Hi,

I'm trying to adapt the sample http://help.infragistics.com/Help/NetAdvantage/WPF/2012.2/CLR4.0/html/xamWebMap_Add_Image_Using_Map_Elements.html in my project.

The thing is, I want to create layers and associate Value Template dynamically to it for each map element of another layer containing my spatial datas.

My code:

XAML:

<ig:XamMap x:Name="xamMap" 
                   Loaded="XamMap_Loaded" 
                   ElementClick="XamMapElementClick"
                   MouseRightButtonDown="xamMap_MouseRightButtonDown"
                   IsZoomable="False"
                   IsPannable="False"
                   Background="Transparent">
            <ig:XamMap.Layers>
                <ig:MapLayer x:Name="UTElayer" FillMode="RandomInterpolate" VisibleFromScale="0">
                    <ig:MapLayer.Reader>
                        <ig:SqlShapeReader x:Name="UTEreader" DataMapping="Data=Coord_UTE;Name=Code_UTE;ToolTip=Nom_UTE">
                        </ig:SqlShapeReader>
                    </ig:MapLayer.Reader>
                </ig:MapLayer>
            </ig:XamMap.Layers>
        </ig:XamMap>

XAML.CS:

XamMap_Loaded

foreach (MapElement mapElement in xamMap.Layers["UTElayer"].Elements)
{
      // Change the mapElement origin point from a list of coordinates
      int indexOfCode = lookForIndex(mapElement.Name.ToString(), "UTE","centroids");
      Point pt = strToPoint(MapDataCentroids[indexOfCode]["Coord_Zone"]);
      mapElement.SymbolOrigin = xamMap.MapProjection.ProjectToMap(pt);
      // Create a layer for each mapElement containing a Value Template different for each mapElement
      SetDataTemplateOnLayer("UTE", mapElement);
      // Setting the SymbolElement to positionning the Value Template on each mapElement
      SetSymbolElementOnMapElement(mapElement);
}                  

SetDataTemplateOnLayer

private void SetDataTemplateOnLayer(string layer, MapElement elementCourant)
{
      MapLayer newLayer = new MapLayer();
      newLayer.Name = elementCourant.Name;
      DataTemplate dtTest = new DataTemplate();
      FrameworkElementFactory txtElement = new FrameworkElementFactory(typeof(TextBlock));
      txtElement.SetValue(TextBlock.TextProperty, "TEXTBLOCK DE TEST");
      dtTest.VisualTree = txtElement;
      newLayer.ValueTemplate = dtTest;
      xamMap.Layers.Add(newLayer);
}

SetSymbolElementOnMapElement

private void SetSymbolElementOnMapElement(MapElement elementCourant)
{
            SymbolElement symbElement = new SymbolElement()
            {
                SymbolOrigin = elementCourant.SymbolOrigin,
                Caption = "SymbolElement: "+elementCourant.Name,
                SymbolType = MapSymbolType.None,
                SymbolSize = 90
            };

            // Assign arbitrary value so that Value Template can be used
            symbElement.Value = 1;

            xamMap.Layers[elementCourant.Name].Elements.Add(symbElement);

            // Make enough space in layer for the added shape
            Rect worldRect = xamMap.Layers[elementCourant.Name].WorldRect;
            worldRect.Union(symbElement.WorldRect);
            xamMap.Layers[elementCourant.Name].WorldRect = worldRect;
}

When I run the program I get :

Only the SymbolElement Caption is displayed and my DataValue seems to disappear of the layer.

My question is simple: what's wrong with my code ? I can't figure out atm.

Hoping my demand is clear,
Many thanks for your answers.