初学WCF。。。。
服务端：
服务契约：
[ServiceContract(Namespace ="http://serverModel.Samples",SessionMode =SessionMode.Required, CallbackContract = typeof(ICalcualtorDuplexCallBack))] public interface IService2 { [OperationContract(IsOneWay = true)] void Clear(); [OperationContract(IsOneWay = true)] void Add(double input); [OperationContract(IsOneWay = true)] void Subtraction(double input); [OperationContract(IsOneWay = true)] void Multiplication(double input); [OperationContract(IsOneWay =true)] void Addition(double input); } /// /// 回调 /// public interface ICalcualtorDuplexCallBack { [OperationContract(IsOneWay = true)] void Equals(double result); [OperationContract(IsOneWay = true)] void Equation(string eqn); } 服务部分：
1 public class Service2 : IService2 2 { 3 private double _result; 4 private string _equation; 5 private ICalcualtorDuplexCallBack _callback = null; 6 public Service2() 7 { 8 _result = 0.0D; 9 _equation = _result.ToString(CultureInfo.InvariantCulture);10 //获得Callback回调的公告11 _callback = OperationContext.Current.GetCallbackChannel ();12 }13 /// 14 /// 清除15 /// 16 public void Clear()17 {18 _callback.Equation(_equation+"="+_result.ToString(CultureInfo.InvariantCulture));19 _result = 0.0D;20 _equation = _result.ToString(CultureInfo.InvariantCulture);21 }22 /// 23 /// 增加24 /// 25 /// 参数26 public void Add(double input)27 {28 _result += input;29 _equation += "+" + input.ToString(CultureInfo.InvariantCulture);30 _callback.Equals(_result);31 }32 /// 33 /// 减34 /// 35 /// 参数36 public void Subtraction(double input)37 {38 _result -= input;39 _equation += "-" + input.ToString(CultureInfo.InvariantCulture);40 _callback.Equals(_result);41 }42 /// 43 /// 乘44 /// 45 /// 参数46 public void Multiplication(double input)47 {48 _result *= input;49 _equation += "*" + input.ToString(CultureInfo.InvariantCulture);50 _callback.Equals(_result);51 52 }53 /// 54 /// 除55 /// 56 /// 参数57 public void Addition(double input)58 {59 _result /= input;60 _equation += "*" + input.ToString(CultureInfo.InvariantCulture);61 _callback.Equals(_result); 62 }63 64 65 } 配置文件:app.config
在双工的时候 不支持 BasicHttpBinding，改wsDualHttpBinding
客户端：
客户端 public partial class Window1 : Window,ServiceReference2.IService2Callback { public Window1() { InitializeComponent(); } private void button1_Click(object sender, RoutedEventArgs e) { System.ServiceModel.InstanceContext instanceContext = new InstanceContext(this); ServiceReference2.Service2Client clientw = new Service2Client(instanceContext); double value = 2.0D; clientw.Open(); clientw.Add(value); clientw.Subtraction(value); clientw.Multiplication(value); clientw.Addition(value); clientw.Clear(); clientw.Close(); } public void Equals(double result) { // MessageBox.Show("Result:"+result); Console.WriteLine("Result:" + result); } public void Equation(string eqn) { Console.WriteLine("Equation:" + eqn); } } }
