Geo distance range filter in NEST?

Question

How can I apply a geo distance range filter using NEST? It seems to be something like

var results = client.Search<MyDataType>(s => s
.Filter(m => m.GeoDistance(c => c.Location, f => f.Distance(100, GeoUnit.mi)));

but how do I pass in long/lat of the target location?

(similar question has been asked for Java client)

Answer 1

Answering my own question. This works:

var results = client.Search<MyDataType>(s => s
.Filter(m => m.GeoDistance(
  c => c.Location, 
  f => f.Distance("100 mi").Location(40.7, -74.0)));

After some debugging, I suspect that f.Distance(100, GeoUnit.mi) didn't work due to a bug in NEST.