利用微软企业库轻松给你的WPF程序加上异常处理和日志记录

拦截异常并用企业库处理：

 

private void AttachUnhandledException()
        {

　　　　//这个异常一样要加，否则如果后台线程发生异常，DispatherUnhandledException是扑捉不到的。
            AppDomain.CurrentDomain.UnhandledException += (sender, args) =>
            {
                Exception ex = new Exception(String.Format(LanguageReader.GetValue("ApplicationMultiThreadError"), args.ExceptionObject));
                HandleException(ex);
            };

            this.DispatcherUnhandledException += (sender, args) =>
            {
#if !DEBUG
                args.Handled = true;
#endif
                HandleException(args.Exception);
            };
        }

        private void HandleException(Exception ex)
        {
            ExceptionPolicy.HandleException(ex, "Unhandled Exception Policy");
#if !DEBUG
            string errorMessage = ex.InnerException == null ? ex.Message : ex.InnerException.Message;
            var result = MessageBox.Show(LanguageReader.GetValue("ApplicationErrorInfo"), LanguageReader.GetValue("ApplicationErrorTitle"), MessageBoxButton.YesNo,
                MessageBoxImage.Error, MessageBoxResult.Yes, MessageBoxOptions.DefaultDesktopOnly);
            if (result == MessageBoxResult.Yes)
            {
                if (Thread.CurrentThread.ManagedThreadId == App.Current.Dispatcher.Thread.ManagedThreadId)
                    Shutdown();
                else
                    Process.GetCurrentProcess().Kill();
            }
#endif
        }

配置企业库：

首先是App.config

 

 

<configuration>
  <configSections>
    <section name="enterpriseLibrary.ConfigurationSource" type="Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ConfigurationSourceSection, Microsoft.Practices.EnterpriseLibrary.Common, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
    <section name="modules" type="Luna.WPF.ApplicationFramework.Modularity.ModulesConfigurationSection, Luna.WPF.ApplicationFramework" />
  </configSections>
  <enterpriseLibrary.ConfigurationSource selectedSource="File Configuration Source">
    <sources>
      <add name="File Configuration Source" type="Microsoft.Practices.EnterpriseLibrary.Common.Configuration.FileConfigurationSource, Microsoft.Practices.EnterpriseLibrary.Common, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
        filePath="EnterpriseLibrary.config" />
    </sources>
  </enterpriseLibrary.ConfigurationSource>
</configuration>

最后是EnterpriseLibrary.config

 

<configuration>
  <configSections>
    <section name="loggingConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.LoggingSettings, Microsoft.Practices.EnterpriseLibrary.Logging, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
    <section name="exceptionHandling" type="Microsoft.Practices.EnterpriseLibrary.ExceptionHandling.Configuration.ExceptionHandlingSettings, Microsoft.Practices.EnterpriseLibrary.ExceptionHandling, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
    <section name="dataConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSettings, Microsoft.Practices.EnterpriseLibrary.Data, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
    <section name="securityCryptographyConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Security.Cryptography.Configuration.CryptographySettings, Microsoft.Practices.EnterpriseLibrary.Security.Cryptography, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
  </configSections>
  <loggingConfiguration name="Logging Application Block" tracingEnabled="true"
    defaultCategory="General" logWarningsWhenNoCategoriesMatch="true">
    <listeners>
      <add fileName="trace.log" header="----------------------------------------"
        footer="----------------------------------------" formatter="Text Formatter"
        listenerDataType="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.FlatFileTraceListenerData, Microsoft.Practices.EnterpriseLibrary.Logging, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
        traceOutputOptions="LogicalOperationStack" filter="All" type="Microsoft.Practices.EnterpriseLibrary.Logging.TraceListeners.FlatFileTraceListener, Microsoft.Practices.EnterpriseLibrary.Logging, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
        name="FlatFile TraceListener" />
    </listeners>
    <formatters>
      <add template="Message: {message}" type="Microsoft.Practices.EnterpriseLibrary.Logging.Formatters.TextFormatter, Microsoft.Practices.EnterpriseLibrary.Logging, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
        name="Text Formatter" />
    </formatters>
    <categorySources>
      <add switchValue="All" name="General">
        <listeners>
          <add name="FlatFile TraceListener" />
        </listeners>
      </add>
    </categorySources>
    <specialSources>
      <allEvents switchValue="All" name="All Events" />
      <notProcessed switchValue="All" name="Unprocessed Category" />
      <errors switchValue="All" name="Logging Errors & Warnings" />
    </specialSources>
  </loggingConfiguration>
  <exceptionHandling>
    <exceptionPolicies>
      <add name="Unhandled Exception Policy">
        <exceptionTypes>
          <add type="System.Exception, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
            postHandlingAction="None" name="Exception">
            <exceptionHandlers>
              <add logCategory="General" eventId="100" severity="Error" title="Enterprise Library Exception Handling"
                formatterType="Microsoft.Practices.EnterpriseLibrary.ExceptionHandling.TextExceptionFormatter, Microsoft.Practices.EnterpriseLibrary.ExceptionHandling, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
                priority="0" useDefaultLogger="true" type="Microsoft.Practices.EnterpriseLibrary.ExceptionHandling.Logging.LoggingExceptionHandler, Microsoft.Practices.EnterpriseLibrary.ExceptionHandling.Logging, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
                name="Logging Handler" />
            </exceptionHandlers>
          </add>
        </exceptionTypes>
      </add>
    </exceptionPolicies>
  </exceptionHandling>
  <securityCryptographyConfiguration>
    <hashProviders>
      <add algorithmType="System.Security.Cryptography.SHA512Managed, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
        saltEnabled="true" type="Microsoft.Practices.EnterpriseLibrary.Security.Cryptography.HashAlgorithmProvider, Microsoft.Practices.EnterpriseLibrary.Security.Cryptography, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
        name="SHA512Managed" />
    </hashProviders>
  </securityCryptographyConfiguration>
</configuration>