How to round fractional part of labels of BarSeries to thousandths?

[Dmitry]

Hello. I display labels on BarSeries. Please see the picture in 'BarChartLabels.PNG' file. But as you can see there, sometimes the numerical values of labels are too long and look ugly. How to round fractional part of labels of BarSeries to thousandths for example?

[Milena]

Hello Yaroslav, 

You can set Format property of labels as you can see in our help topic Label Definition. Another option is if you have a template for labels with TextBlock inside to set FormatString property of the Text.

I hope this information helps.

Regards,
Milena
Telerik by Progress

[Dmitry]

Thank you, Milena. I'll read about LabelDefinition and try. I bag your pardon I've been sick these days and therefore couldn't reply to you in time.

[Dmitry]

Hello, Milena, please give me an example of both label formatting options, if this is possible ofcourse. Thank you very much in advance.

[Dmitry]

Hello, Milena. I've already solved the problem by the use of your adviced aproach of Label Definition. See below:

<telerik:RadCartesianChart Visibility="{Binding IsComparativeBarChartVisible}">
            <!-- X-axis -->
            <telerik:RadCartesianChart.HorizontalAxis>
                <telerik:CategoricalAxis/>
            </telerik:RadCartesianChart.HorizontalAxis>
            <!-- Y-axis -->
            <telerik:RadCartesianChart.VerticalAxis>
                <telerik:LinearAxis Title="Относительная величина" Minimum="{Binding ComparativeChartMinimum}" Maximum="{Binding ComparativeChartMaximum}"/>
            </telerik:RadCartesianChart.VerticalAxis>
            <!--Bar chart itself-->
            <telerik:RadCartesianChart.Series>
                <telerik:BarSeries ShowLabels="True" CategoryBinding="Category" ValueBinding="Value" ItemsSource="{Binding ComparativeData}">
                    <!--AND FINALLY, HERE I ASSIGN THE FORMAT TO A LABEL-->
                    <telerik:BarSeries.LabelDefinitions>
                        <telerik:ChartSeriesLabelDefinition Format="{} {0:0.###}"/>
                    </telerik:BarSeries.LabelDefinitions>
                </telerik:BarSeries>
            </telerik:RadCartesianChart.Series>
        </telerik:RadCartesianChart>

But you wrote: "...Another option is if you have a template for labels with TextBlock inside to set FormatString property of the Text..". So if this is possible, please give me an example of this aproach.

[Milena]

Hello Yaroslav,

I'm glad that you found a solution. The second option I mentioned was in case you are using a template for the labels: 

<telerik:BarSeries.LabelDefinitions>
    <telerik:ChartSeriesLabelDefinition>
        <telerik:ChartSeriesLabelDefinition.Template>
            <DataTemplate>
                <TextBlock Text="{Binding Value, StringFormat={}{0:0.00}}"  />
            </DataTemplate>
        </telerik:ChartSeriesLabelDefinition.Template>
    </telerik:ChartSeriesLabelDefinition>
</telerik:BarSeries.LabelDefinitions>

I hope this information helps.

Regards,
Milena
Telerik by Progress

[Dmitry]

Thank you very much for your help and support.