Error in Dynamo Add-In for Revit 2022

[elango_saramani]

Hello,

I’m developing a Dynamo add-in for Revit 2022 and encountering errors on specific lines in my code. Here’s what I have:

Error Messages:

• Line 20: [PushButton button = panel.AddPushButton("Run Dynamo", "RunDynamo", Assembly.GetExecutingAssembly().Location, "MyDynamoAddIn.RunDynamoCommand");]
• Line 39: [var dynamoController = DynamoController.Instance;]

• I’ve checked that:

  • The correct Revit and Dynamo API references are included.
  • Dynamo is installed properly.

  Can anyone help me figure out what might be going wrong? Thank you!

using Autodesk.Revit.UI;
using Autodesk.Revit.DB;
using Dynamo.Applications;
using Dynamo.Services;
using System;
using System.Reflection;
using Dynamo.Graph.Workspaces;
using System.Linq;

namespace MyDynamoAddIn
{
public class MyAddIn : IExternalApplication
{
public Result OnStartup(UIControlledApplication application)
{
RibbonPanel panel = application.CreateRibbonPanel("My Dynamo Panel");
PushButton button = panel.AddPushButton("Run Dynamo", "RunDynamo", Assembly.GetExecutingAssembly().Location, "MyDynamoAddIn.RunDynamoCommand");
return Result.Succeeded;
}

public Result OnShutdown(UIControlledApplication application)
{
return Result.Succeeded;
}
}

public class RunDynamoCommand : IExternalCommand
{
Result IExternalCommand.Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
{
string dynamoFilePath = @"C:\Path\To\Your\DynamoScript.dyn"; // Update with your path

// Start Dynamo and open the script
var dynamoController = DynamoController.Instance;
dynamoController.Open(dynamoFilePath);

return Result.Succeeded;
}
}
}

[moturi.magati.george]

Hi @elango_saramani 

Kindly try asking the question on the Dynamo forum. There are more knowledgeable dynamo developers on the platform than here.

https://forum.dynamobim.com/

[j0hnp]

I have a thorough sample for using Dynamo graphs within a C# Revit plugin here:
https://github.com/johnpierson/Relay/blob/master/src/Methods/DynamoMethods.cs

Compare your methods to that, and I bet you can get it sorted.

[elango_saramani]

Hi 

Thank you for your Reply. I have attached the image below. Could you kindly advise me on this?

[Mohamed_Arshad]

Hi @elango_saramani 

Have you check the below link?

Re: Dynamo script in Revit API - Page 2 - Autodesk Community