Public Property Geometry As Geometry

public Geometry Geometry {get; set;}

<Grid x:Name="LayoutRoot">
  
  <!-- Define a SimpleMarkerSymbol and a SpatialReference in the Resources section of the XAML file. -->
  <Grid.Resources>
  
    <!-- 
    Tip: Use x:Key Attribute and not x:Name Attribute for defining the name of the Resources so that
    you can access the Resource in the code-behind file. 
    -->
    
    <!-- The 'RedMarkerSymbol' will be used as the default symbol for the Graphics. -->
    <esri:SimpleMarkerSymbol x:Key="RedMarkerSymbol" Color="Red"/>
    
    <!-- 
    Define a SpatialReference object that has the same WKID as the ArcGISTiledMapServiceLayer in
    the Map. This will allow for the Graphics in the GraphicsLayer to line up properly. 
    -->
    <esri:SpatialReference x:Key="theSpatialReference" WKID="4326"/>
    
  </Grid.Resources>
  
  <!-- 
  Add a Map control with an ArcGISTiledMapServiceLayer and a GraphicsLayer. The GraphicsLayer will
  contain several Graphics based upon MapPoint geometries (which use the defined SpatialReference) 
  and using the RedMarkerSymbol as the default symbolization. 
  -->
  <esri:Map Background="White" HorizontalAlignment="Left" Margin="14,94,0,0" Name="Map1" 
            VerticalAlignment="Top" Height="318" Width="483" >
          
    <esri:ArcGISTiledMapServiceLayer ID="PhysicalTiledLayer" 
                 Url="http://services.arcgisonline.com/ArcGIS/rest/services/ESRI_StreetMap_World_2D/MapServer"/>
      
    <!-- 
    It is important to provide the GraphicsLayer with an 'ID' Attribute so to be able to access it
    in the code-behind file. 
    -->
    <esri:GraphicsLayer ID="MyGraphicsLayer" >
      
      <esri:GraphicsLayer.Graphics>
        
        <!-- Each Graphic added to the GraphicsLayer will have it's symbology and geometry defined. -->
                    
        <esri:Graphic Symbol="{StaticResource RedMarkerSymbol}">
          <esri:MapPoint X="-10" Y="-20" SpatialReference="{StaticResource theSpatialReference}"/>
        </esri:Graphic>
          
        <esri:Graphic Symbol="{StaticResource RedMarkerSymbol}">
          <esri:MapPoint X="-5" Y="0" SpatialReference="{StaticResource theSpatialReference}"/>
        </esri:Graphic>
        
        <esri:Graphic Symbol="{StaticResource RedMarkerSymbol}">
          <esri:MapPoint X="-25" Y="10" SpatialReference="{StaticResource theSpatialReference}"/>
        </esri:Graphic>
        
      </esri:GraphicsLayer.Graphics>
    </esri:GraphicsLayer>
  </esri:Map>
  
  <!-- Add a Button to perform the work. Note the Click Event handler is wired-up to use code-behind. -->
  <Button Content="Move the MapPoint by a random number between (-5 and + 5) in the X and Y directions" 
          Height="23" HorizontalAlignment="Left" Margin="5,65,0,0" Name="Button1" 
          VerticalAlignment="Top" Width="499" Click="Button1_Click"/>
    
  <!-- Provide the instructions on how to use the sample code. -->
  <TextBlock Height="47" HorizontalAlignment="Left" Name="TextBlock1" VerticalAlignment="Top" Width="616" 
             TextWrapping="Wrap" Margin="12,12,0,0" 
             Text="Click the button several times to move the MapPoint Graphics randomly around on the screen. 
             The Graphics were originally defined in XAML and the movement occurs from changing the 
             Graphics Geometry in the code-behind file." />
  
</Grid>

private void Button1_Click(object sender, System.Windows.RoutedEventArgs e)
{
  // Move the MapPoint Graphic by a random number between (-5 and + 5) in the X and Y directions
  
  // Obtain the GraphicsLayer that was defined in XAML. 
  ESRI.ArcGIS.Client.GraphicsLayer theGraphicsLayer = null;
  theGraphicsLayer = (ESRI.ArcGIS.Client.GraphicsLayer)(Map1.Layers["MyGraphicsLayer"]);
   
