事件

Question

可能我描述的不太清楚，就是怎么才能我查公布出去TextBox.Leave事件

Answer 1

public delegate void BeginEventHandler(string text);class  里面
        public event BeginEventHandler OnBegin;
触发             if (OnBegin != null)
                OnBegin("Begin.");  

Answer 2

//假设CTR是你那个复合类:        public class CTR{
            private TextBox txt;
            private Button btn;
            public delegate void LeaveHandler(object sender,EventArgs e);
            public event LeaveHandler Leave;
            public CTR(TextBox txt, Button btn)
            {
                this.btn = btn;
                this.txt = txt;
                txt.Leave += new EventHandler(txt_Leave);
            }            void txt_Leave(object sender, EventArgs e)
            {
                this.OnLeave(e);
            }
            void OnLeave(EventArgs e)
            {
                if (Leave != null) {
                    Leave(this, e);
                }
            }
        }//使用示范,先在form1上画textBox1和button1    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            CTR ctr = new CTR(textBox1, button1);
            ctr.Leave += new CTR.LeaveHandler(txt_Leave);
        }
        void txt_Leave(object sender, EventArgs e)
        {
            MessageBox.Show("123");
        }
    }