private void OnDrawComplete(DrawEventArgs args)
{
if (DrawCompleted != null)
{
DrawCompleted(this, args);
}
}
public override void Tap(GestureEventArgs e)
{
Point2D point = _map.ScreenToMap(e.GetPosition(_map));
DrawEventArgs args = new DrawEventArgs
{
Geometry =new GeoPoint(point.X,point.Y)
};
OnDrawComplete(args);
base.Tap(e);
}
private async void DrawCompleted(object sender, DrawEventArgs e)
{
QueryByGeometryParameters para = new QueryByGeometryParameters
{
Geometry = e.Geometry,
ReturnContent=true,
SpatialQueryMode = SpatialQueryMode.INTERSECT,
QueryParameters = new QueryParameterSet
{
ResampleExpectCount=0,
QueryOption=QueryOption.ATTRIBUTEANDGEOMETRY,
QueryParams = new List<QueryParameter>()
{
new QueryParameter
{
Name = "Countries@World",
}
}
}
};
try
{
QueryByGeometryService service = new QueryByGeometryService(url);
var result = await service.ProcessAsync(para);
if(result==null)
{
MessageBox.Show("返回结果没空");
return;
}
if(_feature.Features.Count>0)
{
_feature.ClearFeatures();
}
foreach(Recordset recordset in result.Recordsets)
{
foreach(Feature f in recordset.Features)
{
_feature.AddFeature(f);
}
}
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
}
