void OnControlSelectionChanged(object?sender, WSelectionChangedEventArgs e)
{
if (VirtualView != null && NativeView != null)
{
VirtualView.SelectedIndex = NativeView.SelectedIndex;
}
}
private void RendererTypes_SelectionChanged(object sender, Microsoft.UI.Xaml.Controls.SelectionChangedEventArgs e)
{
// Get the user choice for the raster stretch render
string myRendererTypeChoice = e.AddedItems[0].ToString();
switch (myRendererTypeChoice)
{
case "Min Max":
// This section displays/resets the user choice options for MinMaxStretchParameters
// Make sure all the GUI items are visible
FirstParameterLabel.Visibility = Visibility.Visible;
SecondParameterLabel.Visibility = Visibility.Visible;
FirstParameterInput.Visibility = Visibility.Visible;
SecondParameterInput.Visibility = Visibility.Visible;
// Define what values/options the user sees
FirstParameterLabel.Text = "Minimum value (0 - 255):";
SecondParameterLabel.Text = "Maximum value (0 - 255):";
FirstParameterInput.Text = "10";
SecondParameterInput.Text = "150";
break;
case "Percent Clip":
// This section displays/resets the user choice options for PercentClipStretchParameters
// Make sure all the GUI items are visible
FirstParameterLabel.Visibility = Visibility.Visible;
SecondParameterLabel.Visibility = Visibility.Visible;
FirstParameterInput.Visibility = Visibility.Visible;
SecondParameterInput.Visibility = Visibility.Visible;
// Define what values/options the user sees
FirstParameterLabel.Text = "Minimum (0 - 100):";
SecondParameterLabel.Text = "Maximum (0 - 100)";
FirstParameterInput.Text = "0";
SecondParameterInput.Text = "50";
break;
case "Standard Deviation":
// This section displays/resets the user choice options for StandardDeviationStretchParameters
// Make sure that only the necessary GUI items are visible
FirstParameterLabel.Visibility = Visibility.Visible;
SecondParameterLabel.Visibility = Visibility.Collapsed;
FirstParameterInput.Visibility = Visibility.Visible;
SecondParameterInput.Visibility = Visibility.Collapsed;
// Define what values/options the user sees
FirstParameterLabel.Text = "Factor (.25 to 4):";
FirstParameterInput.Text = "0.5";
break;
}
}
private void AreasList_SelectionChanged(object sender, Microsoft.UI.Xaml.Controls.SelectionChangedEventArgs e)
{
// Update the download button to reflect if the map area has already been downloaded.
if (Directory.Exists(Path.Combine(_offlineDataFolder, (AreasList.SelectedItem as PreplannedMapArea).PortalItem.Title)))
{
DownloadButton.Content = "View downloaded area";
}
else
{
DownloadButton.Content = "Download preplanned area";
}
}
// Handle the spatial operation selection by performing the operation and showing the result polygon.
private void SpatialOperationComboBox_SelectionChanged(object sender, Microsoft.UI.Xaml.Controls.SelectionChangedEventArgs e)
{
// If an operation hasn't been selected, return.
if (SpatialOperationComboBox.SelectedItem == null)
{
return;
}
// Remove any currently displayed result.
_polygonsOverlay.Graphics.Remove(_resultGraphic);
// Polygon geometry from the input graphics.
Geometry polygonOne = _graphicOne.Geometry;
Geometry polygonTwo = _graphicTwo.Geometry;
// Result polygon for spatial operations.
Geometry resultPolygon = null;
// Run the selected spatial operation on the polygon graphics and get the result geometry.
string operation = (string)SpatialOperationComboBox.SelectedItem;
switch (operation)
{
case "Union":
resultPolygon = GeometryEngine.Union(polygonOne, polygonTwo);
break;
case "Difference":
resultPolygon = GeometryEngine.Difference(polygonOne, polygonTwo);
break;
case "Symmetric difference":
resultPolygon = GeometryEngine.SymmetricDifference(polygonOne, polygonTwo);
break;
case "Intersection":
resultPolygon = GeometryEngine.Intersection(polygonOne, polygonTwo);
break;
}
// Create a black outline symbol to use for the result polygon.
SimpleLineSymbol outlineSymbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Solid, System.Drawing.Color.Black, 1);
// Create a solid red fill symbol for the result polygon graphic.
SimpleFillSymbol resultSymbol = new SimpleFillSymbol(SimpleFillSymbolStyle.Solid, System.Drawing.Color.Red, outlineSymbol);
// Create the result polygon graphic and add it to the graphics overlay.
_resultGraphic = new Graphic(resultPolygon, resultSymbol);
_polygonsOverlay.Graphics.Add(_resultGraphic);
}
/// <summary>
/// Takes action once a new layer selection is made.
