訊息通知機制

 1. 接受變動通知者 

範例1

  frm物料更新.TrxStatusUpdateHandler m;

  m = new frm物料更新.TrxStatusUpdateHandler(async delegate ()

 {    try

   {    while (!this.IsHandleCreated) {; }

          if (IsHandleCreated)

              DataGridView1.Invoke((MethodInvoker)UpdateDataGridView);

     } catch (Exception ex) { LogWriter.ShowErrMsg(ex); }

}); frm物料更新.OnTrxStatusUpdated += m;

範例2

private void SubscribeNotification(frm雜項單建立 f) { f.OnTrxStatusUpdated += new frm雜項單建立.TrxStatusUpdateHandler(async delegate () { try { while (!this.IsHandleCreated) {; } if (IsHandleCreated) grid雜項單列表.Invoke((MethodInvoker)UpdateGrid雜項單列表); } catch (Exception ex) { LogWriter.ShowErrMsg(ex); } }); }

範例3

public void Subscribe選擇物料(frm選擇出庫物料_數量 f)

{ frm選擇出庫物料_數量.OnItemSelected w = new frm選擇出庫物料_數量.OnItemSelected(delegate (StkOutMaterial[] m, String srcFormName) { if (!this.Text.Equals(srcFormName)) return; dataGridView1.Update(); }); f.mItemSelected += w;

}

2. 發動變異通知者 

範例1

public delegate void TrxStatusUpdateHandler() ;  

或傳值 public delegate void TrxStatusUpdateHandler(SECS s) ) 

static public event TrxStatusUpdateHandler OnTrxStatusUpdated;

if (OnTrxStatusUpdated != null)

 {   OnTrxStatusUpdated()  ;  }

 

3. 檢查cancel form

(按下確認前都須canceled=false)

按下取消前 都須canceled =false