VectorTileDataProviderBase Class

Namespace: DevExpress.XtraMap

Assembly: DevExpress.XtraMap.v21.1.dll

Declaration

public abstract class VectorTileDataProviderBase :
    ImageTileDataProvider,
    IVectorTileStreamProvider

Public MustInherit Class VectorTileDataProviderBase
    Inherits ImageTileDataProvider
    Implements IVectorTileStreamProvider

Remarks

Follow the steps below to implement a provider that loads tiles from a custom source.

• Create a provider class that implements VectorTileDataProviderBase.
• Implement the VectorTileDataProviderBase.GetStream method so that it returns a tile as a sequence of bytes for specific coordinates in the tile grid at the specified zoom level.

• Assign the provider to the ImageLayer.DataProvider property.

  • C#
  • VB.NET

  using DevExpress.XtraMap;
  using System;
  using System.IO;
  using System.Windows.Forms;
  //...
  private void Form1_Load(object sender, EventArgs e) {
      ImageLayer layer = new ImageLayer();
      VectorTileProvider dataProvider = new VectorTileProvider();
      layer.DataProvider = dataProvider;
      mapControl1.Layers.Add(layer);
  }
  public class VectorTileProvider : VectorTileDataProviderBase {
      public override Stream GetStream(long x, long y, long level) {
          // Your implementation here.
      }
  }