How to programmatically set COM+ Component -> Transactions to Not Supported?

Question

I am looking for a solution to programmatically modify Com+ Component Property -> Transaction Support to “Not Supported”

The manual steps are the following:

1. Open Component Services dialog (comexp.msc)
2. Expand Component Services -> Computers -> My Computer
3. Find and expand COM+ QC Dead Letter Queue Listener
4. Expand folder Components inside the opened component
5. Find component QC.DLQListener and open context menu for this component and select properties
6. On the Properties screen, select “Transactions” tab and set Transactions Support to Not Supported
7. Click “OK” to Save the changes

Answer 1

After I spent several hours on this problem, I've finally got a solution on C#.

I've got a huge insight from the following articles:

• Changin the transaction atribute using COMAdminCatalog

• Retrieve settings from COM+ components via C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using COMAdmin;

namespace SetComPlusTransactionsToNotRequired
{
    class Program
    {
        static void Main(string[] args)
        {
            COMAdminCatalog catalog;
            COMAdminCatalogCollection applications;

            // Get the catalog
            catalog = new COMAdminCatalog();

            // Get the list of all COM+ applications contained within this catalog
            applications = (COMAdminCatalogCollection)catalog.GetCollection("Applications");
            applications.Populate();

            foreach (COMAdminCatalogObject application in applications)
            {
                if (application.get_Value("Name") == "COM+ QC Dead Letter Queue Listener")
                {
                    COMAdminCatalogCollection components;
                    components = (COMAdminCatalogCollection)applications.GetCollection("Components", application.Key);
                    components.Populate();

                    foreach (COMAdminCatalogObject component in components)
                    {
                        Console.WriteLine("Component: " + component.Name);
                        component.set_Value("Transaction", COMAdminTransactionOptions.COMAdminTransactionNone);
                    }
                    components.SaveChanges();
                }
            }
        }
    }
}