private void RemoveExistingFeatures()
{
var features = _cache.Features.ToList();
_cache.Clear(); // clear before dispose to prevent possible null disposed exception on render
// Disposing previous and storing current in the previous field to prevent dispose during rendering.
if (_previousFeatures != null)
{
DisposeRenderedGeometries(_previousFeatures);
}
_previousFeatures = features;
}
public override void ClearCache()
{
cache.Clear();
}