Tile layer is used to display the map tiles on a map using different tile sources. This is the first layer to be added to the map before adding any data to it. You can add the tile layer on a map using C1Map.TileLayer property. Once you add the tile layer on a map, you need to set the tile source for it using TileSource property of TileLayer class.

Adding built-in Tile Source

C1Map uses three built-in tile sources, VirtualEarthAerialSource, VirtualEarthRoadSource, and VirtualEarthHybridSource. You can use any of these to define the tile source for the tile layer.

Following code illustrates the use of C1Map.TileLayer and TileSource property:

C1Map1.TileLayer.TileSource = New VirtualEarthAerialSource()

c1Map1.TileLayer.TileSource = new VirtualEarthAerialSource();

Adding custom Tile Source

In addition to the three built-in sources, C1Map supports custom tile source that can be added to the tile layer of a map. For adding a custom tile source, you need to create your own class that implements C1.FlexMap.ITileSource interface. In the following code, we have created a class named OpenStreetTileSource that is used to add custom tile source to your map and uses the OpenStreetMap service:

' Provide custom tile source which implements C1.FlexMap.ITileSource interface
C1Map1.TileLayer.TileSource = New Map_Layers.OpenStreetTileSource()

// Provide custom tile source which implements C1.FlexMap.ITileSource interface
c1Map1.TileLayer.TileSource = new OpenStreetTileSource();