[DevExpress Support Team: CLONED FROM T627912: WinForms Dashboard - How to configure the legend of the Pie Dashboard Item layout]
How to display the legend in Pie Items with NAME and values in the legend…for webforms… i already have controlupdate underlyng widgts… but… how I configure exactly…
thanks again!
Hi,
To enable the legend in Pie Dashboard items in the Web Dashboard application, use the approach demonstrated in the How to access API of underlying widgets in the Web Viewer example. The code used in that example only enables the legend and does not modify its content. So, the legend displays its default values - point arguments. If you wish to change the legend content, for instance display values or percent values you need to additionally use the legend.customizeText function:
JavaScriptfunction customizeWidgets(args) {
if (args.ItemName == "pieDashboardItem1") {
var pie = args.GetWidget()[0];
pie.option({
legend: {
customizeText: function(e) {
var legendText = *specify your own legend text*
return legendText;
},
visible: true
}
});
}
}
Though the legend.customizeText function does not provide access to the currently processed point's values, you can obtain the required Point instance directly form the widget and use this point's members (like originalArgument, originalValue, percent, etc) further to define the required legend text in the customizeText function:
JavaScriptcustomizeText: function(e) {
var legendText= e.pointName;
var points = pie.getSeriesByPos(0).getAllPoints()
var currentPoint = points.filter(function (point) {
return point.originalArgument === e.pointName;
});
if (currentPoint)
{
legendText= * define your custom text here based on currentPoint[0] fields*
}
return legendText;
},
Hi,
The Point object does not have the "value" property. Please follow my advice from the last post: I suggest you review the corresponding help topic ( Point) to learn more about information available in the point object. Also, I suggest you inspect the current point's members and their values in debug mode.
Hi John, I see documentation and tried change legend to bottom chart position…
visible: true,
verticalAlignment: bottom
but doesn't works…
and, How I format in currency format?
thanks again…
legendText = currentPoint[0].originalArgument + ": " + currentPoint[0].originalValue.toFixed(2);
Hi,
>> I see documentation and tried change legend to bottom chart position. but doesn't works…
The verticalAlignment property uses the string data type. If the "bottom" word in your code is a string constant, then you need to wrap it with apostrophes:
JavaScriptvisible: true,
verticalAlignment: 'bottom'
>>How I format in currency format?
You can use the Globalize.formatCurrency method from the Globalize library to perform formatting in a standard manner.
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