WPF 委托事件

新建委托类：

   public class DataChangeEventArgs : EventArgs
    {
        // 定义委托
        public delegate void DataChangeHandler(object sender, DataChangeEventArgs args);
        public string devA { get; set; }

        public string devB { get; set; }

        public DataChangeEventArgs(string s1, string s2)
        {
            devA = s1;
            devB = s2;
        }
    }

主窗口中定义

 public void DataChangeDev(object sender, DataChangeEventArgs args) { 
            try
            {
                // 更新窗体控件
                int a, b;
                a = Convert.ToInt32(args.devA);
                b = Convert.ToInt32(args.devB);
            }
            catch {
            }
        }

private void DevClick(object sender, RoutedEventArgs e)
        {
             DevSet devset = new DevSet();
            devset.DataChange += new DataChangeHandler(DataChangeDev);
            devset.textBox_Adevnum.Text = "0";
            devset.textBox_Bdevnum.Text = "0";
            devset.Top = this.Height / 3;
            devset.Left =  this.Height / 2;
            devset.ShowDialog();
        }

子窗口中

public partial class DevSet : Window
    {

        public event DataChangeHandler DataChange;// 声明事件

        // 调用事件函数

        public void OnDataChange(object sender, DataChangeEventArgs args)

        {
            if(DataChange != null)
            {
                DataChange(this, args);
            }
        }


        public DevSet()
        {
            InitializeComponent();
          
        }

    private void button_set_Click(object sender, RoutedEventArgs e)
        {
            try
            {
            
                // this.Owner.
                // 触发事件， 传递自定义参数

                OnDataChange(this, new DataChangeEventArgs(textBox_Adevnum.Text, textBox_Bdevnum.Text));
                this.Close();
            }
            catch {

            }
            

        }
    }