using ASSET_API;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Asset
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                Console.WriteLine("Hello");

                Console.WriteLine("Before startup");
                aamapi93 a = new aamapi93();
                var v1 = a.amStartup();
                Console.WriteLine("After startup " + v1);

                Console.WriteLine("username");
                var username = Console.ReadLine();
                Console.WriteLine("password");
                var password = Console.ReadLine();

                var v2 = a.amOpenConnection("TEST ACCEPT", username, password);
                Console.WriteLine("After amOpenConnection " + v2);

                var v3 = a.amIsConnected(v2);
                Console.WriteLine("After amIsConnected " + v3);
            }
            catch (Exception ex)
            {
                Console.WriteLine("ERREUR : " + ex.Message);
            }

            Console.Read();
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Runtime.InteropServices;

namespace ASSET_API
{
    public sealed class aamapi93
    {
        [DllImport(@"C:AssetManagerbinaamapi93.dll", EntryPoint = "AmStartup", CallingConvention = CallingConvention.StdCall)]
        private static extern IntPtr _AmStartupW();

        public IntPtr amStartup()
        {
            return _AmStartupW();
        }


        [DllImport(@"C:AssetManagerbinaamapi93.dll", EntryPoint = "AmOpenConnectionW", CallingConvention = CallingConvention.StdCall)]
        private static extern IntPtr _AmOpenConnectionW([InAttribute()] [MarshalAsAttribute(UnmanagedType.LPWStr)] string pszDataSource,
                                                        [InAttribute()] [MarshalAsAttribute(UnmanagedType.LPWStr)] string pszUser,
                                                        [InAttribute()] [MarshalAsAttribute(UnmanagedType.LPWStr)] string pszPwd);

        public IntPtr amOpenConnection(string datasource, string username, string password)
        {
            IntPtr i = IntPtr.Zero;
            i = _AmOpenConnectionW(datasource, username, password);
            //yourlog.debug(string.Format("amOpenConnection executed. Cnx {0} opened.", i.ToString()));
            return i;
        }

        [DllImport(@"C:AssetManagerbinaamapi93.dll", EntryPoint = "AmIsConnectedW", CallingConvention = CallingConvention.StdCall)]
        private static extern IntPtr _AmIsConnectedW(IntPtr hApiCnxBase);

        public IntPtr amIsConnected(IntPtr CnxBase)
        {
            IntPtr i = IntPtr.Zero;
            i = _AmIsConnectedW(CnxBase);
            //yourlog.debug(string.Format("amOpenConnection executed. Cnx {0} opened.", i.ToString()));
            return i;
        }
    }
}