Hello Melvin,
Here is a sample code snippet that demonstrates how to declare the mappings in the viewmodel and bind them to the chart instance in XAML:
XAML
C#
using System.Collections.Generic;
using System.Windows.Controls;
using Telerik.Windows.Controls;
using Telerik.Windows.Controls.Charting;
namespace SilverlightApplication1
{
public partial class MainPage : UserControl
{
public MainPage()
{
InitializeComponent();
}
}
public class ViewModel : ViewModelBase
{
private SeriesMappingCollection mappings;
public ViewModel()
{
var temp = new SeriesMappingCollection();
var sm = new SeriesMapping();
sm.SeriesDefinition = new StackedBarSeriesDefinition();
sm.ItemMappings.Add(new ItemMapping("Category", DataPointMember.XCategory));
sm.ItemMappings.Add(new ItemMapping("Data", DataPointMember.YValue));
sm.ItemsSource = new List<ChartData>()
{
new ChartData("C1", 1),
new ChartData("C2", 5),
new ChartData("C3", 7)
};
temp.Add(sm);
var sm2 = new SeriesMapping();
sm2.SeriesDefinition = new StackedBarSeriesDefinition();
sm2.ItemMappings.Add(new ItemMapping("Category", DataPointMember.XCategory));
sm2.ItemMappings.Add(new ItemMapping("Data", DataPointMember.YValue));
sm2.ItemsSource = new List<ChartData>()
{
new ChartData("C1", 10),
new ChartData("C2", 7),
new ChartData("C3", 18)
};
temp.Add(sm2);
this.Mappings = temp;
}
public SeriesMappingCollection Mappings
{
get
{
return this.mappings;
}
set
{
if (this.mappings != value)
{
this.mappings = value;
this.OnPropertyChanged("Mappings");
}
}
}
}
public class ChartData
{
public ChartData(string c, double d)
{
this.Category = c;
this.Data = d;
}
public string Category { get; set; }
public double Data { get; set; }
}
}
Greetings,
Bart.