WinForm 自定义对话框 获取返回值

/* 1.定义Form1以对话框方式弹出 */

1 Form1 form1= new Form1();
2 if (Form1.ShowDialog() == DialogResult.OK)
3 {
4 MessageBox.Show(Form1.Param);
5 }

/* 2.在Form1窗口中定义变量 */

1 public string Param; 

/* 3.给变量复制并返回DialogResult.OK结束对话 */

1 Param = “Hello.”;
2 
3 this.DialogResult = DialogResult.OK;