Home / Community & Support / Developer Productivity Tools Forums / WinForms > Chart > how to find Line Chart Data items Active Region

• kiran

  Posted on Jun 26, 2008 (permalink)

  Hi Telerik Team,
  
  I am unable to find line chart data items active region points.(X,Y) values.
  i used the following code to find the active region.
  
  

  ChartSeriesItemsCollection

  items = radChart1.Series[1].Items;
  for (int i = 0; i < items.Count; i++)
  {
      MessageBox.Show(items[i].ActiveRegion.Region.GetLastPoint().X.ToString());
      MessageBox.Show(items[i].ActiveRegion.Region.GetLastPoint().Y.ToString());
  }

  Please help me out. i need these points X and Y values. Please share some sample application to get the active region points.
  
  Any help is highly appreciated.
  
  Regards,
  Kiran
  

  Reply

• Dwight Dwight

  Posted on Jun 30, 2008 (permalink)

  Hi kiran,
  
  The items' ActiveRegion usually occupies a wider area than a single point. The easiest way to obtain a point is to retrieve the bounds of the region (which is a rectangular area) and get the center point:
  

  private List<Point> RetrieveSeriesPoints(ChartSeries series)

  {

  if (series == null)

  return null;

  List<Point> itemPoints = new List<Point>();

  foreach (ChartSeriesItem item in series.Items)

  {

  RectangleF regionBounds = item.ActiveRegion.Region.GetBounds();

  Point position = new Point((int)(regionBounds.Left + regionBounds.Width / 2), (int)(regionBounds.Top + regionBounds.Height / 2));

  itemPoints.Add(position);

  }

  return itemPoints;

  }

  
  All the best,
  Evtim
  the Telerik team

  
  Instantly find answers to your questions at the new Telerik Support Center

  Reply

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Home / Community & Support / Developer Productivity Tools Forums / WinForms > Chart > how to find Line Chart Data items Active Region