MapboxDataProvider Class

A data provider that obtains vector tiles from Mapbox Service.

Namespace: DevExpress.XtraMap

Assembly: DevExpress.XtraMap.v24.2.dll

Declaration

C#

public class MapboxDataProvider :
    UriBasedVectorTileDataProvider

VB.NET

Public Class MapboxDataProvider
    Inherits UriBasedVectorTileDataProvider

Remarks

Mapbox Service provides vector tilesets. The Map Control receives tiles as PBF files.

Important

Before you use the Mapbox Service, read the Invoices and billing and Terms of service pages.

Follow the steps below to connect to the Mapbox Tile Service and load the Mapbox Streets tileset (mapbox.mapbox-streets-v8):

1. Create an image layer and add it to the MapControl.Layers collection.
2. Create a MapboxDataProvider instance and assign it to the ImageLayer.DataProvider property.
3. Specify the MapboxDataProvider.AccessToken property. For more information on how to get the key, visit the access token page.

C#

private void Form1_Load(object sender, EventArgs e) {
    ImageLayer layer = new ImageLayer();
    MapboxDataProvider dataProvider = new MapboxDataProvider();

    dataProvider.AccessToken = "Your_access_token_here.";

    layer.DataProvider = dataProvider;
    mapControl1.Layers.Add(layer);
}

VB.NET

Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs)
    Dim layer As ImageLayer = New ImageLayer()
    Dim dataProvider As MapboxDataProvider = New MapboxDataProvider()

    dataProvider.AccessToken = "Your_access_token_here."

    layer.DataProvider = dataProvider
    mapControl1.Layers.Add(layer)
End Sub

Load a Specific Tileset

You can use the MapboxDataProvider.Tileset property to select a tileset:

C#

dataProvider.Tileset = MapboxTileset.Terrain;

VB.NET

dataProvider.Tileset = MapboxTileset.Terrain

Apply a Custom Style

If a default vector tile style does not meet your requirements, you can apply a custom style. Use the VectorTileDataProviderBase.StyleFileUri property to define a path to a style file. The MapControl uses System.Text.Json library to parse style files. Install the System.Text.Json package if your .NET Framework application does not reference this library. .NET projects do not require manual installation of the System.Text.Json package, as it is already included in the .NET environment. Set the DevExpress.Map.Native.VectorTileStyleParser.ProcessingLibrary property to NewtonsoftJson to use the Newtonsoft.Json library instead. See Vector Tile Providers: Vector Tile Styles for more information about styles.

The following code loads a style file from the project’s Data directory:

C#

dataProvider.StyleFileUri = new Uri(GetRelativePath("style.json"), UriKind.Absolute);

public static string GetRelativePath(string name) {
    name = "Data\\" + name;
    DirectoryInfo dir = new DirectoryInfo(Application.StartupPath);
    while (dir != null) {
        string filePath = Path.Combine(dir.FullName, name);
        if (File.Exists(filePath))
            return filePath;
        dir = Directory.GetParent(dir.FullName);
    }
    return string.Empty;
}

VB.NET

dataProvider.StyleFileUri = New Uri(GetRelativePath("style.json"), UriKind.Absolute)

Public Shared Function GetRelativePath(ByVal name As String) As String
    name = "Data\" & name
    Dim dir As DirectoryInfo = New DirectoryInfo(Application.StartupPath)
    While dir IsNot Nothing
        Dim filePath = Path.Combine(dir.FullName, name)
        If File.Exists(filePath) Then Return filePath
        dir = Directory.GetParent(dir.FullName)
    End While
    Return String.Empty
End Function

Inheritance

Object

MapDisposableObject

MapImageDataProviderBase

MapTileDataProviderBase

ImageTileDataProvider

VectorTileDataProviderBase

UriBasedVectorTileDataProvider

MapboxDataProvider