Question

i have these double values:

 public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
            double num1 = 50.0;
            double num2 = 90.0;
            double num3 = 120.0;
            double num4 = 20.0;
            double num5 = 80.0;

        }
    }

how do i bind them to xaml?

<vc:Chart.Series>
                <vc:DataSeries RenderAs="Column" AxisYType="Primary" >
                    <vc:DataSeries.DataPoints>
                        <vc:DataPoint AxisXLabel="Wall-Mart" YValue="{Binding Source={StaticResource num1}}" />

....

help please

Answer 1

You can’t. They are variables with scope local to window constructor. You might want to turn them into public static fields like this:

public static readonly double Num1 = 50.0;

… and then reference them in XAML using {x:Static} markup extension like so:

<vc:DataPoint AxisXLabel="Wall-Mart" YValue="{x:Static local:Window1.Num1}" />

Alternatively, you may want to turn them into properties if they are meant to be changed like:

public double Num1 { get; set; }

<vc:DataPoint AxisXLabel="Wall-Mart" YValue="{Binding Num1,RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type Window}}}" />

Ultimately, you may make them a DependencyProperty if changes are to be automatically detected by XAML UI.