  // Get the GraphicCollection from the GraphicsLayer
  ESRI.ArcGIS.Client.GraphicCollection theGraphicsCollection = theGraphicsLayer.Graphics;
  
  // Loop through all of the individual Graphic objects in the GraphicsCollection.
  foreach (ESRI.ArcGIS.Client.Graphic aGraphic in theGraphicsCollection)
  {
    // Get the Geometry from the Graphic and cast it to a MapPoint.
    ESRI.ArcGIS.Client.Geometry.MapPoint oldMapPoint = null;
    oldMapPoint = (ESRI.ArcGIS.Client.Geometry.MapPoint)aGraphic.Geometry;
    
    // Generate a random number for the X and Y coordinates (bounded between 0 and 5).
    System.Random aRandom = new System.Random();
    int aRandomNumberX = aRandom.Next(0, 5);
    int aRandomNumberY = aRandom.Next(0, 5);
    
    // Generate a random number for positive and negative values (i.e either -1 or +1)
    float makePositiveorNegative = (float)(Microsoft.VisualBasic.VBMath.Rnd(3));
    int theNegator = 0;
    if (makePositiveorNegative > 0.5)
    {
      theNegator = 1;
    }
    else
    {
      theNegator = -1;
    }
    
    // Create a new MapPoint using the cooordinates from the original Graphics MapPoint that
    // is offset by a random number between (-5 and +5)
    ESRI.ArcGIS.Client.Geometry.MapPoint newMapPoint = new ESRI.ArcGIS.Client.Geometry.MapPoint();
    newMapPoint.X = oldMapPoint.X + (theNegator * aRandomNumberX);
    newMapPoint.Y = oldMapPoint.Y + (theNegator * aRandomNumberY);
    
    // Set the Geometry of the Graphic to the new coordinates. By changing the Graphic's Geometry
    // it automatically moves on the Map Control (no Map refresh is required).
    aGraphic.Geometry = newMapPoint;
  }
}

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs)
  
  ' Move the MapPoint Graphic by a random number between (-5 and + 5) in the X and Y directions
  
  ' Obtain the GraphicsLayer that was defined in XAML. 
  Dim theGraphicsLayer As ESRI.ArcGIS.Client.GraphicsLayer
  theGraphicsLayer = CType(Map1.Layers("MyGraphicsLayer"), ESRI.ArcGIS.Client.GraphicsLayer)
  
  ' Get the GraphicCollection from the GraphicsLayer
  Dim theGraphicsCollection As ESRI.ArcGIS.Client.GraphicCollection = theGraphicsLayer.Graphics
  
  ' Loop through all of the individual Graphic objects in the GraphicsCollection.
  Dim aGraphic As ESRI.ArcGIS.Client.Graphic
  For Each aGraphic In theGraphicsCollection
    
    ' Get the Geometry from the Graphic and cast it to a MapPoint.
    Dim oldMapPoint As ESRI.ArcGIS.Client.Geometry.MapPoint
    oldMapPoint = CType(aGraphic.Geometry, ESRI.ArcGIS.Client.Geometry.MapPoint)
    
    ' Generate a random number for the X and Y coordinates (bounded between 0 and 5).
    Dim aRandom As New System.Random
    Dim aRandomNumberX As Integer = aRandom.Next(0, 5)
    Dim aRandomNumberY As Integer = aRandom.Next(0, 5)
    
    ' Generate a random number for positive and negative values (i.e either -1 or +1)
    Dim makePositiveorNegative As Single = Rnd(3)
    Dim theNegator As Integer
    If makePositiveorNegative > 0.5 Then
      theNegator = 1
    Else
      theNegator = -1
    End If
    
    ' Create a new MapPoint using the coordinates from the original Graphics MapPoint that
    ' is offset by a random number between (-5 and +5)
    Dim newMapPoint As New ESRI.ArcGIS.Client.Geometry.MapPoint
    newMapPoint.X = oldMapPoint.X + (theNegator * aRandomNumberX)
    newMapPoint.Y = oldMapPoint.Y + (theNegator * aRandomNumberY)
    
    ' Set the Geometry of the Graphic to the new coordinates. By changing the Graphic's Geometry
    ' it automatically moves on the Map Control (no Map refresh is required).
    aGraphic.Geometry = newMapPoint
    
  Next
  
End Sub