private void MyMap_MapGesture(object sender, Map.MapGestureEventArgs e)
{
if (e.Gesture == GestureType.Tap)
{
MyInfoWindow.IsOpen = false;
double mapScale = MyMap.Scale;
ArcGISDynamicMapServiceLayer alayer = null;
DataTemplate dt = null;
int layid = 0;
foreach (Layer layer in MyMap.Layers)
{
if (layer.GetValue(Document.PopupTemplatesProperty) != null)
{
alayer = layer as ArcGISDynamicMapServiceLayer;
IDictionary<int, DataTemplate> idict = layer.GetValue(Document.PopupTemplatesProperty) as IDictionary<int, DataTemplate>;
foreach (LayerInfo linfo in alayer.Layers)
{
if (((mapScale > linfo.MaxScale // in scale range
&& mapScale < linfo.MinScale) ||
(linfo.MaxScale == 0.0 // no scale dependency
&& linfo.MinScale == 0.0) ||
(mapScale > linfo.MaxScale // minscale = 0.0 = infinity
&& linfo.MinScale == 0.0)) &&
idict.ContainsKey(linfo.ID)) // id present in dictionary
{
layid = linfo.ID;
dt = idict[linfo.ID];
break;
}
}
}
}
if (dt != null)
{
QueryTask qt = new QueryTask(string.Format("{0}/{1}", alayer.Url, layid));
qt.ExecuteCompleted += (s, qe) =>
{
if (qe.FeatureSet.Features.Count > 0)
{
Graphic g = qe.FeatureSet.Features[0];
MyInfoWindow.Anchor = e.MapPoint;
MyInfoWindow.ContentTemplate = dt;
MyInfoWindow.Content = g.Attributes;
MyInfoWindow.IsOpen = true;
}
};
ESRI.ArcGIS.Client.Tasks.Query query = new ESRI.ArcGIS.Client.Tasks.Query();
double contractRatio = MyMap.Extent.Width / 20;
Envelope inputEnvelope = new Envelope(e.MapPoint.X - contractRatio,
e.MapPoint.Y - contractRatio,
e.MapPoint.X + contractRatio,
e.MapPoint.Y + contractRatio);
inputEnvelope.SpatialReference = MyMap.SpatialReference;
query.Geometry = inputEnvelope;
query.OutSpatialReference = MyMap.SpatialReference;
query.OutFields.Add("*");
qt.ExecuteAsync(query);
}
}
}