public void ProcessRequest(HttpContext context)
{
// location
// f
// distance (in meters)
// outSR
PointN point;
if (!TryParse(context.Request.Params["location"], out point))
{
throw new ArgumentException("The location parameter was not provided.");
}
// If an input spatial reference has been specified, add that information to the point.
string inSRStr = context.Request.Params["inSR"];
int inSRWKT;
if (!string.IsNullOrEmpty(inSRStr) && int.TryParse(inSRStr, out inSRWKT))
{
point.SpatialReference = inSRWKT.ToSpatialReference();
}
string outSRStr = context.Request.Params["outSR"];
int outSRWKT;
SpatialReference outSR = null;
if (!string.IsNullOrEmpty(outSRStr) && int.TryParse(outSRStr, out outSRWKT))
{
outSR = outSRWKT.ToSpatialReference();
}
// Get the distance.
string distanceStr = context.Request.Params["distance"];
double distance = 0;
string units = _defaultUnits;
if (!string.IsNullOrEmpty(distanceStr))
{
GetDistance(distanceStr, out distance, out units);
}
PropertySet result;
using (var proxy = new GeocodeServerProxy { Url = ConfigurationManager.AppSettings["GeocodeService"] })
{
// Get the default properties for this geocode server.
PropertySet locatorProperties = proxy.GetLocatorProperties();
// Convert the property set into a dictionary for easier editing/adding of properties.
var lPropDict = locatorProperties.PropertyArray.ToDictionary(k => k.Key, v => v.Value);
lPropDict["OutputSpatialReference"] = outSR;
lPropDict["ReverseDistance"] = distance;
lPropDict["ReverseDistanceUnits"] = units;
// Convert the dictionary back into a property array.
locatorProperties.PropertyArray = (from kvp in lPropDict
select new PropertySetProperty
{
Key = kvp.Key,
Value = kvp.Value
}).ToArray();
result = proxy.ReverseGeocode(point, true, locatorProperties);
}
// Convert the property array into a dictionary.
var output = new Dictionary<string, object>();
if (result.PropertyArray != null && result.PropertyArray.Length > 0)
{
var resultProperties = result.PropertyArray.ToDictionary(k => k.Key, v => v.Value);
output["address"] = (from prop in result.PropertyArray
where string.Compare(prop.Key, "Shape", true) != 0
select prop).ToDictionary(k => k.Key, v => v.Value);
var location = resultProperties["Shape"] as PointN;
if (location != null)
{
output["location"] = ToJsonPoint(location);
}
}
var serializer = new JavaScriptSerializer();
string json = serializer.Serialize(output);
context.Response.ContentType = "application/json";
context.Response.Write(json);
}
public static GeocodeResult Geocode(string serviceUri, string address)
{
GeocodeServerProxy proxy = new GeocodeServerProxy(serviceUri);
PropertySet geocodePropSet = new PropertySet();
PropertySetProperty geocodeProp = new PropertySetProperty();
geocodeProp.Key = "KeyField";
geocodeProp.Value = address;
geocodePropSet.PropertyArray = new PropertySetProperty[] { geocodeProp };
PropertySet results = proxy.GeocodeAddress(geocodePropSet, null);
return new GeocodeResult(results);
}
