public void ArcGISTiledMapServiceLayer_TileLoaded(object sender, ESRI.ArcGIS.Client.TiledLayer.TileLoadEventArgs e)
{
if (isNoDataTile(e.ImageStream, MyMap.SpatialReference.WKID))
{
ArcGISTiledMapServiceLayer layer = sender as ArcGISTiledMapServiceLayer;
// Create writeable bitmap of the same size as layer tile
WriteableBitmap bmp = new WriteableBitmap(layer.TileInfo.Width, layer.TileInfo.Height);
// Set image source to writeable bitmap. Writeable bitmap
e.ImageSource = bmp;
// Start the resampling process
ResampleNoDataTile(bmp, 1, e.Level, e.Row, e.Column, layer.TileInfo.Width, layer.TileInfo.Height, layer.Url);
}
}