How to SeriesRendered event and SfBusyIndicator in Xamarin Chart?
You can use the SeriesRendered event and SfBusyIndicator to know whether the chart series in Xamarin Charts is rendered when loading the large number of data
points in SfChart.
The following code sample demonstrates how to use the SeriesRendered event with the SfBusyIndicator. You can download the complete sample from the following link.
Xaml
<StackLayout> ……. <Button Text="Update ItemsSource" Clicked="Button_Clicked"/> <Grid HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand"> <chart:SfChart SeriesRendered="SfChart_SeriesRendered"> ……… <chart:SfChart.Series> <chart:FastLineSeries x:Name="fastline" XBindingPath="XValue" YBindingPath="YValue"/> </chart:SfChart.Series> </chart:SfChart> <syncfusion:SfBusyIndicator x:Name="busyindicator" AnimationType="SingleCircle" Title="Loading..." ViewBoxWidth="50" ViewBoxHeight="50" TextColor="Blue" /> </Grid> </StackLayout>
C#
private void Button_Clicked(object sender, EventArgs e)
{
busyindicator.IsBusy = true;
Task.Run(async () =>
{
await UpdateItemsSource();
});
}
private async Task UpdateItemsSource()
{
Task.Delay(300).Wait();
Device.BeginInvokeOnMainThread(() =>
{
fastline.ItemsSource = viewmodel.GenerateData();
});
}
private void SfChart_SeriesRendered(object sender, EventArgs e)
{
busyindicator.IsBusy = false;
}
Output
Conclusion
I hope you enjoyed learning how to SeriesRendered event and SfBusyIndicator in Xamarin Chart.
You can refer to our Xamarin. Forms Chart feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our Xamarin. Forms Charts example to understand how to create and manipulate data.
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