C1Chart1.Theme = ChartTheme.Office2003Classic

Dim dt As New DataTable()

dt.Columns.Add("Name", GetType(String))

dt.Columns.Add("Value", GetType(Double))

dt.Rows.Add("Apples", 20R)

dt.Rows.Add("Oranges", 10R)

dt.Rows.Add("Peaches", 7R)

chart.Data.ItemNameBinding = New Binding("Name")

chart.Data.Children.Add(New DataSeries())

chart.Data.ItemsSource = dt.DefaultView

chart.ChartType = ChartType.Pie

DataTable dt = new DataTable();

dt.Columns.Add("Name", typeof(string));

dt.Columns.Add("Value", typeof(double));

dt.Rows.Add("Apples", 20.0);

dt.Rows.Add("Oranges", 10.0);

dt.Rows.Add("Peaches", 7.0);

chart.Data.ItemNameBinding = new Binding("Name");

chart.Data.Children.Add(new DataSeries() { ValueBinding = new Binding("Value") });

chart.Data.ItemsSource = dt.DefaultView;

chart.ChartType = ChartType.Pie;