ChartToolTipBehavior LabelFormat

[Albert K]

Hi,

I have a DateTimeAxis as the PrimaryAxis  and a NumbericAxis as the SecondaryAxis.  How do I display the DateTime and Values in the tooltip ?  

Ii have the code below but it is not displaying the Date and Time.   Thank you.

chartTop.Behaviors.Add(new ChartTooltipBehavior() { LabelFormat = "dd/MM/yy hh:mm" });

[Parthiban Sundaram]

Hi Albert, 

  

Thanks for using Syncfusion products. 

  

You can achieve this requirement by overriding the GetView method in ChartTooltipBehavior class. Please refer the following code snippet for more details. 

  

Code Snippet: 

 

   protected override View GetView(TooltipView tooltipView) 

        { 

            LinearLayout rootLayout = new LinearLayout(Chart.Context); 

            LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MatchParent, 

                    LinearLayout.LayoutParams.MatchParent); 

            rootLayout.Orientation = Orientation.Vertical; 

            rootLayout.LayoutParameters = layoutParams; 

            TextView xLabel = new TextView(Chart.Context); 

            string date = (tooltipView.ChartDataPoint as DataModel).XValue.ToString(); 

            var doubleToDate = DateTime.FromOADate(Convert.ToDouble(date)); 

            var formattedDate = doubleToDate.ToString("dd/MM/yy hh:mm"); 

            xLabel.Text = "Date:" + formattedDate.ToString(); 

            xLabel.TextSize = 15; 

            xLabel.SetTextColor(Color.White); 

            TextView yLabel = new TextView(Chart.Context); 

            yLabel.Text = "YValue: " + (tooltipView.ChartDataPoint as DataModel).YValue.ToString(); 

            yLabel.TextSize = 15; 

            yLabel.SetTextColor(Color.White); 

            rootLayout.AddView(xLabel); 

            rootLayout.AddView(yLabel); 

            tooltipView.AddView(rootLayout); 

            return tooltipView; 

        } 

  

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

  

Sample: http://www.syncfusion.com/downloads/support/forum/132954/ze/ToolTipSample364475617  

  

Please let us know, if you need further assistance on this. 

  

Regards,
Parthiban S