Possible to open docx files in Word Online when double-clicking them in a synced desktop library?

jirikovo 

I have a solution I rolled in Chatgpt. It would probably take someone that is familiar with C# and Visual Studio to run. Maybe you can find one of your employees and get them to run it. I was going to try to charge you guys but it only took me a couple of minutes. Cheers and I hope this helps. 

using Microsoft.Win32;
using System;
using System.Diagnostics;
using Microsoft.Win32;

class Program
{
static void Main(string[] args)
{
RegisterFileAssociation(".docx", "WordOnlineRegEditor", "Open .docx files with YourAppName");
}

static void RegisterFileAssociation(string extension, string appName, string description)
{
using (RegistryKey key = Registry.ClassesRoot.CreateSubKey(extension))
{
key.SetValue("", appName);
}

using (RegistryKey key = Registry.ClassesRoot.CreateSubKey(appName))
{
key.SetValue("", description);
using (RegistryKey commandKey = key.CreateSubKey("shell\\open\\command"))
{
commandKey.SetValue("", "C:\WordOnlineRegEditor.exe \"%1\"");
}
}
}
static void Main(string[] args)
{
if (args.Length > 0)
{
OpenInWordOnline(args[0]);
}
}

static void OpenInWordOnline(string filePath)
{
string wordOnlineUrl = "https://word.office365.com/";
string fileUrl = Uri.EscapeDataString(filePath);
string fullUrl = $"{wordOnlineUrl}/?wopisrc=OneDrive&wdFirstNav=1&wdAllowInteractivity=False&FileUrl={fileUrl}";

Process.Start(fullUrl);
}
}