<Grid x:Name="LayoutRoot">

    <Grid.RowDefinitions>

      <RowDefinition />

      <RowDefinition Height="Auto" />

    </Grid.RowDefinitions>

    <c1chart:C1Chart x:Name="chart" ></c1chart:C1Chart>

    <ScrollBar x:Name="sb" Orientation="Horizontal" Grid.Row="1" />

</Grid>

// create some data

      int npts = 1000;

      double[] x = new double[npts], y = new double[npts];

      for (int i = 0; i < npts; i++)

      {

        x[i] = i; y[i] = 100 * Math.Sin(0.1 * i) * Math.Cos(0.01 * i);

      }

      // add data to the chart

      chart.Data.Children.Add(new XYDataSeries() { XValuesSource = x, ValuesSource = y });

      chart.ChartType = ChartType.Line;

      // setup axis

      double xscale = 0.05; // show only 1/20 of the full data range

      chart.View.AxisX.Min = 0; chart.View.AxisX.Max = npts-1;

      chart.View.AxisX.Scale = xscale;

      sb.Minimum = 0; sb.Maximum = 1;

      sb.SmallChange = 0.5*xscale; sb.LargeChange = xscale;

      sb.ViewportSize = 1.0 / (1.0 - xscale) - 1.0;

      // connect axis with toolbar

      sb.ValueChanged += (s, e) => chart.View.AxisX.Value = sb.Value;