ProgIDFromCLSID

using System;

using System.Runtime.InteropServices;

using ESRI.ArcGIS.Server;

public static class AOFactory <T>

{

        public static T CreateObject(IServerContext SC, object ArcObject)

        {

            string progId = string.Empty;

            try

            {

                Type t = ArcObject.GetType();

                Guid guid = t.GUID;

                progId = Win32API.ProgIDFromCLSID(ref guid);

            }

            catch { }

            if (!string.IsNullOrEmpty(progId))

                return (T)SC.CreateObject(progId);

            else

                return default(T);

        }

}

public static class Win32API

{

       [DllImport("ole32.dll", CharSet = CharSet.Unicode, PreserveSig = false)]

        public static extern string ProgIDFromCLSID([In()]ref Guid clsid);

}

Sample:

ESRI.ArcGIS.Geometry.IPoint aoPoint = AOFactory<Geometry.IPoint>.CreateObject(sc, new ESRI.ArcGIS.Geometry.PointClass());

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