如何在不退出WP7中程序的情况下使用SaveContactTask？

Question

当我使用此任务时，保存联系人后我无法在应用程序中做任何事情，除了显示带有消息的消息框外，当此任务完成后，如何再次返回我的应用程序！

Answer 1

This should work out the box. When task is finished your application takes control again. You can control task result using Completed event handler

this.saveContactTask.Completed += new EventHandler<SaveContactResult>(saveContactTask_Completed);

private void saveContactTask_Completed(object sender, SaveContactResult e)
{
    switch (e.TaskResult)
    {
        case TaskResult.OK:
        MessageBox.Show("Contact is successfully saved.");
        break;
        case TaskResult.Cancel:
        MessageBox.Show("The user canceled the task.");
        break;
        case TaskResult.None:
        MessageBox.Show("NO information regarding the task result is available.");
        break;
    }
}

Here you can find fully functional example which works exactly as you want. You may take a look and compare with your implementation

http://windowsphonegeek.com/tips/8-How-to-use-SaveContactTask-in-Windows-Phone-Mango