[Solved] Chart Legent Problem

[Francisco]

Hi,

I work with DynamicObject  and biding radgridview and the radgridview biding with radchart. When  view de chart de legent see the neme Item1, Item2, Item3 etc...  I want to see the series name what is the problem:

 

 

temMapping

 

 

itemMapping = new ItemMapping();

 

 

ChartDetail.SeriesMappings.Clear();

 

 

 

SeriesMapping seriesMapping = new SeriesMapping();

 

 

ChartDetail.ItemsSource = table.ToList();

 

 

 

 

 

string x = aChart[0].Replace("[", "").Replace("]", "");

 

 

 

 

string[] series = aChart[1].Replace("],[", "$").Replace("[", "").Replace("]", "").Split('$');

 

 

 

 

string[] sgroup = aChart[2].Replace("],[", "$").Replace("[", "").Replace("]", "").Split('$');

 

 

　

seriesMapping.SeriesDefinition =

 

new DoughnutSeriesDefinition();

 

ChartDetail.DefaultView.ChartLegend.Header = x;

ChartDetail.DefaultView.ChartTitle.Content = aChart[4].ToString().Trim();

itemMapping =

 

new ItemMapping();

 

 

itemMapping.DataPointMember =

 

DataPointMember.XCategory;

 

 

itemMapping.FieldName = x;
seriesMapping.LegendLabel = x;

 

seriesMapping.ItemMappings.Add(itemMapping);

 

 

 

for (int i = 0; i < series.Count(); i++)

 

 

{

 

itemMapping =

 

new ItemMapping();

 

 

itemMapping.DataPointMember =

 

DataPointMember.YValue;

 

 

itemMapping.FieldName = SLGeoviewerClassLibrary.Model.

 

Common.RemoveInvalidChars(series[i].ToString().Trim());

 

 

seriesMapping.ItemMappings.Add(itemMapping);

 

}

ChartDetail.SeriesMappings.Add(seriesMapping);

 

 

 

ChartDetail.SeriesMappings.Add(seriesMapping);

Please help me...... ;)

 

[Francisco]

I see the examples in this blog http://blogs.telerik.com/blogs/09-04-23/lightweight_datatable_for_your_silverlight_applications.aspx

[Giuseppe]

Hi Francisco,

Generally the default legend display mode for Pie / Doughnut series types is LegendDisplayMode.DataPointLabel -- you need to set the seriesMapping.SeriesDefinition.LegendDisplayMode property to LegendDisplayMode.SeriesLabel in order to visualize the seriesMapping.LegendLabel value.

Note however that changing the legend display mode, will also change the coloring of the doughnut slices and all of them will be visualized in the same color.

If that is not what you want (i.e. you want to keep the distinct coloring of the doughnut slices), you can keep the legend display mode property as is, but disable the automatic generation of legend items by setting ChartLegend.UseAutoGeneratedItems property to false and then manually add ChartLegendItem to the ChartLegend.Items collection:

RadChart1.DefaultView.ChartLegend.UseAutoGeneratedItems = false;
RadChart1.DefaultView.ChartLegend.Items.Add(new ChartLegendItem() { Label = "TEST" });

Greetings,
Giuseppe
the Telerik team

[Raja Rajeswari]

hi,

I have created the Pie chart with Legend lables by making Autogenerated columns = false
When i try to set the Interactivity settings Legend is not getting highlighted.What might be the reason
how to fix this issue.Please find the code that how i set the Legend.

 <telerik:ChartLegend Name="LegendPieflip" Visibility="Visible"    LegendItemMarkerShape="SquareRounded" UseAutoGeneratedItems="True"   >
                                                    <telerik:ChartLegendItem  Label="xxxx" MarkerFill="HotPink" ></telerik:ChartLegendItem>
                                                    <telerik:ChartLegendItem Label="yyyy" MarkerFill="DodgerBlue"></telerik:ChartLegendItem>
 
                                                </telerik:ChartLegend>

Regards,
Chakri

[Giuseppe]

Hello Raja Rajeswari,

The built-in hover interactivity settings are supported only when the legend generates its items automatically. Could you elaborate why do you need to generate the legend items manually in your scenario?


Greetings,
Giuseppe
the Telerik team