public GameStoreViewModel(IDispatcherService dispatcherService, string functionTag,
IDialogService dialogService, ScoreInfoService scoreInfoService, GoodsService goodsService) : base(dispatcherService, functionTag)
{
_dialogService = dialogService;
_scoreInfoService = scoreInfoService;
_goodsService = goodsService;
DataGridItemChanged = new RelayCommand <DataGridItemChangedEventArgs>(OnDataGridItemChanged);
RefreshList = new RelayCommand(PrivateRefreshList);
RemoveItem = new RelayCommand(() =>
{
if (_dialogService.ShowOKCancel("确定删除选中数据吗？"))
{
_ = _goodsService.RemoveAsync(SelectedItem);
GoodsItems.Remove(SelectedItem);
}
}, () => { return(SelectedItem != null); });
RemoveAll = new RelayCommand(() =>
{
if (_dialogService.ShowOKCancel("确定删除所有数据吗？"))
{
_ = _goodsService.RemoveAllAsync();
GoodsItems = null;
}
}, () => { return(GoodsItems != null); });
AddData = new RelayCommand(() =>
{
if (string.IsNullOrEmpty(BuyCmd))
{
_dialogService.ShowInformation("购买命令不能为空");
return;
}
if (GoodsItems.FirstOrDefault(p => p.BuyCmd == BuyCmd) != null)
{
_dialogService.ShowInformation("购买命令重复");
return;
}
var dto = new GoodsDto()
{
GoodsName = GoodsName,
BuyCmd = BuyCmd,
Content = Content,
Amount = Amount,
Quality = Quality,
Price = Price,
GoodsType = GoodsType
};
_ = _goodsService.AddAsync(dto);
GoodsItems.Add(dto);
});
AddAvailableVariables();
PrivateRefreshList();
}
private void OnDataGridItemChanged(DataGridItemChangedEventArgs eventArgs)
{
if (eventArgs.IsChanged == false)
{
return;
}
if (eventArgs.NewItem is GoodsDto newItem && eventArgs.OldItem is GoodsDto oldItem)
{
if (GoodsItems.FirstOrDefault(p => p.BuyCmd == newItem.BuyCmd && object.Equals(p, newItem) == false) != null)
{
_dialogService.ShowInformation("购买命令重复");
newItem.BuyCmd = oldItem.BuyCmd;// 此时新值还未更新至ui
}
else
{
_ = _goodsService.UpdateAsync(newItem);
}
}
}