Extending WCF Part I

using System;
using System.IO;
using System.Windows;
using System.ServiceModel;
using ExtendingWCFPartI.WcfExtentions;
using ExtendingWCFPartI.Common.Services;
using System.Text;

namespace ExtendingWCFPartI.Client
{
    /// <summary>
    /// Interaction logic for Window1.xaml
    /// </summary>
    public partial class Window1 : Window
    {
        private static readonly string ExternalConfigPath = Path.GetFullPath(AppDomain.CurrentDomain.BaseDirectory + "..\\..\\WcfClientConfiguration.xml");

        public Window1()
        {
            InitializeComponent();
        }

        private void GetCustomerList()
        {
            try
            {
                var proxy = WcfClientHelper.GetProxy<ICustomerService>(ExternalConfigPath);
                DataContext = proxy.GetCustomers();
            }
            catch(EndpointNotFoundException enfe)
            {
                MessageBox.Show("Please run the service before. " + Environment.NewLine + enfe.Message);
            }
            catch(Exception exception)
            {
                MessageBox.Show(exception.Message);
            }
        }

        private void btnGetCustomers_Click(object sender, RoutedEventArgs e)
        {
            GetCustomerList();
        }

        private void btnGetException_Click(object sender, RoutedEventArgs e)
        {
            GetExceptionFromService();
        }

        private void GetExceptionFromService()
        {
            try
            {
                var proxy = WcfClientHelper.GetProxy<ICustomerService>(ExternalConfigPath);
                proxy.GetException();
            }
            catch (Exception exception)
            {
                ShowMessage(GetExceptionDetail(exception));
            }
        }

        private string GetExceptionDetail(Exception exception)
        {
            var sb = new StringBuilder();
            sb.Append(string.Format("Exception type: {0}{1}", exception.GetType().FullName, Environment.NewLine));
            sb.Append(string.Format("Exception Message: {0}{1}", exception.Message, Environment.NewLine));
            var innerException = exception.InnerException;
            var counter = 1;
            while (null != innerException)
            {
                sb.Append(string.Format("Inner Exception {0} type: {1}{2}", counter, innerException.GetType().FullName, Environment.NewLine));
                sb.Append(string.Format("Inner Exception {0} message: {1}{2}", counter, innerException.GetType().FullName, Environment.NewLine));
                innerException = innerException.InnerException;
                counter++;
            }
            sb.Append(string.Format("Stacktrace: {0}", exception.StackTrace));
            return sb.ToString();
        }

        private void ShowMessage(string message)
        {
            txtMessage.Text = message;
        }
    }
}