A simple problem .. I need to insert an ExtendedData property dynamically during runtime based on a user selection. (Or, I could hack it and change the value of an existing extended property - I don't really care at this point). I tried added the new property in the PreviewReadShapesCompleted event, but the colorizer doesn't recognize it. Even if I change an existing ExtendedData property's value, the colorizer does not reset it's range.
Is there some way to refresh the colorizer? I've tried setting a MinValue and MaxValue and binding the colorizer's Min and Max values to them but that doesn't work either.
For example, using the sample from WPF SDK for InformationLayerColorizerModeCount (world.shp/world.dbf) , I change the value of the "SQKM" property in the InformationLayerColorizerModeCount event by dividing it by 10. When the map shows, all countries are pretty much the same color. If I divide it by 5, there is more variation in color, but not as much. If I multiply it by 10, than all countries are dark with little or no variation.
Debugging shows me that ColorMeasureScale_PrepareCompleted fires before the PreviewReadShapesCompleted event and apparently sets it range of values from the original DBF values.
I tried to read the shape files in manually ( http://docs.telerik.com/devtools/wpf/controls/radmap/features/information-layer/shapefiles-support) ) , modify the stream, and pass that into the ShapeReader, but the "shapes" do not contain an ExtendedPropertySet so I can't manipulate the values.
StreamResourceInfo shapeResourceInfo = Application.GetResourceStream(new Uri("/InformationLayerColorizerModeCount;component/Resources/world.shp", UriKind.RelativeOrAbsolute));
StreamResourceInfo dbfResourceInfo = Application.GetResourceStream(new Uri("/InformationLayerColorizerModeCount;component/Resources/world.dbf", UriKind.RelativeOrAbsolute));
Telerik.Windows.Controls.Map.ExtendedPropertySet extData = new ExtendedPropertySet();
> shapes = new List<
var x = ShapeFileReader.Read(shapeResourceInfo.Stream, dbfResourceInfo.Stream);
foreach (var shape in shapes)
In the foreach loop, I want to grab a value from my model for the specific country, and then either change the value of an existing ExtendedData or create a new one, but the "shape" instance does not have any property that allows me to do this despite the fact that I included the DBF file in the Read method.
Maybe I should use a different technique altogether ? It seems that this requirement would be quite common, i.e. user picks a variable, program colorizes the map according to that variable. What am I missing ?