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Runtime Generated WCF Service Exposing .NET or COM Types

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24 Apr 2008CPOL8 min read 80K   1.1K   51  
A WCF service wrapper is generated at runtime around a .NET or COM type to expose its interface.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
using System.ServiceModel;
using System.ServiceModel.Description;
using System.ServiceModel.Channels;
using System.Net;
using System.Threading;

namespace WcfServiceHost
{
    public class SvcHost
    {               
        private ServiceHost serviceHost = null;

        /// <summary>
        /// Create WCF service host acting as proxy for the true type
        /// </summary>
        /// <param name="path">Path to an assembly file containing the true type.</param>
        /// <param name="name">Name of a generated WCF proxy type.</param>
        /// <param name="sessionAllowed">Session support indicator.</param>
        /// <returns>Success indicator.</returns>
        public bool CreateServiceHost(string path, string name, bool sessionAllowed)
        {           
            bool br = false;   
            string className = name;
         
            // Generate type for WCF service. This type serves as proxy of a true type.
            Type serviceType = WcfGenerator.GenerateServiceType(path, className, sessionAllowed);

            if (null != serviceType)
            {
                serviceHost = OpenServiceHost(serviceType); 
                if (null != serviceHost)
                {
                    foreach (ServiceEndpoint sep in serviceHost.Description.Endpoints)
                        Console.WriteLine(sep.Address.ToString());

                    br = true;
                }
            }

            return br;
        }

        /// <summary>
        /// Actually create and open service host.
        /// </summary>
        /// <param name="serviceType">WCF service type.</param>
        /// <returns>Service host object.</returns>
        internal static ServiceHost OpenServiceHost(Type serviceType)
        {
            ServiceHost serviceHost = null;
            if (null != serviceType)
            {
                try
                {
                    serviceHost = new ServiceHost(serviceType);
                    serviceHost.Open();
                }
                catch (Exception e)
                {
                    serviceHost = null;
                    Console.WriteLine("ERROR! {0}", e.Message);
                }
            }

            return serviceHost;
        }
    }
}

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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
Software Developer (Senior)
Israel Israel


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