In Development
Last Updated: 11 Apr 2024 11:38 by ADMIN

When you inherit BingRestMapProvider and BingRestTileMapSource, following the custom map provider approach

the map does not display any tiles. This is due to internal property TopLayer not set correctly to the TileMapSource class.

Won't Fix
Last Updated: 18 Jan 2024 12:40 by Petar
Created by: Stenly
Comments: 3
Category: Map
Type: Bug Report
The RadMap control does not display the MBTiles file format.
Last Updated: 20 Oct 2023 14:01 by ADMIN

When the VisualizationLayer is populated with FrameworkElement objects (often through the ItemTemplate) and the MapLayer.Location value of a FrameworkElement is updated at runtime, the element itself is not moved to the new location. This happens only if the FrameworkElement is outside of the viewport during the location change action.

To work this around, on location change, remove the data element from the ItemsSource and add it again.

Won't Fix
Last Updated: 04 Jul 2023 09:36 by ADMIN

The ZIndex property change is not detected by the VisualizationLayer at runtime. 

Workaround: remove and then add back the item where the ZIndex is changed.

Last Updated: 07 Apr 2023 07:56 by ADMIN
Release LIB 2023.1.407 (7 Apr 2023)
<telerik:UriVectorTileMapProvider UriTemplate="{level}/{x}/{y}/omv?apiKey=______"   

Map with the following setup displayes zoom level 1-2 but  crashes with ArgumentException on zoom level 3.
Last Updated: 10 Mar 2023 05:38 by ADMIN
Release R1 2023 SP1
Adding big-sized FrameworkElements in VisualizationLayer and then zooming in might result in disappearing of the element although it should cover the whole or large part of the viewport.
Last Updated: 08 Mar 2023 08:16 by ADMIN
Release R1 2023 SP1

Good Afternoon,

we use the RadMap's SelectionRectangleChanged event to allow the user to (de)select map elements with the box. In the event handler we use the layer's GetItemsInRectangle function to see what is within the selected area but this is where we encounter a problem with LineData objects. Dragging a selection rectangle that does not touch an edge but is close enough to it (likely within the bounding box of the LineData) it incorrectly recognizes the line as within the rectangle. See the attached screenshot for an example of a selection rectangle that should contain no elements within but actually reports the long line to its right as an element it contains. This can also be reproduced with the attached project:

  • Ctrl + Mouse Left to drag a selection rectangle
  • Mouse Left to pan, mouse wheel zo zoom. Shift + Mouse Left for zoom rectangle
  1. Draw a selection rectangle on the very left or right outside the elements: Debug Output reports "Selected Edges: 0"
  2. Draw a selection rectangle close to an edge but not touching it: Debug Output reports "Selected Edges: 1"
  3. Draw selection rectangle that contains (parts of) an edge: Debug Output reports "Selected Edges: 1"

Dominik Schacht


Last Updated: 19 Jan 2023 14:50 by ADMIN
With some projections or rectangles with really small sizes close to 0, LocationRect's ZoomLevel returns incorrect value - int.MinValue. The returned value should always be positive integer.
Last Updated: 16 Sep 2022 08:58 by ADMIN
Release LIB 2022.3.919 (19 Sep 2022)
Zoom step is 0.5 (or 0.2, 0.3 etc fractional).
Zooming in and out LineData objects in Visualization layer can result in some objects disappearing from the viewport or moving to wrong positions.
Last Updated: 17 Jun 2022 13:58 by ADMIN
Release R2 2022 SP1
The exception occurs in the SetLogicalWidth method of the MapShapeData class. 
Last Updated: 23 May 2022 05:14 by ADMIN
Release LIB 2022.2.523 (23 May 2022)
In some scenarios with fractional zoom, SetView method zooms higher than expected and the requested rect area is not entirely visible in the viewport.
Last Updated: 04 Mar 2022 15:26 by ADMIN
Release LIB 2022.1.307 (7 Mar 2022)
Created by: Dominik
Comments: 1
Category: Map
Type: Bug Report


after setting the `ZoomStep` in our project to something smaller than 1 (a feature we are very pleased to receive in the latest update) we encountered a problem when zooming in and out of our map view. I have attached screenshots and an example project to reproduce the issue. It occurs wether the renderer is set to SoftwareOnly or default.

Steps to reproduce:

  1. Start the example project (MapZoomInitial.png)
  2. Scroll the mouse wheel one click in to zoom in one step
  3. Scroll the mouse wheel one click out to zoom out again
  4. Artifacts appear (MapViewAfterZoomInAndOut.png)


Last Updated: 17 Feb 2022 10:19 by ADMIN
Release R1 2022 SP1
When RadMap is in DataTemplate / ControlTemplate of other control and its ZoomLevel (or the new Zoom) property is bound to ViewModel's property, the binding is broken by internal setting of the ZoomLevel/Zoom property and the expected ViewModel property is not set successfully.
Last Updated: 07 Sep 2021 10:14 by ADMIN
Release R3 2021

Using wraparound True and Virtualization in VisualizationLayer.
When panning from left to right and placing rectangles over the requested regions, a gap could be seen on the left side. This is because the regions that get into viewport fire data request event when their top left point is inside the viewport. To cover the viewport, the topright point of the regions should be used instead.

Last Updated: 21 Jan 2021 13:38 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: 14 Jan 2021 13:58 by ADMIN
When NavigationVisibility is set to Collapsed, a circle is left in our latest themes.
Last Updated: 30 Nov 2020 16:04 by ADMIN
Shape files are not displayed correctly by the RadMap readers in .NET CORE 3.1 and .NET 5.
Last Updated: 06 Nov 2020 11:20 by ADMIN
Release LIB 2020.3.1109 (11/09/2020)
The control does not display the image in design time when using a UriImageProvide.
Last Updated: 26 May 2020 08:34 by ADMIN
Release LIB 2020.2.525 (5/26/2020)
External MapScale object does not update until you Zoom/Move the map
Last Updated: 30 Apr 2020 10:31 by ADMIN

The behavior can be observed with the following setups:

new WmsTiledProvider("")

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


new WmsTiledProvider("")

                Layers = "osm",
                Version = "1.1.0",
                Projection = "EPSG:4326" // WGS84, 1.1.0 Standard compatible
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