScrollSettingsX.MinZoomRange = 0.001;

radChart1.DefaultView.ChartArea.ZoomScrollSettingsX.ScrollMode = ScrollMode.ScrollAndZoom;

 

radChart1.DefaultView.ChartArea.AxisY.Title = "Measures";

radChart1.DefaultView.ChartArea.AxisX.Title = "Dates";

 

radChart1.ItemsSource = tempData;

However if define custom series mappings and item mapping zoom is not working.
Even after zooming on chart data remains as it is.
Check the following code in which zoom is not working.

foreach (var t in e.Result.lstMeasureData)
 {
      tempData.Add(new MeasureData { Datetaken = t.Datetaken, A1C = t.A1C, DBP = t.DBP, HDL = t.HDL, LDL = t.LDL, SBP = t.SBP, Weight = t.Weight });
 }
 
radChart1.DefaultSeriesDefinition = new LineSeriesDefinition();

              

 radChart1.DefaultSeriesDefinition.ShowItemLabels = false;

 radChart1.DefaultView.ChartArea.EnableAnimations = true;

 radChart1.DefaultView.ChartArea.EnableTransitionAnimations = true;

 

 radChart1.DefaultView.ChartArea.ZoomScrollSettingsX.RangeEnd = 1;

 radChart1.DefaultView.ChartArea.ZoomScrollSettingsX.MinZoomRange = 0.001;

 radChart1.DefaultView.ChartArea.ZoomScrollSettingsX.ScrollMode = ScrollMode.ScrollAndZoom;

  

 radChart1.DefaultView.ChartArea.AxisY.Title = "Measures";

 radChart1.DefaultView.ChartArea.AxisX.Title = "Dates";

 

 

 SeriesMapping seriesMapping1 = new SeriesMapping() { LegendLabel = "Weight" };

 seriesMapping1.ItemMappings.Add(new ItemMapping("Weight", DataPointMember.YValue));

 

 SeriesMapping seriesMapping2 = new SeriesMapping() { LegendLabel = "HDL" };

 seriesMapping2.ItemMappings.Add(new ItemMapping("HDL", DataPointMember.YValue));

 

 SeriesMapping seriesMapping3 = new SeriesMapping() { LegendLabel = "LDL" };

 seriesMapping3.ItemMappings.Add(new ItemMapping("LDL", DataPointMember.YValue));

 

 SeriesMapping seriesMapping4 = new SeriesMapping() { LegendLabel = "Datetaken" };

 seriesMapping4.ItemMappings.Add(new ItemMapping("Datetaken", DataPointMember.XCategory));

 

 SeriesMappingCollection seriesMappings = new SeriesMappingCollection() { seriesMapping1, seriesMapping2, seriesMapping3 };

 radChart1.SeriesMappings = seriesMappings;

 

radChart1.ItemsSource = tempData;

[Rahul]

Admins plz answer this post as soon as possible. I'm completely stucked here.

[Evgenia]

Hi Rahul,

The issue you are facing is caused because you are setting XCategory as new SeriesMapping. Instead you should add it as new ItemsMapping in your existing series mappings. Here is how you can achieve this:

RadChart1.DefaultSeriesDefinition = new LineSeriesDefinition();
           RadChart1.DefaultSeriesDefinition.ShowItemLabels = false;
           RadChart1.DefaultView.ChartArea.EnableAnimations = true;
           RadChart1.DefaultView.ChartArea.ZoomScrollSettingsX.RangeEnd = 1;
           RadChart1.DefaultView.ChartArea.ZoomScrollSettingsX.MinZoomRange = 0.001;
           RadChart1.DefaultView.ChartArea.ZoomScrollSettingsX.ScrollMode = ScrollMode.ScrollAndZoom;
           RadChart1.DefaultView.ChartArea.AxisY.Title = "Measures";
           RadChart1.DefaultView.ChartArea.AxisX.Title = "Dates";
           SeriesMapping seriesMapping1 = new SeriesMapping() { LegendLabel = "Weight" };
           seriesMapping1.ItemMappings.Add(new ItemMapping("Weight", DataPointMember.YValue));
           seriesMapping1.ItemMappings.Add(new ItemMapping("Datetaken", DataPointMember.XCategory));
           SeriesMapping seriesMapping2 = new SeriesMapping() { LegendLabel = "HDL" };
           seriesMapping2.ItemMappings.Add(new ItemMapping("HDL", DataPointMember.YValue));
           seriesMapping2.ItemMappings.Add(new ItemMapping("Datetaken", DataPointMember.XCategory));
           SeriesMapping seriesMapping3 = new SeriesMapping() { LegendLabel = "LDL" };
           seriesMapping3.ItemMappings.Add(new ItemMapping("LDL", DataPointMember.YValue));
           seriesMapping3.ItemMappings.Add(new ItemMapping("Datetaken", DataPointMember.XCategory));
           SeriesMappingCollection seriesMappings = new SeriesMappingCollection() { seriesMapping1, seriesMapping2, seriesMapping3};
           RadChart1.SeriesMappings = seriesMappings;

Greetings,
Evgenia
the Telerik team

[Rahul]

Thanx for reply. Thats what i want.