Steema Central

Posted: **Tue Feb 12, 2008 9:41 am**

Hi,

Please could someone explain how to add ToolTips (on a mouse over) to a line series (i.e. steema.teechart.styles.line). I've had a look at the help guide, demos as well as the tutorial (no. 18) but I can't get it to work. I'm using v3 in a webform and the tempchart property is set to file. So far I have the following (it's been simplified for the sake of brevity) and it works ok:

Code: Select all

Dim timeSeries As New Steema.TeeChart.Styles.Line
With timeSeries
   .Color = Color.Blue
   With .Pointer
      .Style = Steema.TeeChart.Styles.PointerStyles.Circle
      .HorizSize = 2
      .VertSize = 2
      .Visible = True
   End With
   .Title = "My Series"
   .XValues.DateTime = True
End With

Dim timeSeriesAxis As New Steema.TeeChart.Axis
With timeSeriesAxis
   .AxisPen.Color = Color.Blue
   .StartPosition = 0
   .EndPosition = 100
   .Horizontal = False
   .OtherSide = False
   With .Title
      .Angle = 90
      .Caption = "My Series"
      .Font.Color = Color.Blue
   End With
   .Ticks.Color = Color.Blue
End With

' Add series
WebChart.Chart.Series.Add(timeSeries)

' Add custom axis
WebChart.Chart.Axes.Custom.Add(timeSeriesAxis)

' Specify custom vertical axis for series
timeSeries.CustomVertAxis = timeSeriesAxis

' Add points to series
While MyDataSource.MoveNext
   timeSeries.Add(x, y) 'x = date, y = double
End While

What do I have to add to the above to get ToolTips to show.

Thanks,

Norman

Posted: **Tue Feb 12, 2008 10:17 am**

Hi Norman,

You should use SeriesHotspot tool as shown at the List of Features\Interacting with Charts\Mouseover Hints examples in the live ASP.NET demo. Also notice that full demo project is included with TeeChart's installation.

Hope this helps!

Posted: **Tue Feb 12, 2008 11:08 am**

Hi,

I tried to follow that example to no avail (before posting my initial post). Could you indicate how to use SeriesHotspot in the context of the code I supplied previously? Please note I'm using VB.NET.

Thanks,

Norman

Posted: **Tue Feb 12, 2008 11:12 am**

Hi Norman,

You could just add the tool at design-time, right-clicking on the webchart, selecting "edit" and go to the "tools" tab.

Posted: **Tue Feb 12, 2008 2:25 pm**

Hi Narcís,

Thanks for your help. I got it to work by adding it at design time as you instructed. Is it possible to customise what is displayed in the tooltip? When the style is set to 'X and Y' I'd like to format the date and time so the date and time will always appear in dd/mm/yyyy hh:mm:ss format irrespective of the time frame I'm viewing.

Thanks for your continued assistance,

Norman

Posted: **Tue Feb 12, 2008 2:36 pm**

Hi Norman,

Yes, you can use the GetHTMLMap event as in the Modify Standard Mark Text example in the demo's section I pointed you before.

Steema Central

Adding ToolTips to series

Adding ToolTips to series

Adding ToolTips to series (cont)