MyException

自定义Exception

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Runtime.Serialization;



namespace Model

{

    /// <summary>

    /// This class is used to define the custom exception.

    /// </summary>

    [DataContract]

    public class MyExceptionContainer:Exception

    {

        /// <summary>

        /// The exception's starck message.

        /// </summary>

        [DataMember]

        public string ErrorMessage { get; set; }



        /// <summary>

        /// The custom informtion.

        /// </summary>

        [DataMember]

        public string Description { get; set; }



        #region Constructor



        public MyExceptionContainer() { }



        public MyExceptionContainer(string errorMessage, string description)

        {

            this.ErrorMessage = errorMessage;

            this.Description = description;

        }



        #endregion

    }

}

View Code

UserException

using System;

using System.Runtime.Serialization;

using System.Security.Permissions;



namespace Constant

{

    /// <summary>

    /// The class is defined for const fields of login exception.

    /// </summary>

    [Serializable]

    public class UserException:Exception,ISerializable

    {

        #region Fields



        private string message;

        private Exception innerException;



        #endregion



        #region Constructors



        public UserException() { }



        public UserException(string message)

        {

            this.message = message;

        }



        public UserException(string message, Exception exception)

        {

            this.message = message;

            this.innerException = exception;

        }



        #endregion



        #region Const fileds of user functions' exception.



        public const string UserNameIsNull = "*Username is null.";

        public const string PasswordIsNull = "*Password is null.";

        public const string LoginedFailed = "*Username or password is wrong.";

        public const string ChangeNewPasswordIsNull = "*New password is null.";

        public const string ChangeConfirmIsNull = "*Confirm is null.";

        public const string TwiceEnterIsNotSame = "*New password and confirm is not same.";

        public const string PasswordIsWrong = "*Old Password is wrong.";

        public const string UpdatePasswordFailed = "The error is come from UpdatePasswordFailed Method in UserDal Class.";

        public const string RetrieveUserByUserName = "The error is come from RetrieveUserByUserName Method in UserDal Class.";

        public const string ChangePasswordSucceed = "Change password succeed.";

        public const string FormatException = "The parameter error.";



        #endregion

    }

}

View Code

DAL

        public int UpdatePassword(string newPassword, string userName)

        {

            int influenceNumber = 0;



            try

            {

                string sqlText = SqlText.UpdatePassword;

                SqlParameter[] parms = new SqlParameter[] {

                    new SqlParameter("@password", newPassword),

                    new SqlParameter("@userName", userName),

                };



                influenceNumber = SqlHelper.ExecuteNonQuery(sqlText, parms);

            }

            catch (SqlException ex)

            {

                throw new UserException(UserException.UpdatePasswordFailed, ex);

            }



            return influenceNumber;

        }

View Code

BLL

        public IList<Exam> RetrieveExamList(string userName, int order)

        {

            try

            {

                return examDal.RetrieveExamList(userName, order);

            }

            catch (ExamException ex)

            {

                log.Error(ExamException.RetrieveExamList, ex);

                throw new FaultException<MyExceptionContainer>( new MyExceptionContainer() {

                    ErrorMessage = ex.Message,

                    Description = ExamException.RetrieveExamList

                });

            }

        }

View Code

Use

                catch (FaultException<MyExceptionContainer> myException)

                {

                    log.Error(myException.Message, myException);

                }

                catch (FaultException faultException)

                {

                    log.Error(faultException.Message, faultException);

                }

                catch (Exception exception)

                {

                    log.Error(exception.Message, exception);

                }

View Code