I create and display ZedGraph in WinForm. When I draw correctly on the chart, there is an option for “show point values”. When this is turned on, hovering over a point will give the X / Y values for that point.
When your form is initialized, do something like:
var zgc = msGraphControl1.zedGraphControl1; zgc.IsShowPointValues = true; zgc.PointValueFormat = "0.000"; zgc.PointDateFormat = "d";
That should do it.