Last Updated: 27 Dec 2016 13:13 by ADMIN
MapPath shape doesn't support data binding on the level of the MapPathFigure and MapPathSegment in WPF.
This feature is implemented in the new visualization engine -Visualization layer and the bindable wrappers - PathView, PathVigureView, PathSegementView , etc.
Last Updated: 07 Feb 2020 16:13 by ADMIN
Release R1 2020

Recently OpenStreetMap changed their tile usage policy and require UserAgent string in the web headers for accessing tile.openstreetmap.org tiles.


As a result, standard open street map mode does not work - no tiles are loaded and "too many requests" error is returned from the server.

RadMap's OpenStreetMapProvider needs API (event, property or similar) for easier set up of UserAgent / Referer / other headers of web requests.

Currently, the workaround is to override the OpenStreetMapProvider like so:

    public class CustomOpenStreetProvider : OpenStreetMapProvider
        public CustomOpenStreetProvider()
            OpenStreetMapnikSource osmMapInkSource = this.MapSources.Values.ToList()[0] as OpenStreetMapnikSource;
            if (osmMapInkSource != null)
                osmMapInkSource.WebHeaders.Add(System.Net.HttpRequestHeader.UserAgent, "your custom user agent string");
Last Updated: 21 Oct 2019 07:59 by ADMIN
Release R3 2019 SP1

If XML of the KML file is not ordered properly (beautified with tabs and new lines), the AsyncKmlReader doesn't read all shapes.

To work this around, beautify the KML file before passing it to the shape reader.

Last Updated: 21 Nov 2016 09:07 by ADMIN
InformationLayer.GetBestView(...)) method produces incorrect results when working on MapPinPoint items that are part of the information layer.
Deleting this item because there is a copy of it here =>

Also please have in mind tha this bug is not reproducible with VisualizationLayer.
Last Updated: 27 Dec 2016 13:24 by ADMIN
Map: DataTemplate is not applied correctly. On second click /zoom in/zoom out the items appear.
The issue is not reproducible with Visualization Layer.
Last Updated: 27 Dec 2016 12:49 by ADMIN
When the custom map provider supports levels range other than 1 to 20 then it could affect to tiles downloading performance.
Last Updated: 27 Dec 2016 11:57 by ADMIN
BirdsEye view doesn't work after trying to look at an area which does not contain birds eye imagery data

Steps for reproducing:
1. Zoom into area with no birds eye view imagery data. Enable Birds eye view. Verify that no tiles are loaded.
2. Change back to Road view, navigate to an area where you know there is bird's eye view imagery.
3. Zoom into the area. Enable Bird's Eye view a second time: The tiles are not loaded.
Last Updated: 07 Feb 2020 16:16 by ADMIN
Visualization layers are removed from the RadMap  in a moment when MapShapeData objects are being processes (their geometries are processed).
This leads to exception in MapShapeData.cs ' SetLogicalWidth method.

Available in R2 2017 SP
Last Updated: 27 Dec 2016 12:53 by ADMIN
Polyline object in VisualizationLayer is not updated if you clear its Points collection.

The expected behavior is that the Polyline is not visible on the Map.

As a workaround,  you can remove the PolylineData directly from the Layer.

Last Updated: 03 May 2019 16:50 by ADMIN
When you have two providers - BingMapProvider and custom TiledProvider - and the map source of the second provider (the custom one) is changed, the updated provider is drawn under the provider defined before it in the Providers collection (the BingMapProvider).

To work this around you can call the BingMapProvider's SetMapSource() method after the source of the custom provider is changed.

