error when attempting to open Navisworks with the plugin

[edufourGCYZK]

Hello,

I compiled the following code and then placed the compiled files into a document within the plugin document.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Autodesk.Navisworks.Api;
using Autodesk.Navisworks.Api.Plugins;

namespace ChangeCouleurPlugin
{
[PluginAttribute("ChangeCouleurPlugin", "ADSK", ToolTip = "ChangeCouleurPlugin", DisplayName = "ChangeCouleurPlugin")]
public class ChangeCouleurPlugin : AddInPlugin
{
public override int Execute(params string[] parameters)
{
Search search = new Search();
search.Selection.SelectAll();
search.SearchConditions.Add(SearchCondition.HasPropertyByDisplayName("Entity Handle", "Value").EqualValue(VariantData.FromDisplayString("C0A4")));

ModelItemCollection searchResults = search.FindAll(Autodesk.Navisworks.Api.Application.ActiveDocument, false);

Application.ActiveDocument.CurrentSelection.CopyFrom(searchResults);

return 0;
}
}
}

After completing these steps, I attempted to open Navisworks but encountered a pop-up message that refuses to disappear.

Is the problem with my code or is there another issue?

Thank you for the response !

Edward Dufour

[jabowabo]

Autodesk.Navisworks.Api.Application.ActiveDocument

There is no active document on first start up. You should create a trigger, like a button, to start the command after a document is opened.

[edufourGCYZK]

I don't fully understand what you mean. When I open Navisworks, I directly open a file.

Will creating a trigger solve the problem?

[jabowabo]

Comment out the lines below and see if it runs:

// ModelItemCollection searchResults = search.FindAll(Autodesk.Navisworks.Api.Application.ActiveDocument, false);

// Application.ActiveDocument.CurrentSelection.CopyFrom(searchResults);

 My guess is that it's trying to access 'ActiveDocument' before your file is fully opened.

[edufourGCYZK]

It didn't change anything; the same thing pops up when I try to open Navisworks.

[jabowabo]

Will it load if you comment everything in the Execute method?

[edufourGCYZK]

No, it will not work. I just tried it and encountered the same problem.

Here is a picture of the code that I loaded.

[jabowabo]

Are you targeting the correct .NET framework (v 4.8 for Navisworks 2024)?

[edufourGCYZK]

I was previously using the .NET 7.0 framework, and now I'm attempting to switch to a different framework in my project. However, the .NET4.8 framework is not appearing in the list of target frameworks in Visual Studio Community, despite being downloaded on my computer. Do you have any ideas why it is not showing up?

 

[jabowabo · Accepted solution]

You created your project as a .NET Core project. You'll need to re-create it as a .NET Framework project and target version 4.8.

https://versionsof.net/

[upadhye.vinay]

@edufourGCYZK 

you refer to this link. might help you get started with plugin development

https://twentytwo.space/2020/04/08/creating-navisworks-add-ins/

[naveen.kumar.t]

Hi @edufourGCYZK ,

@jabowabo's suggestion is right and will assist you in resolving the issue.

FYI, Your problem appears to be similar to the one described in the link below.

https://forums.autodesk.com/t5/navisworks-api/navisworks-manage-2023-crashes-when-adding-plugin-to-t... 

[burkhard.walger]

Easy approach to find out whats going on:
Do start roamer.exe on command line with a log file argument.

"C:\Program Files\Autodesk\Navisworks Manage 2024\Roamer.exe" -log c:\temp\roamer-crash.log MyModel.nwd

After the crash inspect the file c:\temp\roamer-crash.log for clues to the error.

You can find more usefull command line switches here:
https://help.autodesk.com/view/NAV/2024/ENU/?guid=GUID-3891FB9F-7BF1-4510-A1EE-121E975C0ACE

HTH