2个窗体用事件传数据

    privatevoidbutton1_Click(objectsender,EventArgse)               {                      Form2f =newForm2();                       f.SetTextEvent += Test;                       f.ShowDialog();               }
  privatevoidTest(strings)               {                       textBox1.Text = s;               }

在B窗体中（不需要传参数可以不用）  publiceventAction SetTextEvent;              privatevoidForm2_Load(objectsender,EventArgse)               {                       SetTextEvent(“ddd”);               }

在B窗体被加载时，会调用A窗体的Test方法