Navigational Workflows Unleashed in WWF/ASP.NET 3.5

using System;
using System.Workflow.Activities;

namespace DateSiteNavigation
{
    /// <summary>
    /// Class for representing the error event arguments that
    /// get passed into the navigational workflow.
    /// </summary>
    [Serializable]
    public class ErrorEventArgs : ExternalDataEventArgs 
	{
        private ErrorType _errorType;

        /// <summary>
        /// Constructor.
        /// </summary>
        /// <param name="instanceId"></param>
        /// <param name="errorType"></param>
        public ErrorEventArgs(Guid instanceId, ErrorType errorType)
            : base(instanceId)
        {
            _errorType = errorType;
        }

        /// <summary>
        /// Get or set the error type.
        /// </summary>
        public ErrorType ErrorType
        {
            get { return _errorType; }
            set { _errorType = value; }
        }
	}


    /// <summary>
    /// Class representing different error types. This is used in the 
    /// ErrorEventArgs to help determine the error page to go to.
    /// </summary>
    [Serializable]
    public sealed class ErrorType
    {
        private string _errorName;

        // static object references
        public static readonly ErrorType Generic = new ErrorType("generic");
        public static readonly ErrorType Unknown = new ErrorType("unknown");

        /// <summary>
        /// Private constuctor.
        /// </summary>
        /// <param name="errorName"></param>
        private ErrorType(string errorName)
        {
            _errorName = errorName;
        }

        /// <summary>
        /// Get the error name.
        /// </summary>
        /// <returns></returns>
        public string GetErrorName()
        {
            return _errorName;
        }
    }
}