Using ExecuteCommandArgs to open a dock pane empties the DockpaneManager object, not allowing it to to open any dock pane in ArcGIS Pro SDK for .NET.

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Workaround

Do not use the QueuedTask to open the dock pane. It has to be opened on the UI thread. Try this instead: protected override Func ExecuteCommandArgs(string id) { try { ArcGIS.Desktop.Framework.Dialogs.MessageBox.Show($"message: {id}"); // Run the command specified by the id passed into ExecuteCommandArgs IPlugInWrapper wrapper = FrameworkApplication.GetPlugInWrapper(id); var command = wrapper as ICommand; if (command != null && command.CanExecute(null)) command.Execute(null); } catch (System.Exception e) { ArcGIS.Desktop.Framework.Dialogs.MessageBox.Show($"ERROR: {e}", "Error running command"); } return (object[] args) => DoNothing(); } private Task DoNothing() { return Task.CompletedTask; }

Schritte zur Reproduzierung