How to Set Selected Points in RadCartesianChart?

[Ahmed]

Hi,,

How to set the selected points in RadCartesianChart with ScatterPointSeries from the View Model?


Thanks,,

[Peshito]

Hi,

Please take a look at our help topic describing and showing how to use the selection behavior.

Hope that helps.

Regards,
Peshito
Telerik

 

 

[Ahmed]

Thanks Peshito,

I'm able to get the selected points, but what I want is that When the user selected an item in the Gridview (which presents the same collection), I want the same point get selected in the chart view. 

Note: The ItemsSource for both controls is same QueryableCollectionView. 

Thanks,

[Peshito]

Hello,

This can be achieved by wiring to GridView's SelectionChanged event.

For instance:

void gridView_SelectionChanged(object sender, Telerik.Windows.Controls.SelectionChangeEventArgs e)
   {
       var removed = e.RemovedItems;

       var add = e.AddedItems;

       foreach (var gridViewItem in e.RemovedItems.OfType<MyObject>())
       {
               foreach (var chartViewItem in (chart.Series[0] as BarSeries).DataPoints)
               {
                   if (chartViewItem.Value == gridViewItem.ID)
                   {
                       chartViewItem.IsSelected = false;
                   }
           }
       }

       foreach (var gridViewItem in e.AddedItems.OfType<MyObject>())
       {
           foreach (var chartViewItem in (chart.Series[0] as BarSeries).DataPoints)
           {
               if (chartViewItem.Value == gridViewItem.ID)
               {
                   chartViewItem.IsSelected = true;
               }
           }
       }
   }

Using the RemovedItems and AddedItems collections allows you to iterate trough and then depending on a custom logic to select what chart's data points to be selected as well.

Regards,
Peshito
Telerik

 

 

[Ahmed]

Thanks Peshito,,

The solution worked.