/// </summary>
private void ListSelectionChanged(object sender, Microsoft.UI.Xaml.Controls.SelectionChangedEventArgs e)
{
// Deselect removed layers.
foreach (LayerDisplayVM item in e.RemovedItems)
{
item.Select(false);
}
// Select added layers.
foreach (LayerDisplayVM item in e.AddedItems)
{
item.Select();
}
// Update the map.
UpdateMapDisplay(_viewModelList);
}
private void StretchTypeComboBox_SelectionChanged(object sender, Microsoft.UI.Xaml.Controls.SelectionChangedEventArgs e)
{
// Hide all UI controls for the input parameters.
MinMaxParametersGrid.Visibility = Microsoft.UI.Xaml.Visibility.Collapsed;
PercentClipParametersGrid.Visibility = Microsoft.UI.Xaml.Visibility.Collapsed;
StdDeviationParametersGrid.Visibility = Microsoft.UI.Xaml.Visibility.Collapsed;
// See which type was selected and show the corresponding input controls.
switch (StretchTypeComboBox.SelectedValue.ToString())
{
case "Min Max":
MinMaxParametersGrid.Visibility = Microsoft.UI.Xaml.Visibility.Visible;
break;
case "Percent Clip":
PercentClipParametersGrid.Visibility = Microsoft.UI.Xaml.Visibility.Visible;
break;
case "Standard Deviation":
StdDeviationParametersGrid.Visibility = Microsoft.UI.Xaml.Visibility.Visible;
break;
}
}
private void ListView_SelectionChanged(object sender, Microsoft.UI.Xaml.Controls.SelectionChangedEventArgs e)
{
VirtualView?.OnSelected(0, NativeView.SelectedIndex);
}
// Handle a new selected comment record in the table view.
private async void CommentsListBox_SelectionChanged(object sender, Microsoft.UI.Xaml.Controls.SelectionChangedEventArgs e)
{
// Clear selected features from the graphics overlay.
_selectedFeaturesOverlay.Graphics.Clear();
// Get the selected comment feature. If there is no selection, return.
ArcGISFeature selectedComment = e.AddedItems[0] as ArcGISFeature;
if (selectedComment == null)
{
return;
}
// Get the map image layer that contains the service request sublayer and the service request comments table.
ArcGISMapImageLayer serviceRequestsMapImageLayer = (ArcGISMapImageLayer)MyMapView.Map.OperationalLayers[0];
// Get the (non-spatial) table that contains the service request comments.
ServiceFeatureTable commentsTable = serviceRequestsMapImageLayer.Tables[0];
// Get the relationship that defines related service request features for features in the comments table (this is the first and only relationship).
RelationshipInfo commentsRelationshipInfo = commentsTable.LayerInfo.RelationshipInfos.FirstOrDefault();
// Create query parameters to get the related service request for features in the comments table.
RelatedQueryParameters relatedQueryParams = new RelatedQueryParameters(commentsRelationshipInfo)
{
ReturnGeometry = true
};
try
{
// Query the comments table to get the related service request feature for the selected comment.
IReadOnlyList <RelatedFeatureQueryResult> relatedRequestsResult = await commentsTable.QueryRelatedFeaturesAsync(selectedComment, relatedQueryParams);
// Get the first result.
RelatedFeatureQueryResult result = relatedRequestsResult.FirstOrDefault();
// Get the first feature from the result. If it's null, warn the user and return.
ArcGISFeature serviceRequestFeature = result.FirstOrDefault() as ArcGISFeature;
if (serviceRequestFeature == null)
{
var message = new MessageDialog2("Related feature not found.", "No Feature");
await message.ShowAsync();
return;
}
// Load the related service request feature (so its geometry is available).
await serviceRequestFeature.LoadAsync();
// Get the service request geometry (point).
MapPoint serviceRequestPoint = serviceRequestFeature.Geometry as MapPoint;
// Create a cyan marker symbol to display the related feature.
Symbol selectedRequestSymbol = new SimpleMarkerSymbol(SimpleMarkerSymbolStyle.Circle, Color.Cyan, 14);
// Create a graphic using the service request point and marker symbol.
Graphic requestGraphic = new Graphic(serviceRequestPoint, selectedRequestSymbol);
// Add the graphic to the graphics overlay and zoom the map view to its extent.
_selectedFeaturesOverlay.Graphics.Add(requestGraphic);
await MyMapView.SetViewpointCenterAsync(serviceRequestPoint, 150000);
}
catch (Exception ex)
{
await new MessageDialog2(ex.ToString(), "Error").ShowAsync();
}
}
