Having problem with very basic SilverLight LineSeries graph

I been stack for the last few days trying to figure out the SilverLight 4 LineSeries graph, for some strange reason the graph being displayed but the line not being displayed. I am pretty sure that my mistake is something very basic but I been straggling to pinpoint the problem by myself.

Bellow is the code that I having problem with.

<toolkit:Chart HorizontalAlignment="Left" x:Name="chartLine" Margin="31,35,0,0" Title="Chart for test" VerticalAlignment="Top" Height="233" Width="309">
        <toolkit:LineSeries IsSelectionEnabled="True" HorizontalAlignment="Left" DependentValuePath="Y" IndependentValuePath="X" Margin="195,49,0,0" Name="lineSeries1" VerticalAlignment="Top" Height="78" Width="130">
                <toolkit:LineSeries.ItemsSource>          
                    <PointCollection>
                        <Point>1,10</Point>
                        <Point>2,20</Point>
                        <Point>3,30</Point>
                        <Point>4,40</Point>
                    </PointCollection>        
            </toolkit:LineSeries.ItemsSource>        开发者_运维问答   

        </toolkit:LineSeries>           
        </toolkit:Chart>

I would also apreciate if anyone can point me to some code example with scrollable graph on Silverlight.

Thank you in advance.

Here's the corrected XAML. Your problem is the HorizontalAlignment/VerticalAlignment/Margin/Width/Height you have set in the LineSeries. Removing these fixes the problem.

Here's the complete XAML which shows the Chart with the lines properly placed.

<UserControl x:Class="SilverlightApplication1.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:toolkit="clr-namespace:System.Windows.Controls.DataVisualization.Charting;assembly=System.Windows.Controls.DataVisualization.Toolkit"
    mc:Ignorable="d"
    d:DesignHeight="300" d:DesignWidth="400">

    <Grid x:Name="LayoutRoot" Background="White">
    <toolkit:Chart HorizontalAlignment="Left" x:Name="chartLine" Margin="31,35,0,0" Title="Chart for test" VerticalAlignment="Top" Height="233" Width="309">
      <toolkit:LineSeries IsSelectionEnabled="True" DependentValuePath="Y" IndependentValuePath="X" Name="lineSeries1">
        <toolkit:LineSeries.ItemsSource>
          <PointCollection>
            <Point>1,10</Point>
            <Point>2,20</Point>
            <Point>3,30</Point>
            <Point>4,40</Point>
          </PointCollection>
        </toolkit:LineSeries.ItemsSource>
      </toolkit:LineSeries>
    </toolkit:Chart>
  </Grid>
</UserControl>