Determine Layer Axis when Data Clicked. | Infragistics Forums

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Determine Layer Axis when Data Clicked.

Ian posted over 16 years ago

Hi,

I have a multilayered Composite which displays multiple linecharts on a shared Xaxis with multiple Yaxis. I do not display any axis lables on the Y Axis as they would obviously overlap. What I would like to do is use the ChartDataClicked Event to display that particular layers axis labels. Does anyone know how to obtain the current axis from the eargs returned from an ChartDataClicked event.

What I need is to find a ChartLayerAppearance class from the eargs so I can set the ItemFormatString.

Code I have so far:

this.ultraChart1.ChartDataClicked += ShowAxisLabels;

.

.

private void ShowAxisLabels(object sender, ChartDataEventArgs eargs)

{

}

Many Thanks,

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17605

Teodor Taushanov posted over 16 years ago

I'm not really sure what you want to do, but try looking at the following code:
private void ultraChart1_ChartDataClicked(object sender, Infragistics.UltraChart.Shared.Events.ChartDataEventArgs eargs)
{
if (eargs.Primitive == null)
{
return;
}
Layer layer = eargs.Primitive.Layer as Layer;
LineChartAppearance chartApp = layer.GetAppearance() as LineChartAppearance;

}
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100

Ian posted over 16 years ago in reply to Teodor Taushanov

Hi,

Thanks for that, I can return a LineChartAppearance but what i would like is the ChartLayerAppearance for this layer and I can't figure out how to retreive it.
At the moment my composite line chart has no Y axis labels. The senario I am after is that after a user clicks or hovers on a datapoint the labels will be displayed for that axis i.e. i need to be able to execute:
layer.AxisY.Labels.ItemFormatString = "<DATA_VALUE:0.#>";

If you can suggest a better way to do this, or some standard setting that im missing Id be most grateful. As it stands I either have the option of overlapping Y axis labels or none at all.

Thanks,
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17605

Teodor Taushanov posted over 16 years ago in reply to Ian

In this case you can try:
private void ultraChart1_ChartDataClicked(object sender, Infragistics.UltraChart.Shared.Events.ChartDataEventArgs eargs)
{
if (eargs.Primitive == null)
{
return;
}
Layer layer = eargs.Primitive.Layer as Layer;

foreach (ChartLayerAppearance chartLayerApp in this.ultraChart1.CompositeChart.ChartLayers)
{
if (chartLayerApp.Key == layer.LayerID)
{
chartLayerApp.AxisY.Labels.ItemFormatString = "<DATA_VALUE:0.#>";
}

}

}
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