Filling colour in polygon feature within a feature layer
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.
