private void QueryTask_ExecuteCompleted(object sender, ESRI.ArcGIS.Client.Tasks.QueryEventArgs args)
{
FeatureSet featureSet = args.FeatureSet;
// If initial query to populate states combo box
if ((args.UserState as string) == "initial")
{
// Just show on initial load
QueryComboBox.Items.Add("Select...");
foreach (Graphic graphic in args.FeatureSet.Features)
{
QueryComboBox.Items.Add(graphic.Attributes["STATE_NAME"].ToString());
}
QueryComboBox.SelectedIndex = 0;
return;
}
// Remove the first entry if "Select..."
if (QueryComboBox.Items[0].ToString().Contains("Select..."))
{
QueryComboBox.Items.RemoveAt(0);
}
// If an item has been selected
GraphicsLayer graphicsLayer = MyMap.Layers["MyGraphicsLayer"] as GraphicsLayer;
graphicsLayer.ClearGraphics();
if (featureSet != null && featureSet.Features.Count > 0)
{
// Show selected feature attributes in DataGrid
Graphic selectedFeature = featureSet.Features[0];
QueryDetailsDataGrid.ItemsSource = selectedFeature.Attributes;
// Highlight selected feature
selectedFeature.Symbol = LayoutRoot.Resources["DefaultFillSymbol"] as ESRI.ArcGIS.Client.Symbols.Symbol;
graphicsLayer.Graphics.Add(selectedFeature);
// Zoom to selected feature (define expand percentage)
ESRI.ArcGIS.Client.Geometry.Envelope selectedFeatureExtent = selectedFeature.Geometry.Extent;
double expandPercentage = 30;
double widthExpand = selectedFeatureExtent.Width * (expandPercentage / 100);
double heightExpand = selectedFeatureExtent.Height * (expandPercentage / 100);
ESRI.ArcGIS.Client.Geometry.Envelope displayExtent = new ESRI.ArcGIS.Client.Geometry.Envelope(
selectedFeatureExtent.XMin - (widthExpand / 2),
selectedFeatureExtent.YMin - (heightExpand / 2),
selectedFeatureExtent.XMax + (widthExpand / 2),
selectedFeatureExtent.YMax + (heightExpand / 2));
MyMap.ZoomTo(displayExtent);
// If DataGrid not visible (initial load), show it
if (DataGridScrollViewer.Visibility == Visibility.Collapsed)
{
DataGridScrollViewer.Visibility = Visibility.Visible;
QueryGrid.Height = Double.NaN;
QueryGrid.UpdateLayout();
}
}
else
{
QueryDetailsDataGrid.ItemsSource = null;
DataGridScrollViewer.Visibility = Visibility.Collapsed;
QueryGrid.Height = Double.NaN;
QueryGrid.UpdateLayout();
}
}
private void QueryTask_ExecuteCompleted(object sender, ESRI.ArcGIS.Client.Tasks.QueryEventArgs args)
{
FeatureSet featureSet = args.FeatureSet;
// If initial query to populate states list box
if ((args.UserState as string) == "initial")
{
// Just show on initial load
QueryListBox.Items.Add("Select...");
foreach (Graphic graphic in args.FeatureSet.Features)
{
QueryListBox.Items.Add(graphic.Attributes["STATE_NAME"].ToString());
}
QueryListBox.SelectedIndex = 0;
return;
}
// Remove the first entry if "Select..."
if (QueryListBox.Items[0].ToString().Contains("Select..."))
{
QueryListBox.Items.RemoveAt(0);
}
// If an item has been selected
GraphicsLayer graphicsLayer = MyMap.Layers["MyGraphicsLayer"] as GraphicsLayer;
graphicsLayer.ClearGraphics();
if (featureSet != null && featureSet.Features.Count > 0)
{
// Show selected feature attributes in DataGrid
Graphic selectedFeature = featureSet.Features[0];
ResultsListBox.Items.Clear();
//QueryDetailsDataGrid.ItemsSource = selectedFeature.Attributes;
foreach (KeyValuePair <string, object> pair in selectedFeature.Attributes)
{
TextBlock tb1 = new TextBlock()
{
FontSize = 30,
FontWeight = FontWeights.Bold,
Text = string.Format("{0}: ", pair.Key)
};
TextBlock tb2 = new TextBlock()
{
FontSize = 30,
Text = string.Format(" {0}", pair.Value)
};
StackPanel sp = new StackPanel()
{
Orientation = System.Windows.Controls.Orientation.Vertical
};
sp.Children.Add(tb1);
sp.Children.Add(tb2);
ListBoxItem item = new ListBoxItem();
item.Content = sp;
ResultsListBox.Items.Add(item);
}
// Highlight selected feature
selectedFeature.Symbol = DefaultFillSymbol;
graphicsLayer.Graphics.Add(selectedFeature);
// Zoom to selected feature (define expand percentage)
ESRI.ArcGIS.Client.Geometry.Envelope selectedFeatureExtent = selectedFeature.Geometry.Extent;
double expandPercentage = 30;
double widthExpand = selectedFeatureExtent.Width * (expandPercentage / 100);
double heightExpand = selectedFeatureExtent.Height * (expandPercentage / 100);
ESRI.ArcGIS.Client.Geometry.Envelope displayExtent = new ESRI.ArcGIS.Client.Geometry.Envelope(
selectedFeatureExtent.XMin - (widthExpand / 2),
selectedFeatureExtent.YMin - (heightExpand / 2),
selectedFeatureExtent.XMax + (widthExpand / 2),
selectedFeatureExtent.YMax + (heightExpand / 2));
MyMap.ZoomTo(displayExtent);
// If DataGrid not visible (initial load), show it
if (ResultsListBox.Visibility == Visibility.Collapsed)
{
ResultsListBox.Visibility = Visibility.Visible;
QueryGrid.Height = Double.NaN;
QueryGrid.UpdateLayout();
}
}
else
{
//QueryDetailsDataGrid.ItemsSource = null;
ResultsListBox.Visibility = Visibility.Collapsed;
QueryGrid.Height = Double.NaN;
QueryGrid.UpdateLayout();
}
}