Filling colour in polygon feature within a feature layer

JaewonYang — Mon, 07 Jan 2019 08:51:15 GMT

Hello all,

I am working on an add-in that calculates the ground deformations induced due to underground tunnel. After that I have some buildings (Polygon feature layer) on the surface that are prone to damage by the deformations. I am calculating the damage and for assessment purpose, based on calculated damage for each building I want to fill in different colours in different building polygons.

Currently I applied buffer for convenience but buffer colours all the polygons at once and also, I cannot change the buffer colour as well. If someone can help that will be helpful.

the lower picture shows the buffered buildings along the tunnel route.

private async void button1_ClickAsync(object sender, EventArgs e)

{

Strain();

string layerName = "BuildingsD";

var sectionLayer = MapView.Active.Map.GetLayersAsFlattenedList().FirstOrDefault((lyr) => lyr.Name.StartsWith(layerName)) as FeatureLayer;

if (sectionLayer == null)

{

ArcGIS.Desktop.Framework.Dialogs.MessageBox.Show("Buildings not found");

//return;

}

else

{

try

{

string st_in = Convert.ToString(sectionLayer);

//string st_out = "BuildingD_Buffer";

//string Distance = "Field, OBJECTID";

var args = Geoprocessing.MakeValueArray(st_in, null, @"7 Meters");

string tool_path = "analysis.Buffer";

IGPResult ret = await Geoprocessing.ExecuteToolAsync(tool_path, args/*, envArray*/);

if (ret.IsFailed)

{

ArcGIS.Desktop.Framework.Dialogs.MessageBox.Show($@"Error {ret.ErrorCode} in GP Tool: {ret.ErrorMessages}");

}

catch (Exception)

{ }

The above code I used to buffer the buildings but I can't get how do I select individual building and fill the colour or change the buffer colour for the selected building feature.

topic Filling colour in polygon feature within a feature layer in ArcGIS Pro SDK Questions

Filling colour in polygon feature within a feature layer