复习WCF（5）----- xxx

 

在复习WCF（2）那篇的最后面稍微讲了一下数据协定 这里在稍微说一下

实际上就是一个普通的类而已，一个基本的Class。完全可以看成多层架构中的实体层，就只是数据载体而已

区别在于使用DataContractAttribute属性和DataMemberAttribute属性修饰

note:如果某个属性没有用DataMemberAttribute修饰 那客户端的代理类就不会生成此属，DataMemberAttribute对静态成员无效

    [DataContract]
    public class CompositeType
    {
        bool boolValue = true;
        string stringValue = "Hello ";

        [DataMember]
        public bool BoolValue
        {
            get { return boolValue; }
            set { boolValue = value; }
        }

        [DataMember]
        public string StringValue
        {
            get { return stringValue; }
            set { stringValue = value; }
        }
    }

 

 

异常处理 其实和平常的try catch一样:

class Client
    {
        static void Main()
        {
            DemonstrateCommunicationException();
            DemonstrateTimeoutException();

            Console.WriteLine();
            Console.WriteLine("Press <ENTER> to terminate client.");
            Console.ReadLine();
        }

        static void DemonstrateCommunicationException()
        {
            CalculatorClient client = new CalculatorClient();

            try
            {
                double value1 = 100.00D;
                double value2 = 15.99D;
                double result = client.Add(value1, value2);
                Console.WriteLine("Add({0},{1}) = {2}", value1, value2, result);

                Console.WriteLine("Simulated network problem occurs...");
                client.Abort();

                value1 = 22.00D;
                value2 = 7.00D;
                result = client.Divide(value1, value2);
                Console.WriteLine("Divide({0},{1}) = {2}", value1, value2, result);
                client.Close();

                Console.WriteLine("Service successfully returned all results.");
            }
            catch (TimeoutException exception)  
            {
                Console.WriteLine("Got {0}", exception.GetType());
                client.Abort();
            }
            catch (CommunicationException exception)
            {
                Console.WriteLine("Got {0}", exception.GetType());
                client.Abort();
            }
        }

        static void DemonstrateTimeoutException()
        {
            CalculatorClient client = new CalculatorClient();

            try
            {
                double value1 = 100.00D;
                double value2 = 15.99D;
                double result = client.Add(value1, value2);
                Console.WriteLine("Add({0},{1}) = {2}", value1, value2, result);

                Console.WriteLine("Set timeout too short for method to complete...");
                client.InnerChannel.OperationTimeout = TimeSpan.FromMilliseconds(0.001);

                value1 = 22.00D;
                value2 = 7.00D;
                result = client.Divide(value1, value2);
                Console.WriteLine("Divide({0},{1}) = {2}", value1, value2, result);


                client.Close();

                Console.WriteLine("Service successfully returned all results.");
            }
            catch (TimeoutException exception)
            {
                Console.WriteLine("Got {0}", exception.GetType());
                client.Abort();
            }
            catch (CommunicationException exception)
            {
                Console.WriteLine("Got {0}", exception.GetType());
                client.Abort();
            }
        }
    }