发送数据到非父窗口

Question

我有2个部分类，窗口A（frmSchedule）和窗口B（frmAddLesson）。窗口A中有一个数据绑定的ListView控件。窗口A打开窗口B，该窗口旨在创建一个新的课程对象，并且我想将该课程数据放回到窗口A.我可以通过哪些方式实现此目标？有没有简单的方法在C＃中使用应用程序范围变量？

我试过从单个基类派生两个部分类，然后使用该类将课程数据导回第一个窗口，但我无法弄清楚。 :(

欲了解更多信息，我已经奠定了这里的程序：

我有一个主窗口（fmrSchedule）绑定到一个ObservableCollection ListView控件： （为简单起见，我会假装课程对象仅具有1个数据的该事项）

<ListView Name="lstLessons" Margin="204,15,192,125" ItemsSource="{Binding Path=LessonList}"> 
     <ListView.View> 
      <GridView> 
       <GridViewColumn DisplayMemberBinding="{Binding Time}">Time</GridViewColumn> 
      </GridView> 
     </ListView.View> 
    </ListView> 

在代码：

public partial class frmSchedule : Window 
{   
    public frmSchedule() 
    { 
     InitializeComponent(); 

     //ListView sample data 
     aLesson = new Lesson(); 
     aLesson.Time = 9; 
     m_myLessons.Add(aLesson); 
     lstLessons.ItemsSource = LessonList; 
    } 

    Lesson aLesson; 

    private ObservableCollection<Lesson> m_myLessons = new ObservableCollection<Lesson>(); 
    public ObservableCollection<Lesson> LessonList { get { return m_myLessons; } } 

    //Add Lesson 
    private void btnAdd_Click(object sender, RoutedEventArgs e) 
    { 
     //New frmAddLesson window 
     frmAddLesson addLesson = new frmAddLesson(); 
     addLesson.Show(); 
    } 

的btnAdd按钮控制打开第二形式（frmAddLesson），其用于创建一个新的课程对象被添加到该课程列表在主窗口：（在此情况下，时间是基于一个组合框选择集）

public partial class frmAddLesson : Window 
{ 
    public frmAddLesson(System.DateTime? DateTime) 
    { 
     InitializeComponent(); 

     dateTime = DateTime; 
     radPrivate.IsChecked = true; 
    } 

    //DateTime from calendar selection 
    private DateTime? dateTime; 
    //Lesson object 
    private Lesson theLesson; 

    //ADD LESSON 
    private void btnAdd_Click(object sender, RoutedEventArgs e) 
    { 
     //Create new Lesson object 
     theLesson = new Lesson(); 

     //Set Lesson property 
     theLesson.Time = (int)cmbTime.SelectedValue; //Time 

     this.Close(); 
    } 
} 

的课类：

public class Lesson 
{ 
    public Lesson() 
    { 
     //Stuff for later 
    } 

    private int m_Time; 

    public int Time { get { return m_Time; } set { m_Time = value; } } 
} 

Answer 1

public partial class frmSchedule : Window 
{  
    ... 
    private void btnAdd_Click(object sender, RoutedEventArgs e) 
    { 
    //New frmAddLesson window 
    frmAddLesson addLesson = new frmAddLesson(this); 
    addLesson.Show(); 
    } 

    public void AddLesson(Lesson lesson) 
    { 
    ... 
    } 
} 

public partial class frmAddLesson : Window  
{ 
    public frmAddLesson(frmSchedule schedule)  
    {  
    InitializeComponent();  

    this.schedule = schedule; 

    ... 

    }  
    frmSchedule schedule; 

    //ADD LESSON  
    private void btnAdd_Click(object sender, RoutedEventArgs e)  
    {  
    //Create new Lesson object  
    var theLesson = new Lesson();  

    //Set Lesson property  
    theLesson.Time = (int)cmbTime.SelectedValue; //Time  

    schedule.AddLesson(theLesson); 

    this.Close();  
    }  
}