Chart legend item Names not showing

[steve white]

I have what I believe should be a simple problem, my legend items are just showing up as item0 - item6. I need them to show up with the name of the object in my items from the database.

I'm using a dataset to link to SQL, my 2 fields in my dataset are "sales" and "productclass".
I'm not sure what I missed, I followed the examples from the legend section exactly I think.

thanks for any help you can provide.
steve

<UserControl x:Class="UserControl2"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Width="300" Height="300" xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation">
    <Grid>
        <telerik:RadChart Name="RadChart1"  >

        </telerik:RadChart>
    </Grid>
</UserControl>

Imports Telerik.Windows.Controls.Charting
Imports System.Data

Partial Public Class UserControl2

    Private Shared tacust As New DataSet1TableAdapters.pcSumTableAdapter
    Private Shared dscust As New DataSet1
    Private Shared m_sales As DataTable
    Public Shared ReadOnly Property Sales() As DataTable
        Get
            Return m_sales
        End Get
    End Property

    Private Sub UserControl1_Initialized(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Initialized
        RadChart1.DefaultSeriesDefinition = New PieSeriesDefinition()
        RadChart1.DefaultView.ChartLegend.UseAutoGeneratedItems = True
        RadChart1.DefaultView.ChartLegend.Header = "Top 10"
        tacust.Fill(dscust.pcSum)
        m_sales = dscust.Tables("pcSum")
        RadChart1.ItemsSource = m_sales
    End Sub
End Class

[Nikolay]

Hi steve white,

In order for the Chart legend to display the items from your database, instead of auto-generating them, you need to create a data bound chart and define two ItemMappings - one that binds the "sales" from your dataset to DataPointMember.YValue and the other for binding the "productclass" to DataPointMember.LegendLabel.

Please, refer to this help topic, from which Binding the RadChart section should provide you with more information on how to bind your chart to your database.

Hope this helps.If you need further assistance, please, do not hesitate to contact us. 

Greetings,
Nikolay
the Telerik team

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