C# Code:
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:WPFControls="clr-namespace:WPFControls;assembly=WPFControls" x:Name="UserControl">

C# Code:
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:chartingToolkit="clr-namespace:System.Windows.Controls.DataVisualization.Charting;assembly=System.Windows.Controls.DataVisualization.Toolkit" x:Class="WPFControls.Chart"
mc:Ignorable="d" Width="991" Height="475">

C# Code:
public partial class Chart : UserControl
{
public Chart()
{
InitializeComponent();
m_Data = null;
m_Data_0 = null;
m_Data_1 = null;
m_Data_2 = null;
m_Data_3 = null;
m_Data_4 = null;
CurveArray = new KeyValuePair[][] { m_Data_0, m_Data_1, m_Data_2, m_Data_3, m_Data_4 };
for (int i = 0; i < CurveArray.Length; i++)
{
CurveArray= null;
}
}

//Data storage, containing the Value-Description pairs
private KeyValuePair[] m_Data, m_Data_0, m_Data_1, m_Data_2, m_Data_3, m_Data_4;
public KeyValuePair[][] CurveArray;
public double xPos { get; set; }
public double Value { get; set; }
public double which { get; set; }
public bool AddValueToCurve
{
get
{
return true;
}
set
{
AddValueToChart(xPos,Value,which);
}
}
private void AddValueToChart(double x_Po, double dblValue, double whichCurve)
{
int whichCurve_int = (int) whichCurve;
switch (whichCurve_int)
{
case 0:
{ m_Data = m_Data_0; break; }
case 1:
{ m_Data = m_Data_1; break; }
case 2:
{ m_Data = m_Data_2; break; }
case 3:
{ m_Data = m_Data_3; break; }
case 4:
{ m_Data = m_Data_4; break; }
case -1:
{
m_Data = null;
m_Data_0 = null;
m_Data_1 = null;
m_Data_2 = null;
m_Data_3 = null;
m_Data_4 = null;
return;
}
default:
{ m_Data = m_Data_0; break; }
}
if (m_Data == null)
{
m_Data = new KeyValuePair[1];
}
else
{
KeyValuePair[] new_Data = new KeyValuePair[m_Data.Length + 1];
System.Array.Copy(m_Data,new_Data,m_Data.Length);
m_Data = new_Data;
}
m_Data.SetValue(new KeyValuePair(xPos, Value), m_Data.Length - 1);

switch (whichCurve_int)
{
case 0:
{ m_Data_0 = m_Data; break; }
case 1:
{ m_Data_1 = m_Data; break; }
case 2:
{ m_Data_2 = m_Data; break; }
case 3:
{ m_Data_3 = m_Data; break; }
case 4:
{ m_Data_4 = m_Data; break; }
default:
{ m_Data_0 = m_Data; break; }
}
for (int i = 0; i < CurveArray.Length; i++)
{
if (CurveArray== null)
{
KeyValuePair[] new_Data = new KeyValuePair[1];
new_Data.SetValue(new KeyValuePair(0, 0),0);
CurveArray= new_Data;
}
}
CurveArray[0] = m_Data_0;
CurveArray[1] = m_Data_1;
CurveArray[2] = m_Data_2;
CurveArray[3] = m_Data_3;
CurveArray[4] = m_Data_4;
mainChart.DataContext = CurveArray;
mainChart.UpdateLayout();
}
}

C# Code:

IElement WPF = null; ;
try
{
WPF = this.DynPictures().Item("DotNet").Elements().Item("WPF-Element_1");
}
catch (Exception ex) { MessageBox.Show(ex.Message); }
if (WPF == null)
{
MessageBox.Show("WPF element not found");
}
else
{
// MessageBox.Show("WPF is something "+WPF.GetType() + " "+ WPF.ID.ToString() + " "+ WPF.Name );
}
WPF.Enable = true;

WPF.set_WPFProperty("mainChartie", "xPos", -780);
WPF.set_WPFProperty("mainChartie", "Value", 10);
WPF.set_WPFProperty("mainChartie", "which", 4);
WPF.set_WPFProperty("mainChartie", "AddValueToCurve", true);
WPF.set_WPFProperty("mainChartie", "xPos", 200);
WPF.set_WPFProperty("mainChartie","Value",100);
WPF.set_WPFProperty("mainChartie","AddValueToCurve", true);

WPF.set_WPFProperty("mainChartie", "which", 0);
WPF.set_WPFProperty("mainChartie", "xPos", 80);
WPF.set_WPFProperty("mainChartie", "Value", 50);
WPF.set_WPFProperty("mainChartie", "AddValueToCurve", true);
WPF.set_WPFProperty("mainChartie", "xPos", -20);
WPF.set_WPFProperty("mainChartie", "Value", 50);
WPF.set_WPFProperty("mainChartie", "AddValueToCurve", true);
WPF.Update();
}