// set the custom provider source
Last Updated: 30 Apr 2020 10:31 by ADMIN

The behavior can be observed with the following setups:

new WmsTiledProvider("http://4maps.geo-solutions.it/geoserver/osm/wms")

                Layers = "osm",
                Version = "1.3.0",
                Projection = "CRS:84" // WGS84, 1.3.0 Standard compatible


new WmsTiledProvider("http://4maps.geo-solutions.it/geoserver/osm/wms")

                Layers = "osm",
                Version = "1.1.0",
                Projection = "EPSG:4326" // WGS84, 1.1.0 Standard compatible
Last Updated: 23 Apr 2020 08:25 by ADMIN
Release LIB 2020.1.427 (04/27/2020)
Currently the BingRestTruckRouteRequest provides option for only single HazardousMaterial and single HazardousPermit. API should provide options for multiple such options.
Last Updated: 25 Nov 2019 12:29 by ADMIN
Release LIB 2019.3.1125
Note, that the Dispose method of the RadMap needs to be called in the Closed event of the Window in order for the exception to occur. 
Last Updated: 27 Feb 2020 12:56 by ADMIN
Release LIB 2020.1.224 (2/24/2020)
When the Layer of the OpenStreetMapProvider is changed from the MapCommandBar, the Layer property is not updated. 
Last Updated: 05 Feb 2020 07:46 by ADMIN
Release LIB 2020.1.210 (2/10/2020)

If you update the Location of a map shape data object (for example, EllipseData, PolygonData, ect.) at run-time, while the clustering feature is enabled, the shape disappears.

To work this around, reset the clustering via the IsClusteringEnabled property when the Location changes.

this.ellipseShapeData = new Location(newLatitude, newLongitude);
this.visualizationLayer.ClusteringEnabled = false;
this.visualizationLayer.ClusteringEnabled = true;


Last Updated: 04 May 2018 13:49 by ADMIN
Last Updated: 14 Sep 2018 13:59 by ADMIN
Created by: Dilyan Traykov
Comments: 0
Category: Map
Type: Bug Report

Last Updated: 11 Feb 2019 13:49 by ADMIN
Created by: Jason D
Comments: 3
Category: Map
Type: Bug Report

In reference to: https://www.telerik.com/forums/binding-question

This sample project is not exactly the same as my actual project, but has the same issue.

I have multiple maps visible. I have a PolygonData that I want to be visible on both maps. It shows up fine. However, the polygon on the first map will not scale when zooming with the FIRST map. If I zoom with the SECOND map, both polygons will correctly scale.

If I replace PolygonData with my own object (PolygonVM), both polygons always correctly scale.

Last Updated: 03 Jun 2019 15:23 by ADMIN
The issue is reproduced mainly, when animated items are brought out of the viewport and then reenter the viewport.  
Last Updated: 14 Oct 2019 08:26 by ADMIN
Created by: Jason D
Comments: 2
Category: Map
Type: Bug Report

I have only seen this once. It's possible this is because I am using multiple maps at the same time. I think it crashed the application, but I do not recall.


  Message=The process cannot access the file 'C:\Users\jasond\AppData\Local\TelerikMapCache\Telerik.Windows.Controls.Map.BingRestRoadOnDemandSource.23x7935x11621' because it is being used by another process.
   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share)
   at Telerik.Windows.Controls.Map.FileSystemCache.OpenCacheStream(String fileName)
   at Telerik.Windows.Controls.Map.FileCacheBase.LoadAsync(String fileName, Action`1 callback)
   at Telerik.Windows.Controls.Map.TiledMapSource.GetCachedTileAsync(Int32 tileLevel, Int32 tilePositionX, Int32 tilePositionY, Action`1 callback)
   at Telerik.Windows.Controls.Map.MultiScaleTileSource.DownloadTile(TileId tileId)
   at Telerik.Windows.Controls.Map.TilesDownloadManager.RequestTile(Int32 requestLevel, Int32 tileX, Int32 tileY, Nullable`1 absTileX)
   at Telerik.Windows.Controls.Map.TilesDownloadManager.RequestTop3Levels(Int32 endLevel3)
   at Telerik.Windows.Controls.Map.TilesDownloadManager.Process()
   at Telerik.Windows.Controls.Map.TilesDownloadManager.DownloaderThread()
   at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ThreadHelper.ThreadStart()

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