/* ****** Identify using Query Service ****** */
private void QueryIdentifyTask_ExecuteCompleted(object sender, QueryEventArgs args)
{
QueryItem queryItem = args.UserState as QueryItem;
if (queryItem.Index == 0)
{
IdentifyComboBox.Items.Clear();
_layersIdentified.Clear();
IdentifyDetailsDataGrid.ItemsSource = null;
}
// display search results for this layers query.
if (args.FeatureSet.Features.Count > 0)
{
foreach (Graphic feature in args.FeatureSet.Features)
{
string title = queryItem.IdentifyLayerName;
feature.Attributes.Remove("Shape");
feature.Attributes.Remove("OBJECTID");
_dataItems.Add(new DataItem()
{
Title = title,
Data = feature.Attributes
});
IdentifyComboBox.Items.Add(title);
if (_activeIdentifyLayer == title)
{
queryItem.ActiveLayer = _layersIdentified.Count;
}
_layersIdentified.Add(title);
}
}
if (queryItem.Next()) // this increments the internal index
{
Query query = new ESRI.ArcGIS.Client.Tasks.Query();
query.SpatialRelationship = SpatialRelationship.esriSpatialRelIntersects;
query.Geometry = queryItem.BufferedPoint;
query.OutFields.AddRange(new string[] { "*" });
QueryTask queryTask = new QueryTask(queryItem.IdentifyLayerUrl);
queryTask.ExecuteCompleted += QueryIdentifyTask_ExecuteCompleted;
queryTask.Failed += QueryIdentifyTask_Failed;
queryTask.ExecuteAsync(query, queryItem);
}
else // We are done with all our queries, display the result.
{
IdentifyComboBox.SelectedIndex = queryItem.ActiveLayer;
Visibility = System.Windows.Visibility.Visible;
if ((_dataItems == null) || (_dataItems.Count == 0))
{
NoResult.Visibility = Visibility.Visible;
Results.Visibility = Visibility.Collapsed;
}
else
{
NoResult.Visibility = Visibility.Collapsed;
Results.Visibility = Visibility.Visible;
}
}
}
