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  • C# 委托事件

    public partial class SubWindow : Window
    {
    public delegate void PassValuesHandler(object sender, PassValuesEventArgs e);

    public event PassValuesHandler PassValuesEvent;

    public SubWindow()
    {
    InitializeComponent();
    }

    private void btnOK_Click(object sender, RoutedEventArgs e)
    {
    string value1 = tbValue1.Text; // Text Property return value is string type .
    int value2;
    Int32.TryParse(tbValue2.Text, out value2);

    PassValuesEventArgs args = new PassValuesEventArgs(value1, value2);
    if ( PassValuesEvent!=null)
    {
    PassValuesEvent(this, args);
    }

    this.Close();
    }
    }


    public partial class MainWindow : Window
    {
    public MainWindow()
    {
    InitializeComponent();
    }

    private void btnOpenSubWindow_Click(object sender, RoutedEventArgs e)
    {
    SubWindow subWindow = new SubWindow();

    // 订阅事件
    subWindow.PassValuesEvent += new SubWindow.PassValuesHandler(ReceiveValues);

    subWindow.Show();
    }

    private void ReceiveValues(object sender, PassValuesEventArgs e)
    {
    this.tbValue1.Text = e.Value1;
    this.tbValue2.Text = e.Value2.ToString();
    }
    }

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  • 原文地址:https://www.cnblogs.com/jeenmablog/p/12530780.html
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