总结C#动态调用WCF接口的两种方法

第二种调用方式

public class WCFInvoke
  {
    /// <summary>
    /// 你需要调用的服务契约
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="func"></param>
    /// <returns></returns>
    public static T Invoke<T>(Func<IDoubleService, T> func)
    {
      IServiceInvoker serviceInvoker=new WCFServiceInvoker();
      return serviceInvoker.InvokeService(func);
    }
  }
public interface IServiceInvoker
  {
    void InvokeService<T>(Action<T> invokeHandler) where T : class;
    TReslt InvokeService<T, TReslt>(Func<T, TReslt> invokeHandler) where T : class;
  }
 
public class WCFServiceInvoker:IServiceInvoker
  {
    private static readonly ChannelFactoryManager FactoryManager = new ChannelFactoryManager();
 
    private static readonly ClientSection ClientSection =
      ConfigurationManager.GetSection("system.serviceModel/client") as ClientSection;
 
 
    public void InvokeService<T>(Action<T> invokeHandler) where T : class
    {
      KeyValuePair<string, string> endpointNameAddressPair = GetEndpointNameAddressPair(typeof(T));
      var arg = FactoryManager.CreateChannel<T>(endpointNameAddressPair.Key, endpointNameAddressPair.Value);
      var obj2 = (ICommunicationObject)arg;
      try
      {
        invokeHandler(arg);
      }
      finally
      {
        try
        {
          if (obj2.State != CommunicationState.Faulted)
          {
            obj2.Close();
          }
        }
        catch
        {
          obj2.Abort();
        }
      }
    }
 
 
    public TReslt InvokeService<T, TReslt>(Func<T, TReslt> invokeHandler) where T : class
    {
      KeyValuePair<string, string> endpointNameAddressPair = GetEndpointNameAddressPair(typeof(T));
      var arg = FactoryManager.CreateChannel<T>(endpointNameAddressPair.Key, endpointNameAddressPair.Value);
      var obj2 = (ICommunicationObject)arg;
      try
      {
        return invokeHandler(arg);
      }
      finally
      {
        try
        {
          if (obj2.State != CommunicationState.Closed || obj2.State != CommunicationState.Faulted)
          {
            obj2.Close();
          }
        }
        catch
        {
          obj2.Abort();
        }
      }
    }
 
    private KeyValuePair<string, string> GetEndpointNameAddressPair(Type serviceContractType)
    {
      var configException =
        new ConfigurationErrorsException(
          string.Format(
            "No client endpoint found for type {0}. Please add the section <client><endpoint name="myservice" address="http://www.easck.com/pre>


	

public class ChannelFactoryManager : IDisposable
  {
    private static readonly Dictionary<Type, ChannelFactory> Factories = new Dictionary<Type, ChannelFactory>();
    private static readonly object SyncRoot = new object();
 
    public void Dispose()
    {
      Dispose(true);
    }
 
    public virtual T CreateChannel<T>() where T : class
    {
      return CreateChannel<T>("*", null);
    }
 
    public virtual T CreateChannel<T>(string endpointConfigurationName) where T : class
    {
      return CreateChannel<T>(endpointConfigurationName, null);
    }
 
    public virtual T CreateChannel<T>(string endpointConfigurationName, string endpointAddress) where T : class
    {
      T local = GetFactory<T>(endpointConfigurationName, endpointAddress).CreateChannel();
      ((IClientChannel)local).Faulted += ChannelFaulted;
      return local;
    }
 
    protected virtual ChannelFactory<T> GetFactory<T>(string endpointConfigurationName, string endpointAddress)
      where T : class
    {
      lock (SyncRoot)
      {
        ChannelFactory factory;
        if (!Factories.TryGetValue(typeof(T), out factory))
        {
          factory = CreateFactoryInstance<T>(endpointConfigurationName, endpointAddress);
          Factories.Add(typeof(T), factory);
        }
        return (factory as ChannelFactory<T>);
      }
    }
 
    private ChannelFactory CreateFactoryInstance<T>(string endpointConfigurationName, string endpointAddress)
    {
      ChannelFactory factory = null;
      factory = !string.IsNullOrEmpty(endpointAddress) ? new ChannelFactory<T>(endpointConfigurationName, new EndpointAddress(endpointAddress)) : new ChannelFactory<T>(endpointConfigurationName);
 
      factory.Faulted += FactoryFaulted;
      factory.Open();
      return factory;
    }
 
    private void ChannelFaulted(object sender, EventArgs e)
    {
      var channel = (IClientChannel)sender;
      try
      {
        channel.Close();
      }
      catch
      {
        channel.Abort();
      }
    }
 
    private void FactoryFaulted(object sender, EventArgs args)
    {
      var factory = (ChannelFactory)sender;
      try
      {
        factory.Close();
      }
      catch
      {
        factory.Abort();
      }
      Type[] genericArguments = factory.GetType().GetGenericArguments();
      if ((genericArguments.Length == 1))
      {
        Type key = genericArguments[0];
        if (Factories.ContainsKey(key))
        {
          Factories.Remove(key);
        }
      }
    }
 
    protected virtual void Dispose(bool disposing)
    {
      if (disposing)
      {
        lock (SyncRoot)
        {
          foreach (Type type in Factories.Keys)
          {
            ChannelFactory factory = Factories[type];
            try
            {
              factory.Close();
            }
            catch
            {
              factory.Abort();
            }
          }
          Factories.Clear();
        }
      }
    }
  }								 
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