winform使用委托和事件在窗体之间传值

Posted 2021-12-01 siyunianhua

定义委托和事件,并且触发这个事件

     //定义委托
        public delegate void ShowOutStockDelegate(List<OutStockResultDto> outStockResultDto);
        //定义事件
        public event ShowOutStockDelegate ShowOutStockEvent;
        private void btnConfirm_Click(object sender, EventArgs e)
        {
             ShowOutStockEvent(outStockResultDtos);
        }

在目标窗体上，实例化上述窗体

FrmEndTask frmEndTask = new FrmEndTask();
//触发这个事件
frmEndTask.ShowOutStockEvent += new FrmEndTask.ShowOutStockDelegate(EndTask_ShowOutStockEvent);
protected void EndTask_ShowOutStockEvent(List<OutStockResultDto> outStockResultDtos)
{
 //这里就能拿到你想要的数据了
_outStockResultDtos = outStockResultDtos;
}