Question

在WP7应用中发生未处理的异常时，有没有办法发送包含详细信息的电子邮件？

我见过WCF日志记录/电子邮件发送方法，但我没有公开托管服务的地方。

Answer 1

看看Andy Pennell的“little watson”。它运作得很好。

Answer 2

您唯一的另一个选择是使用EmailComposeTask。这使得用户可以发送邮件，因为它会为您提供电子邮件地址，但它是目前在没有WCF服务的情况下发送邮件的唯一方式。

示例1：

private void emailAddressChooserTask_Completed(object sender, EmailResult e) 
{ 
    if (e.TaskResult == TaskResult.OK) 
    { 
        MessageBox.Show("Selected email :" + e.Email); 

        //in-real world application user expect to select it from his contacts and if not found enter manually. 
        //EmailComposeTask emailComposeTask = new EmailComposeTask(); 
        //emailComposeTask.To = e.Email; 
        //emailComposeTask.To = saveEmailAddressTask.Email; 
        //emailComposeTask.Body = "WP7 Emails Demo"; 
        //emailComposeTask.Cc = "testmail2@test.com"; 
        //emailComposeTask.Subject = "Windows Phone 7"; 
        //emailComposeTask.Show(); 
    } 
}

示例2：

private void composeMail_Click(object sender, RoutedEventArgs e) 
{ 
    EmailComposeTask emailComposeTask = new EmailComposeTask(); 
    emailComposeTask.To = "chris@example.com"; 
    emailComposeTask.To = saveEmailAddressTask.Email; 
    emailComposeTask.Body = "WP7 Emails Demo"; 
    emailComposeTask.Cc = "testmail2@test.com"; 
    emailComposeTask.Subject = "Windows Phone 7"; 
    emailComposeTask.Show(); 
}

Souce：http://www.windowsphonegeek.com/articles/1-how-to-perform-email-tasks-in-a-wp7-app

Answer 3

我在我的应用程序中使用以下内容，它有点令人费解，但有效。以下代码位于App.xaml.cs中：

/// <summary>
/// Indicates whether the application needs to quit due to a previous exception
/// </summary>
private static bool _appMustQuit = false;

/// <summary>
/// Exception class that will be unhandled causing application to quit
/// </summary>
private class AppQuitException : Exception {}



// Code to execute on Unhandled Exceptions
private void Application_UnhandledException( object sender,
                                             ApplicationUnhandledExceptionEventArgs e )
{
  if( ( e.ExceptionObject is AppQuitException ) == false ) {
    Debug.WriteLine( "App:Application_UnhandledException - " + e.ToString() );

    if( Debugger.IsAttached ) {
      // An unhandled exception has occurred; break into the debugger
      Debugger.Break();

    } 

    // Compose error report
    StringBuilder report = new StringBuilder( 1024 );

    report.AppendFormat( "{0}", LangResources.ErrorReportContent );
    report.AppendFormat( "Message: {0}\n", e.ExceptionObject.Message );
    if( e.ExceptionObject.InnerException != null ) {
      report.AppendFormat( "Inner: {0}\n", e.ExceptionObject.InnerException.Message );
    }
    report.AppendFormat( "\nStackTrace: {0}\n", e.ExceptionObject.StackTrace );

    if( MessageBox.Show( "Unexpected Error", "Error", MessageBoxButton.OKCancel ) 
        == MessageBoxResult.OK ) {
      e.Handled = true;

      // Email the error report
      Tasks.ComposeEmail( "\"Developer\" <your@emailaddress.com>", "MyApp Error Report",
        report.ToString() );
      _appMustQuit = true;
    }
  }
}


// Code to execute when the application is activated (brought to foreground)
// This code will not execute when the application is first launched
private void Application_Activated( object sender, ActivatedEventArgs e )
{
  var state = PhoneApplicationService.Current.State;

  if( state.ContainsKey( "AppMustQuit" ) ) {
    throw new AppQuitException();

  } else {
    // Restore other tombstoned variables

  }
}

// Code to execute when the application is deactivated (sent to background)
// This code will not execute when the application is closing
private void Application_Deactivated( object sender, DeactivatedEventArgs e )
{
  if( _appMustQuit ) {
    state["AppMustQuit"] = true;

  } else {
    // Save other variables for tombstoning

  }
}

Tasks是一个静态类，带有Microsoft.Phone.Tasks命名空间中的一堆辅助函数。

using Microsoft.Phone.Tasks;

namespace MyApp
{
  /// <summary>
  /// Utility class for performing various phone tasks
  /// </summary>
  public static class Tasks
  {
    /// <summary>
    /// Composes an email using the specified arguments
    /// </summary>
    /// <param name="to">The recepient(s) of the email</param>
    /// <param name="subject">Email subject</param>
    /// <param name="body">Email contents</param>
    /// <param name="cc">The recipient(s) on the cc line of the email</param>
    public static void ComposeEmail( string to, string subject, string body,
                                     string cc = "" )
    {
      var task = new EmailComposeTask() {
        To = to,
        Subject = subject,
        Body = body,
        Cc = cc,
      };
      task.Show();
    }
  }
}

要稍微解释一下代码，使用EmailComposeTask会导致您的应用被逻辑删除。由于我不想在未处理的异常后继续执行应用程序，因此我将一个布尔值保存到PhoneApplicationService的{{3}}字典中，以便在用户发送电子邮件后，当应用程序重新唤醒时，我可以查找此布尔值并抛出另一个故意未处理的异常。第二个例外导致应用程序退出。

Answer 4

如果有人在后台寻找电子邮件（不加载EmailComposeTask），那么MailMessage可能是最佳选择，因此，它还允许EmailComposeTask根本不支持的附件。它允许您使用自己的Gmail或任何其他帐户发送电子邮件，而无需在后台打扰用户。

你可以从NuGet Install-Package MailMessage获得它试一试，但是我自己还没有使用它，所以你可能需要从authors site购买它只需29.99美元值得为此付出代价。免费版也可以使用，但在发送电子邮件之前它会在应用程序中显示一条弹出消息。

在WP7中发送未处理异常的电子邮件

4 个答案: