ArcGIS Pro SDK Add-In C#: Add a Progress Bar to a CreateLayer geoprocessing tool

[JadedEarth]

I want to add a progress bar in the Active Map that "spins" left-to-right
while a CreateLayer geoprocessing tool is loading the polygons.

There are 2K+ polygons and so it takes a bit of time to load. Once all are loaded,
I want the progress bar to disappear.

How do I do that with the following code:

private async void BtnRun_Click(object sender, RoutedEventArgs e)
        {
            sdePath = TboxPath.Text;            //E:\WorkingFolder\SWATAddIn\MG_Connection.sde
            in_features = TboxInFeature.Text;   //MG.dbo.APEX_SWAT_COMP_HUC8
            int lyrIndex = 0;
            string lyrName = TboxLyrName.Text;

            //Create and add a layer to the active map
            string url = System.IO.Path.Combine(sdePath, in_features);
            Uri uri = new Uri(url);

            //Creat a Progress Bar user control
            ProgressBar pBar = new ProgressBar();

            //Create a MapViewOverlayControl. 
            var mapViewOverlayControl = new MapViewOverlayControl(pBar, true, true, true, OverlayControlRelativePosition.BottomCenter, .5, .8);

            //Configure the progress bar
            pBar.Minimum = 0;
            pBar.Maximum = 100;
            pBar.IsIndeterminate = true;
            pBar.Width = 300;
            pBar.Value = 10;
            pBar.Height = 25;
            pBar.Visibility = Visibility.Visible;

            //Add to the active map
            MapView.Active.AddOverlayControl(mapViewOverlayControl);

            //Close this window
            Close();

            await QueuedTask.Run(() =>
            {
                Layer lyr = LayerFactory.Instance.CreateLayer(uri, MapView.Active.Map, lyrIndex, lyrName);
            });            
        }

Right now, the progress bar just keeps spinning because I don't know where to call the pBar.Hide() in the above code, without it disappearing BEFORE all polygons are loaded.

Appreciate any help.

[CharlesMacleod]

The best way is to use the progressor argument of QueuedTask.Run https://pro.arcgis.com/en/pro-app/latest/sdk/api-reference/index.html#topic10996.html and the "built-in" Progressor class.

Looking at the "Run" method definition can be a little intimidating because of the syntax associated with the delegate parameter (eg Func<T>, Func<Task<T>>, Action, etc) but if u notice, the second parameter is of type Progressor or CancelableProgressor.

There are a couple of snippets here: non-cancelable: https://github.com/esri/arcgis-pro-sdk/wiki/ProSnippets-Framework#progressor---simple-and-non-cancel... and cancelable (which is a little more work): https://github.com/esri/arcgis-pro-sdk/wiki/ProSnippets-Framework#progressor---cancelable 

In your case, based on the "simple-and-non-cancelable" snippet referenced above, you would want something like this (please note the comment regarding the Debugger - in other words when you are debugging your addin in Visual Studio you will **not** see the progressor )

private async void BtnRun_Click(object sender, RoutedEventArgs e) {
  sdePath = TboxPath.Text;            

  //....etc

  //make a progressor
  var ps = new ArcGIS.Desktop.Framework.Threading.Tasks.ProgressorSource(
                 "Doing my thing...", false);

 //Run layer create and show a progressor
 //NOTE: when you run this in the DEBUGGER you will NOT see the dialog
  await QueuedTask.Run(() => {
     Layer lyr = LayerFactory.Instance.CreateLayer(uri, MapView.Active.Map, 
                       lyrIndex, lyrName);
  }, ps.Progressor);
}