Hey there! Let's break down how to pull connected object info and their associated connector details for your Autodesk Inventor C# plugin. First, a quick tweak to your existing loop: that CurrencyAPIv2.IAssetInstance maps to Inventor's native AssetInstance, and casting it to ComponentOccurrence makes total sense assuming those asset instances are component references. Now let's jump into the connection logic:

1. Grab All Connectors from a ComponentOccurrence #

Every component instance (ComponentOccurrence) has a Connectors collection that holds all its defined connectors (think axes, holes, mating faces, etc.). Here's how to loop through them:

foreach (CurrencyAPIv2.IAssetInstance s in objects) 
{
    var compOcc = s.NativeObject as ComponentOccurrence;
    if (compOcc == null) continue; // Skip if it's not a component instance

    // Iterate through every connector on the component
    foreach (Connector connector in compOcc.Connectors)
    {
        // Pass the connector to a helper method to get connection details
        GetConnectionDetails(connector);
    }
}

2. Pull Connected Object & Target Connector Info #

Each Connector has a Connections collection that stores all active links to other objects. For each Connection, you can grab the target object (either another component's connector or an assembly work feature) and its details:

private void GetConnectionDetails(Connector sourceConnector)
{
    // Skip connectors with no active connections
    if (sourceConnector.Connections.Count == 0)
    {
        Console.WriteLine($"Connector {sourceConnector.Name} has no active connections");
        return;
    }

    foreach (Connection connection in sourceConnector.Connections)
    {
        Connector targetConnector = connection.OtherConnector;
        
        if (targetConnector == null)
        {
            Console.WriteLine($"Connector {sourceConnector.Name} is connected to a non-component object (like an assembly work feature)");
            continue;
        }

        // Get the component instance the target connector belongs to
        ComponentOccurrence targetCompOcc = targetConnector.Parent as ComponentOccurrence;
        
        // Print out key details
        Console.WriteLine($"Source Component: {sourceConnector.Parent.Name} -> Connector: {sourceConnector.Name}");
        Console.WriteLine($"Connected to Target Component: {targetCompOcc.Name} -> Connector: {targetConnector.Name}");
        Console.WriteLine($"Connection Type: {connection.ConnectionType}");
        Console.WriteLine("---");
    }
}

3. Key API Bits to Remember #

• ComponentOccurrence.Connectors: Returns all connectors defined on the component instance
• Connector.Connections: Gets all active connections for the current connector
• Connection.OtherConnector: Retrieves the connector on the other end of the connection
• Connector.Parent: Gets the parent object of the connector (usually a ComponentOccurrence or assembly work feature)
• Connection.ConnectionType: Tells you the type of connection (e.g., kMateConnection, kFlushConnection—matching Inventor's constraint types)

Quick Notes #

• Make sure your project has a reference to Autodesk.Inventor.Interop to access these APIs
• Some connectors might link to assembly work features (like reference planes/axes) instead of other components—you'll want to add checks for those cases if needed
• This logic is tailored for assembly environments; if you're working in a part file, the Connector.Parent would be a part feature instead of a ComponentOccurrence

内容的提问来源于stack exchange，提问作者Jochen Kühner