Delegate event 委托事件---两个From窗体使用委托事件

窗体如下：

 

 public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Form2 f = new Form2();
            f.ShowDialog();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            Form2.SendMessageEvent += Form2_SendMessageEvent;
        }

        void Form2_SendMessageEvent()
        {
            this.textBox1.Text = this.textBox1.Text +"收消息成功";
        }
    }

public partial class Form2 : Form
    {
        public delegate void SendMessageDelegate();
        public static event SendMessageDelegate SendMessageEvent;
        public Form2()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            SendMessageEvent();
        }
    }

demo下载路径：https://download.csdn.net/download/u010713920/10302679