score:0

for tooltips try something like this:

mylinechart.data.labels = labels; //change all labels
mylinechart.update();

or

mylinechart.data.labels[0] = 'new label';
mylinechart.update();

score:0

for vb.net, make sure it's all built as a string.

var radaroptions = {
    multitooltiptemplate: "<" + "%= datasetlabel %> - " + "<" + "%= value %>"
}

score:0

angular 2 i have initilized chartlabel on every click of graph display. this.linechartlabels=[]; i have put condition in div ,untill data comes to chartlabels ,do not render the graph

<div *ngif="linechartlabels!=0"> it works for me

score:1

instead of try like that, you just put your code within chart options. it will work fine.

example:

var radaroptions = {
  multitooltiptemplate: "<%= datasetlabel %> - <%= value %>"
}
var ctx = document.getelementbyid("radarchart").getcontext("2d");//radarchart is the canvasid for radar chart//
var mynewchart = new chart(ctx).radar(radardata, radaroptions);

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