ArcGIS Pro 3.3 API Reference Guide
ArcGIS.Desktop.Layouts.Events Namespace / LayoutViewEvent Class
Members Example

In This Topic
    LayoutViewEvent Class
    In This Topic
    Occurs when the LayoutView is initialized, activated or its extent is changed.
    Object Model
    LayoutViewEvent ClassSubscriptionToken ClassSubscriptionToken Class
    Syntax
    Remarks
    Reference LayoutViewEventArgs to get a list of arguments.
    Example
    LayoutViewEvent_Activated_Deactivated
    //Report the event args when a the layout view has changed.
    
    //At 2.x - ArcGIS.Desktop.Layouts.Events.ActiveLayoutViewChangedEvent.Subscribe((args) =>
    //{
    //  System.Windows.MessageBox.Show("ActiveLayoutViewChangedEvent:" +
    //    Environment.NewLine +
    //    "   arg Layoutview: " + args.LayoutView.Layout.Name +
    //    Environment.NewLine +
    //    "   arg Type: " + args.Type.ToString());
    //});
    
    ArcGIS.Desktop.Layouts.Events.LayoutViewEvent.Subscribe((args) =>
    {
      //this is the view being activated 
      var layout = args.LayoutView?.Layout?.Name ?? "null";
    
      if (args.Hint == LayoutViewEventHint.Activated)
      {
        System.Diagnostics.Debug.WriteLine($"LayoutViewEventHint.Activated: {layout}");
      }
      else if (args.Hint == LayoutViewEventHint.Deactivated)
      {
        System.Diagnostics.Debug.WriteLine($"LayoutViewEventHint.Deactivated: {layout}");
      }
    });
    LayoutViewEvent_LayoutClosed
    //Report the event args when a layout is closed.
    
    //At 2.x - ArcGIS.Desktop.Layouts.Events.LayoutClosedEvent.Subscribe((args) =>
    //{
    //  System.Windows.MessageBox.Show("LayoutClosedEvent:" +
    //  Environment.NewLine +
    //  "   arg LayoutPane: " + args.LayoutPane.Caption);
    //});
    
    ArcGIS.Desktop.Layouts.Events.LayoutViewEvent.Subscribe((args) =>
    {
      var lv = args.LayoutView;
      var layoutName = lv?.Layout?.Name ?? "null";
      if (args.Hint == LayoutViewEventHint.Closed)
      {
        System.Diagnostics.Debug.WriteLine($"LayoutViewEventHint.Closed: {layoutName}");
      }
    });
    
    LayoutViewEvent_LayoutClosing
    //Report the event args when a layout is closing.
    
    //At 2.x - ArcGIS.Desktop.Layouts.Events.LayoutClosingEvent.Subscribe((args) =>
    //{
    //  System.Windows.MessageBox.Show("LayoutClosingEvent:" +
    //  Environment.NewLine +
    //  "   arg Layout: " + args.Layout.Name +
    //  Environment.NewLine +
    //  "   arg LayoutPane: " + args.LayoutPane.Caption);
    //});
    
    ArcGIS.Desktop.Layouts.Events.LayoutViewEvent.Subscribe((args) =>
    {
      var lv = args.LayoutView;
      var layoutName = lv?.Layout?.Name ?? "null";
      if (args.Hint == LayoutViewEventHint.Closing)
      {
        System.Diagnostics.Debug.WriteLine($"LayoutViewEventHint.Closing: {layoutName}");
      }
    });
    LayoutViewEvent_PauseDrawingChanged
    //Report the event args when a layout's paused state is changed.
    
    //At 2.x - ArcGIS.Desktop.Layouts.Events.LayoutPauseDrawingChangedEvent.Subscribe((args) =>
    //{
    //  System.Windows.MessageBox.Show("LayoutPauseDrawingChangedEvent:" +
    //    Environment.NewLine +
    //    "   arg Layoutview: " + args.LayoutView.Layout.Name +
    //    Environment.NewLine +
    //    "   arg Type: " + args.Paused.ToString());
    //});
    
    //At 3.x use LayoutViewEvent
    ArcGIS.Desktop.Layouts.Events.LayoutViewEvent.Subscribe((args) =>
    {
      var lv = args.LayoutView;
      var layout = args.LayoutView?.Layout;
    
      switch (args.Hint)
      {
        case LayoutViewEventHint.PauseDrawingChanged:
          System.Diagnostics.Debug.WriteLine($"LayoutViewEvent ElementEventHint: {args.Hint.ToString()}");
          break;
      }
    });
    
    LayoutViewEvent
    //Report the event args for the different types of layout view events.
    
    ArcGIS.Desktop.Layouts.Events.LayoutViewEvent.Subscribe((args) =>
    {
      var lv = args.LayoutView;
      var layout = args.LayoutView?.Layout;
    
      switch(args.Hint)
      {
        case LayoutViewEventHint.PauseDrawingChanged:
        case LayoutViewEventHint.DrawingComplete:
        case LayoutViewEventHint.ExtentChanged:
        case LayoutViewEventHint.Activated:
        case LayoutViewEventHint.Deactivated:
        case LayoutViewEventHint.Closed:
        case LayoutViewEventHint.Closing:
        case LayoutViewEventHint.Opened:
          System.Diagnostics.Debug.WriteLine($"LayoutViewEvent ElementEventHint: {args.Hint.ToString()}");
          break;
      }
    });
    Inheritance Hierarchy

    System.Object
       ArcGIS.Core.Events.EventBase
          ArcGIS.Core.Events.CompositePresentationEvent<TPayload>
             ArcGIS.Desktop.Layouts.Events.LayoutViewEvent

    Requirements

    Target Platforms: Windows 11, Windows 10

    ArcGIS Pro version: 3 or higher.
    See Also