Elements Property (ElementEventArgs)
Gets the list of elements that have been updated.
Subscribe to ElementSelectionChangedEvent
ArcGIS.Desktop.Layouts.Events.ElementEvent.Subscribe((args) => {
//check if the container is a graphics layer - could be a Layout (or even map view)
if (args.Container is ArcGIS.Desktop.Mapping.GraphicsLayer graphicsLayer)
{
//get the total selection count for the container
var count = args.Elements.Count();
//Check count - could have been an unselect or clearselect
if (count > 0)
{
//this is a selection or add to selection
var elems = graphicsLayer.GetSelectedElements();
//TODO process the selection...
}
else
{
//This is an unselect or clear selection
//TODO process the unselect or clear select
}
}
});
ElementEvent_ElementAdded
//Report the event args when an element is added to the layout.
//At 2.x - ArcGIS.Desktop.Layouts.Events.ElementAddedEvent.Subscribe((args) =>
//{
// var elements = args.Elements;
// string elemNames = "null";
// if (elements != null && elements.Count() > 0)
// {
// elemNames = string.Join(",", elements.Select(e => e.Name).ToList());
// }
// System.Windows.MessageBox.Show("ElementAddedEvent:" +
// Environment.NewLine +
// " arg Elements: " + elemNames.ToString() +
// Environment.NewLine +
// " arg Layout: " + args.Layout.Name);
//});
ArcGIS.Desktop.Layouts.Events.ElementEvent.Subscribe((args) =>
{
string elemNames = "null";
if (args.Elements?.Count() > 0)
{
elemNames = string.Join(",", args.Elements.Select(e => e.Name).ToList());
}
if (args.Hint == ElementEventHint.ElementAdded)
{
System.Diagnostics.Debug.WriteLine($"ElementEventHint.ElementAdded: {elemNames}");
}
});
ElementEvent_ElementRemoved
//Report the event args when an element is removed from the layout.
//At 2.x - ArcGIS.Desktop.Layouts.Events.ElementRemovedEvent.Subscribe((args) =>
//{
// var elements = args.Elements;
// string elemNames = "null";
// if (elements != null && elements.Count() > 0)
// {
// elemNames = string.Join(",", elements.Select(e => e.Name).ToList());
// }
// System.Windows.MessageBox.Show("ElementRemovedEvent:" +
// Environment.NewLine +
// " arg Elements: " + elemNames.ToString() +
// Environment.NewLine +
// " arg Layout: " + args.Layout.Name);
//});
ArcGIS.Desktop.Layouts.Events.ElementEvent.Subscribe((args) =>
{
string elemNames = "null";
if (args.Elements?.Count() > 0)
{
elemNames = string.Join(",", args.Elements.Select(e => e.Name).ToList());
}
if (args.Hint == ElementEventHint.ElementRemoved)
{
System.Diagnostics.Debug.WriteLine($"ElementEventHint.ElementRemoved: {elemNames}");
}
});
ElementEvent_PlacementChanged
//Report the event args when an element's placement properties are changed.
//At 2.x - ArcGIS.Desktop.Layouts.Events.ElementsPlacementChangedEvent.Subscribe((args) =>
//{
// var elements = args.Elements;
// string elemNames = "null";
// if (elements != null && elements.Count() > 0)
// {
// elemNames = string.Join(",", elements.Select(e => e.Name).ToList());
// }
// System.Windows.MessageBox.Show("ElementsPlacementChangedEvent:" +
// Environment.NewLine +
// " arg Elements: " + elemNames.ToString() +
// Environment.NewLine +
// " arg Layout: " + args.Layout.Name);
//});
ArcGIS.Desktop.Layouts.Events.ElementEvent.Subscribe((args) =>
{
string elemNames = "null";
if (args.Elements?.Count() > 0)
{
elemNames = string.Join(",", args.Elements.Select(e => e.Name).ToList());
}
if (args.Hint == ElementEventHint.PlacementChanged)
{
System.Diagnostics.Debug.WriteLine($"ElementEventHint.PlacementChanged: {elemNames}");
}
});
ElementEvent_StyleChanged
//Report the event args when an element's style is changed.
//At 2.x - ArcGIS.Desktop.Layouts.Events.ElementStyleChangedEvent.Subscribe((args) =>
//{
// var elements = args.Elements;
// string elemNames = "null";
// if (elements != null && elements.Count() > 0)
// {
// elemNames = string.Join(",", elements.Select(e => e.Name).ToList());
// }
// System.Windows.MessageBox.Show("ElementStyleChangedEvent:" +
// Environment.NewLine +
// " arg Elements: " + elemNames.ToString() +
// Environment.NewLine +
// " arg Layout: " + args.Layout.Name);
//});
ArcGIS.Desktop.Layouts.Events.ElementEvent.Subscribe((args) =>
{
string elemNames = "null";
if (args.Elements?.Count() > 0)
{
elemNames = string.Join(",", args.Elements.Select(e => e.Name).ToList());
}
if (args.Hint == ElementEventHint.StyleChanged)
{
System.Diagnostics.Debug.WriteLine($"ElementEventHint.StyleChanged: {elemNames}");
}
});
Target Platforms: Windows 11, Windows 10
ArcGIS Pro version: 3 or higher.