区别页面刷新还是提交

 

//如果刷新IsRefresh ＝ true                            
  private bool _isRefresh;
  private bool _refreshState;
  public bool IsRefresh
  {
   get
   {
    return _isRefresh;
   }
  }

 
  protected override void LoadViewState(object savedState)
  {
   object[] allStates = (object[]) savedState;
   base.LoadViewState(allStates[0]);
   _refreshState = (bool) allStates[1];
   _isRefresh = _refreshState == (bool) Session["__ISREFRESH"];
  }

  protected override object SaveViewState()
  {
   Session["__ISREFRESH"] = _refreshState;
   object[] allStates = new object[2];
   allStates[0] = base.SaveViewState();
   allStates[1] = !_refreshState;
   return allStates;
  }