Question

是否可以在不使用NETCFSvcUtil生成代理的情况下与WCF服务进行通信？

我正在尝试使用紧凑框架在移动设备上调用WCF服务。 我不想使用NETCFSvcUtil为特定原因生成代理。

我在移动端有这个示例代码来测试它：

    // This is the contract defined at the client side (mobile device)
    public interface IService1
    {
        string GetData(int value);
    }

    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                string address = "http://192.168.30.88:8731/Design_Time_Addresses/WcfServiceLibrary1/Service1/";

                // It throws here ....
                var channelFactory = CreateDefaultBinding().BuildChannelFactory<IService1>(new System.ServiceModel.Channels.BindingParameterCollection());
                var channel = channelFactory.CreateChannel(new EndpointAddress(new Uri(address)));
                var result = channel.GetData(5);
                this.Text = result.ToString();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
        }

        public static System.ServiceModel.Channels.Binding CreateDefaultBinding()
        {
            System.ServiceModel.Channels.CustomBinding binding = new System.ServiceModel.Channels.CustomBinding();
            binding.Elements.Add(new System.ServiceModel.Channels.TextMessageEncodingBindingElement(System.ServiceModel.Channels.MessageVersion.Soap11, System.Text.Encoding.UTF8));
            binding.Elements.Add(new System.ServiceModel.Channels.HttpTransportBindingElement());

            return binding;
        }
    }

但是我得到了这个异常：请求了通道类型'CallingWCFFromDevice.IService1'，但Binding'CustomBinding'不支持它，或者没有正确配置它来支持它。参数名称：TChannel

了解发生了什么？我猜我没有正确使用BuildChannelFactory ......

Answer 1

我不确定您对安全性有什么要求，但使用其中一个预定义的绑定（如BasicHttpBinding）可能更简单;这将使您的代码如下所示：

        IService1 channel = null;
        try {
            BasicHttpBinding binding = new BasicHttpBinding();
            EndpointAddress address = new EndpointAddress("http://192.168.30.88:8731/Design_Time_Addresses/WcfServiceLibrary1/Service1/");
            IChannelFactory<IService1> factory = binding.BuildChannelFactory<IService1>(new BindingParameterCollection());
            channel = factory.CreateChannel(address);
            // Use the channel here...
        }
        finally {
            if(channel != null && ((ICommunicationObject)channel).State == CommunicationState.Opened) {
                ((ICommunicationObject)channel).Close();
            }
        }

在您对IService1的定义中，您不包含任何必需的属性，接口需要应用ServiceContractAttribute，并且接口中的方法需要应用OperationContractAttribute，如下所示：

[ServiceContract] public interface IService1
{
    [OperationContract] string GetData(int value);
}

与WCF的Compact Framework通信，没有NETCFSvcUtil生成的代理

1 个答案: