Displaying annotation off-chart using primary datetimeaxis

[Joe OShea]

Hi,

I have a chart with a DateTimeAxis as the x-axis, and NumericalAxis as the Y-axis.

My aim is to draw a ViewAnnotation off-chart and above a specified DateTime. See the mockup image below for what I'm trying to achieve - annotation is the label above X: "00:00".

Here's my progress:

I've set the annotation's CoordinateUnit to pixels in order to draw it outside of the chart area. Which means I need to convert the DateTime value into a pixel value. I've tried using the ValueToPoint method on the chart, i.e:

annotation.X1 = chart.ValueToPoint(chart.PrimaryAxis, ??? );

But I can't seem to figure out how to convert my datetime to a double value, and OADate doesn't seem to give the correct value when I try using it.

Any help to build on my attempt or to suggest an entirely different solution would be great,

Thanks!

[Gayathri Manickam]

HI Joe OShea, 

 

Currently we are validating the reported query and we will update you the complete details on 31st January 2022. 

 

Thanks, 

Gayathri M. 

[Joe OShea]

Hi,

Just an update but I've managed to fix my issue, and I'm not entirely sure why! 

Using OADate & ValueToPoint seem to work as intended.

Thanks for looking into it anyway

[Gayathri Manickam]

Hi Joe OShea,  

 

We are glad to hear that you have resolved the reported issue. Please let us know if you have any further assistance on this. 

 

Regards,  

Gayathri M