Binding DataPointMember to a DependencyProperty

[Christoph]

Hi,
is it possible to bind the DataPointMember of a RadChart to a DependencyProperty of an object? In this particular case I want the bar height to change as soon as I change the value in the text box.

Here is some sample code:

RadChart1.ItemsSource = new TextBox[] { text };

<TextBox Name="text">2</TextBox>
<telerik:RadChart x:Name="RadChart1" >

        <telerik:RadChart.SeriesMappings>

            <telerik:SeriesMapping LegendLabel="Test">              

                <telerik:SeriesMapping.ItemMappings>

                    <telerik:ItemMapping DataPointMember="YValue"  FieldName="Text" />                       

                    </telerik:SeriesMapping.ItemMappings>

            </telerik:SeriesMapping>

        </telerik:RadChart.SeriesMappings>

    </telerik:RadChart>

Thanks for your help.
Christoph

[Yavor]

Hello Christoph,

You can do this by creating an object that implements INotifyPropertyChanged and setting it to both RadChart and TextBox like this:

<telerik:RadChart x:Name="RadChart1" Margin="0,0,0,48" ItemsSource="{Binding}">
    <telerik:RadChart.SeriesMappings>
        <telerik:SeriesMapping>
            <telerik:SeriesMapping.SeriesDefinition>
                <telerik:BarSeriesDefinition />
            </telerik:SeriesMapping.SeriesDefinition>
            <telerik:ItemMapping FieldName="yValue" DataPointMember="YValue" />
        </telerik:SeriesMapping>
    </telerik:RadChart.SeriesMappings>
</telerik:RadChart>
<TextBox Height="23" HorizontalAlignment="Left" Margin="342,0,0,12" Name="textBox1" VerticalAlignment="Bottom" Width="120" Text="{Binding Path=[0].yValue, Mode=TwoWay}" />

In the attached file you can find a sample project that demonstrates this approach. Hope this helps!

All the best,
Yavor Ivanov
the Telerik team