在子表单中的事件 FormClosed 上添加对函数的调用。
Form subForm = new Form();
subForm.FormClosed += subForm_FormClosed;
subForm.ShowDialog();
private void subForm_FormClosed(object sender, EventArgs e)
{
//Here you can update what you wish.
}
表单关闭subForm_FormClosed
后将调用。subForm