system_71.txt

来自「一套三层结构的文件管理OA系统源码」· 文本 代码 · 共 28 行

[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		public void ShowMessage(object sender, EventArgs e) 
		{ MessageBox.Show("another form call this method!"); } 

		private void button1_Click(object sender, System.EventArgs e)
		{
			Form2 frm=new Form2(); 
			//frm.CallMessage+=new EventHandler(ShowMessage); 
		    frm.CallMessage += new System.EventHandler(ShowMessage);
			frm.ShowDialog();

		}
	}
public class Form2 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Button button1;
		public event System.EventHandler CallMessage;
...
private void button1_Click(object sender, System.EventArgs e)
		{
			//System.EventHandler 
		this.CallMessage(sender,e);
		}