FaultContract Based 的Exception Handling in WCF

1、Create a error class just like this

namespace TeamService.Projects

{

    [DataContract]

    public class ProjectServiceError

    {

        private string operation;

        private string errorMessage;

 

        [DataMember]

        public String Operation

        {

            get { return operation; }

            set { operation = value; }

        }

 

        [DataMember]

        public String ErrorMessage

        {

            get { return errorMessage; }

            set { errorMessage = value; }

        }

    }

}

2、通过FaultContract将其运用到Service Contract中制定的Operation上面

 

using TeamService.Data;

namespace TeamService

{

    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the interface name "IProjectService" in both code and config file together.

    [ServiceContract]

    public interface IProjectService

    {

        [OperationContract]

        [FaultContract(typeof(TeamService.Projects.ProjectServiceError))]

        int CreateMember(MyMember myMember);

 

 

 

 3、在Service Implementation中以抛出Exception的方式植入这个

TeamService.Projects.ProjectServiceError对象

 

   public int CreateMember(MyMember myMember)

        {

            if (myMember == null)

            {

                ProjectServiceError err = new ProjectServiceError();

                err.Operation = " CreateMember";

                err.ErrorMessage = "Input parameter is null.";

 

                throw new FaultException(err.Operation + "：êo" + err.ErrorMessage);

            }

 

后面还有代码，不写了

 

4、客户端调用

 

private void button1_Click(object sender, RoutedEventArgs e)

        {

            TeamClient.ProjectServiceReference.ProjectServiceClient sv = new ProjectServiceClient();

 

            MyMember mb = null;

            try

            {

                if (sv != null)

                {

                    sv.CreateMember(mb);

                }

 

            }

            catch (Exception ex)

            {

                MessageBox.Show(ex.ToString());

            }

        }

 

 5、效果显示：