Creating Buffer Based on User Defined Point

[jjackson229]

Hi everyone! I am super new to SDK, so there may be an obvious answer. Is there a way for a user to select a point on a map and then that point is buffered a set distance? I'm using Visual Studio 2022, and the ArcGIS Pro Module Add-in (C#). 

I've looked at the pro snippets to buffer a MapPoint on the GitHub, but I'm just not connecting the dots on it.  I've been able to set it so a user can select a point on the map and it shows the coordinates in a message box, and have an initial message box pop up prompting the user to select a point, I've just been running into issues getting a buffer to work. I've included my code down below, thanks for any advice!

namespace Tester
{
    internal class MapTool1 : MapTool
    {
        public MapTool1()
        {
            IsSketchTool = true;
            SketchType = SketchGeometryType.Point;
            SketchOutputMode = SketchOutputMode.Map;
        }

        // This happens before the tool is run //
        protected override Task OnToolActivateAsync(bool active)
        {
            MessageBox.Show(
                "Please Select a Point on the Map!"
            );

            MapPoint pt = MapPointBuilderEx.CreateMapPoint(1.0, 1.0, SpatialReferences.WGS84);
            Geometry ptBuffer = GeometryEngine.Instance.Buffer(pt, 5.0);
            Polygon buffer = ptBuffer as Polygon;

            return base.OnToolActivateAsync(active);
        }

        //This happens when the user clicks and begins to use the tool
        protected override Task<bool> OnSketchCompleteAsync(Geometry geometry)
        {

            MessageBox.Show(
                "North: " + geometry.Extent.YMax.ToString() + "\n" +
                "South: " + geometry.Extent.YMin.ToString() + "\n" +
                "East: " + geometry.Extent.XMax.ToString() + "\n" +
                "West: " + geometry.Extent.XMin.ToString()
            );


             MapPoint pt = MapPointBuilderEx.CreateMapPoint(1.0, 1.0, SpatialReference.WGS84);
             Geometry ptBuffer = GeometryEngine.Instance.Buffer(pt, 5.0);
            Polygon buffer = ptBuffer as Polygon;

      
          
            return base.OnSketchCompleteAsync(geometry);
        }
    }
}

[jjackson229 · Accepted solution]

As an update - I managed to get this working this morning. I found the code snippet here - https://github.com/Esri/arcgis-pro-sdk-community-samples/blob/master/Geoprocessing/GeoprocessingExec...

I updated the script and it looks like this now and seems to be working like I need it to!

namespace Tester
{
    internal class MapTool1 : MapTool
    {
        public MapTool1()
        {
            IsSketchTool = true;
            SketchType = SketchGeometryType.Point;
            SketchOutputMode = SketchOutputMode.Map;
        }

        // This happens before the tool is run //
        protected override Task OnToolActivateAsync(bool active)
        {
            MessageBox.Show(
                "Please Select a Point on the Map!"
            );


            return base.OnToolActivateAsync(active);
        }

        //This happens when the user clicks and begins to use the tool
        protected override async Task<bool> OnSketchCompleteAsync(Geometry geometry)
        {
            var valueArray = await QueuedTask.Run(() =>
            {
                var g = new List<object>() { geometry, };
                // Creates a 2 mile buffer around the geometry object
                // null indicates a default output name is used
                return Geoprocessing.MakeValueArray(g, null, @"2 Miles");
            });

            await Geoprocessing.ExecuteToolAsync("analysis.Buffer", valueArray);
            return true;
        }
    }
}