YAxis click event not working

[Chris]

I'm having trouble making the X-axis labels clickable in an asp.net stacked bar chart (sorry, said y-axis in the subject). Using the code below, they don't even get added to the area map and become clickable, let alone the event fire. If I uncomment the url, they become clickable and send me to the default page so I think I'm dealing with the correct chart elements, but I want postback event and to be able to access the label specific values and react to them. What am I doing wrong?

protected void RadChart2_Load(object sender, EventArgs e)
{
    foreach (ChartAxisItem axisItem in this.RadChart2.PlotArea.XAxis.Items)
    {
        axisItem.ActiveRegion.Tooltip = "Click Me";
        //axisItem.ActiveRegion.Url = "Default.aspx";
        axisItem.ActiveRegion.Click += new RegionClickEventHandler(ActiveRegion_Click);
    }
}

[Richard]

Chris:

You did not specify here what it is that you want to do with the value accessed from the AxisItem. But, you might want to take a look at the
RadChart - Create a Drill-Down Chart TelerikTV video. It provides an interesting way to capture an AxisItem value using the tooltip, and on the RadChart click event, store it into a session variable. Then, in this case to use the session parameter in a SQL Stored Procedure to populate the second drilldown chart.

See the "radchartclick.png" screen capture for the pertinent code.

Hope this helps!

[Chris]

I tried the method you suggested Jumpstart, but I just cannot seem to make the x-axis labels become clickable except to configure them all to go to a single URL.

I'm using the radchart.click event currently to react to the user clicking the stacked bar segments and allow them to filter down to a single series. I want to make the labels (which are date/hour ranges) clickable to drill down to a single range and display that hour in minutes.

Everything's working, except as I said above, those x-axis labels will simply not register as clickable using radchart.click or chartaxisitem.activeregion.click.

[Petar Marchev]

Hi,

The RadChart in asp.net ajax is being rendered as an image on the server and sent to the client. That being the case - it is not possible to attach a handler to an event and later react to it.

However, there are ways to find out if an axis item was clicked. I have attached a sample project to demonstrate one approach. Some javascript is involved and passing string arguments, which you may use to pass information. 

References:
Ensure __doPostBack is implemented

All the best,
Petar Marchev
the Telerik team

[Chris]

Thank you. I was able to achieve the functionality I wanted by manually attaching a client side click event with a __dopostback call.

I do however think it seems like a workaround for a bug or missing functionality in the chart control. I think if you provide a click even to attach to, the control should recognize that and generate a proper imagemap area tag and necessary javascript code to perform the postback, even if it all gets fed into a single RadChart_Click method as opposed to individual event handlers.