QuerySelectedGhComponent.cs

// #! csharp
#r "nuget: Neo4j.Driver, 5.28.3"
using System;
using System.Linq;
using Rhino;
using Rhino.Commands;
using Grasshopper;
using Grasshopper.Kernel;
using Grasshopper.GUI.Canvas;

// Get the Grasshopper plugin instance
var gh = Grasshopper.Instances.ActiveCanvas;
if (gh == null)
{
    RhinoApp.WriteLine("Grasshopper is not running.");
    return Result.Failure;
}

var ghDoc = gh.Document;
if (ghDoc == null)
{
    RhinoApp.WriteLine("No Grasshopper document is open.");
    return Result.Failure;
}

// Get all selected objects in the Grasshopper document
var selectedObjects = ghDoc.SelectedObjects();
if (selectedObjects.Count == 0)
{
    RhinoApp.WriteLine("No components are selected in Grasshopper.");
    return Result.Success;
}

RhinoApp.WriteLine("Selected Grasshopper components:");
foreach (var obj in selectedObjects.OfType<IGH_Component>())
{
    RhinoApp.WriteLine($"- {obj.Name} (ID: {obj.InstanceGuid})");
}

return Result.Success;