location type(solr) in C#

i have this field en my solr schema.xml

<field name="geocode"
       type="location"
       indexed="true" 
       stored="true"
       multiValued="false" />

i wonder, what type of object i need in my c# class?

im trying with that, but solr throws an error.

 [SolrField("geocode")]
 public System.Drawing.PointF GeoCode { get; set; }


SEVERE: java.lang.NumberFormatException: For input string: "{X=0"
    at sun.misc.FloatingDecimal.readJavaFormatString(Unknown Source)
    at java.lang.Double.parseDouble(Unknown Source)
    at org.apache.lucene.spatial.DistanceUtils.parsePointDouble(DistanceUtil
    s.java:410)

Can anyone help?

Solution

As of October 2012, SolrNet comes with a built in Location class for supporting GeoSpatial searching. I would recommend getting the latest version from source - SolrNet on GitHub or from the nightly builds and using this class.

For queries, SolrNet added SolrQueryByDistance for creating geofilt or bbox queries. See SolrNet - Querying for more detials.