Hi Felix,
At this time, dynamic getters are not supported for value type. Therefore you will need to split the data up into lists that you can directly assign to the series' ItemsSource. Additionally, you may also need to determine what the type is so that you can create the appropriate axis for that given type (e.g. ScatterSeries uses two numerical axes, where as a BarSeries typically uses one numerical and one categorical).
However, you can use LINQ to easily group the items in the dictionary by type. Once you have the groups, create a series ItemsSource Chart for each one. I have created a simple example to illustrate the approach, below are the highlights
Demo
Here's the runtime result from the example below:
I have the page with a single StackLayout:
Here's the code-behind. In it I created the following Dictionary<dynamic, double> sample data and then build the Chart after grouping the data by type:
namespace DynamicData
{
public partial class MainPage : ContentPage
{
private Dictionary<object, double> dict;
public MainPage()
{
InitializeComponent();
CreateData();
CreateChartsUsingLinq();
}
private void CreateData()
{
dict = new Dictionary<dynamic, double>();
for (int i = 1; i < 5; i++)
{
// an item that could be rendered on a Categorical Axis
dict.Add($"Person {i}", i);
// an item that could be rendered on a DateTime Axis
dict.Add(DateTime.Now.AddDays(-i), i);
}
}
private void CreateChartsUsingLinq()
{
var groups = dict.GroupBy(x=>x.Key.GetType());
var dataLists = new List<MySeriesDataSource>();
// iterate over the groups to create a chart data source
foreach (var group in groups)
{
var seriesDataSource = new MySeriesDataSource
{
CategoryType = group.Key.ToString(),
Items = new List<ChartData>()
};
// iterate over the group's dictionary and get out the series data
foreach (var keyValuePair in group)
{
seriesDataSource.Items.Add(new ChartData
{
Category = keyValuePair.Key,
Value = keyValuePair.Value
});
}
dataLists.Add(seriesDataSource);
}
// Now we can create the chart(s) by iterating over the List
foreach (var seriesDataSource in dataLists)
{
var chart = new RadCartesianChart();
chart.VerticalAxis = new NumericalAxis();
// determine what kind of horizontal axis you need
if (seriesDataSource.CategoryType == "System.String")
{
chart.HorizontalAxis = new CategoricalAxis();
}
else if (seriesDataSource.CategoryType == "System.DateTime")
{
chart.HorizontalAxis = new DateTimeContinuousAxis();
}
// Create the series and set the bindings
var barSeries = new BarSeries();
barSeries.CategoryBinding = new PropertyNameDataPointBinding("Category");
barSeries.ValueBinding = new PropertyNameDataPointBinding("Value");
// Use the data
barSeries.ItemsSource = seriesDataSource.Items.ToList();
chart.Series.Add(barSeries);
// Add the chart to the UI
myStackLayout.Children.Add(chart);
}
}
}
}
Regards,
Lance | Tech Support Engineer, Sr.
Progress Telerik
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