retrieving X-axis label on Itemdatabound event

[ChrisWalker]

I have a bar chart that displays just fine but need to add a tooltip for each "bar". The barchart's datasource returns two columns: item and percentComplete. When displayed, the item value is the X Axis label and the percentcomplete is the "value".
On both the itemdatabound and databound events, I was hoping to find the X axis label value so that I can run a query to get the information required for the tooltip text. However I cannot seem to find this value anywhere.

Example- a datasource row returns "Students" in column item and 33 for percent complete. The barchart's X axis label shows "Students" and the bar value is 33. However, on either the itemdatabound or databound event, I cannot find the value "Students" anywhere.

[Ves]

Hi ChrisWalker,

The ChartItemDataBoundEventArgs object, sent as second parameter to ItemDataBound event handler has a property DataItem. This property holds a reference to the underlying data, so you can extract any information you need. Here is an example:

protected void RadChart1_ItemDataBound(object sender, Telerik.Charting.ChartItemDataBoundEventArgs e)
    {
        string tooltip = (e.DataItem as DataRowView)["LabelsColumn"].ToString();
        e.SeriesItem.ActiveRegion.Tooltip = tooltip;
    }

Hope this helps.

Best wishes,
Ves
the Telerik team

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[ChrisWalker]

Excellent! Thank you- it works great.