ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Framework.Events Namespace / ToolEventArgs Class / PreviousID Property
Example

In This Topic
    PreviousID Property
    In This Topic
    Gets the DAML ID of the previously active tool.
    Syntax
    public string PreviousID {get;}
    Public ReadOnly Property PreviousID As String
    Example
    Subscribe to Active Tool Changed Event
    private void SubscribeEvent()
    {
      ArcGIS.Desktop.Framework.Events.ActiveToolChangedEvent.Subscribe(OnActiveToolChanged);
    }
    private void UnSubscribeEvent()
    {
      ArcGIS.Desktop.Framework.Events.ActiveToolChangedEvent.Unsubscribe(OnActiveToolChanged);
    }
    private void OnActiveToolChanged(ArcGIS.Desktop.Framework.Events.ToolEventArgs args)
    {
      string prevTool = args.PreviousID;
      string newTool = args.CurrentID;
    }
    Requirements

    Target Platforms: Windows 11, Windows 10

    ArcGIS Pro version: 3 or higher.
    See Also