CadParamPluging/Cad/CadContext.cs

using System;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;

namespace CadParamPluging.Cad
{
    public class CadContext : IDisposable
    {
        public Document Document { get; }
        public Database Database => Document.Database;
        public Transaction Transaction { get; private set; }

        public CadContext(Document document)
        {
            Document = document;
            Transaction = Database.TransactionManager.StartTransaction();
        }

        public void Commit()
        {
            Transaction?.Commit();
        }

        public void Dispose()
        {
            Transaction?.Dispose();
            Transaction = null;
        }
    }
}