private void ClearBufferPolygons()
{
// Get the collection of graphics in the graphics overlay (points and buffer polygons).
GraphicCollection bufferGraphics = MyMapView.GraphicsOverlays["buffers"].Graphics;
// Loop (backwards) through all graphics.
for (int i = bufferGraphics.Count - 1; i >= 0; i--)
{
// If the graphic is a polygon, remove it from the overlay.
Graphic thisGraphic = bufferGraphics[i];
if (thisGraphic.Geometry.GeometryType == GeometryType.Polygon)
{
bufferGraphics.RemoveAt(i);
}
}
}