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Is there a way to show tooltip on line serie when select the data point?

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120717 Oct 7,2015 06:05 PM UTC Oct 12,2015 11:43 AM UTC Xamarin.Forms 6
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Tags: SfChart
Xiaopeng Qi
Asked On October 7, 2015 06:05 PM UTC

Could you give an example for how to do it, if possible? Thanks!

Xiaopeng Qi
Replied On October 7, 2015 06:08 PM UTC

What I need is, when clicking on the data point of line serie on the sfchart, it shows the XValue and YValue on the tooltip

Karthikeyan V [Syncfusion]
Replied On October 8, 2015 09:01 AM UTC

Hi Xiaopeng,

Thank for using Syncfusion products.

We are able to achieve the reported Tooltip requirement with the help of ChartTrackballBehavior. Please refer the below code example which shows the tooltip in series.


CodeSnippet:

ChartTrackballBehaviorExt trackBall = new ChartTrackballBehaviorExt();
trackBall.LabelStyle = new ChartTrackballLabelStyle();
trackBall.LabelStyle.BackgroundColor = Color.Gray;
trackBall.LabelDisplayMode = TrackballLabelDisplayMode.FloatAllPoints;
trackBall.ShowLine = false;
chart.ChartBehaviors.Add(trackBall);


We have prepared a sample based on your requirement. Please download the sample in the following location.

 

Sample: http://www.syncfusion.com/downloads/support/forum/120717/ze/TooltipsCustomize68503948

 

Please let us know if you have any further assistance on this.

 

Thanks,
Karthikeyan V.


Xiaopeng Qi
Replied On October 8, 2015 06:36 PM UTC

Karthikeyan,

Thanks a lot for creating the sample codes. I will try it soon and let you know if it works in my project.

One question, I see you have custom renderer for both Android and WinPhone, do I need renderer for iOS? 


Xiaopeng

Manivannan Elangovan [Syncfusion]
Replied On October 9, 2015 12:31 PM UTC

Hi Xiaopeng,

We will wait until we hear from you.

For iOS, there is no need to write custom renderer, instead of that custom delegate is used.

Regards,
Manivannan.E

Xiaopeng Qi
Replied On October 9, 2015 11:40 PM UTC

Karthikeyan and Manivannan,

The codes works great on both iOS and Android. Thanks a lot for the efforts you guys put on to help us!!!

Xiaopeng

Manivannan Elangovan [Syncfusion]
Replied On October 12, 2015 11:43 AM UTC

Hi Xiaopeng,

Thanks for the update. Please let us know if you have any query.

Regards,
Manivannan.E

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