silverlight - 使用外部控件自定义 Silverlight Dataform 的命令

Question

我正在尝试处理来自 datafrom 外部的内部添加/删除/编辑命令表单按钮控件的数据。我正在使用 MVVMLight。例如：要在删除按钮 EventToCommand 中删除，我 Bind Command="{Binding DeleteCurrentItemInDataform, Mode=TwoWay}" CommandParameter="{Binding CurrentItem, ElementName=Dataform1}"

在 ViewModel 代码中：

   DeleteCurrentItemInDataform=new RelayCommand<DataForm>(e=>{ e.DeletingItem+=new EventHandler<CancelEventArgs>(DeletingCurrentItem); });

---

private void DeletingCurrentItem(object sender, CancelEventArgs e){ 
Cash cd = sender as Cash;
_DataContext.CashDrawers.Remove(cd);
_DataContext.SubmitChanges((op) => {  if (op.HasError)  {MssageBox.Show(op.Error.Message); } else{ MessageBox.Show(cd.CashName + " is deleted."); }    }, null); }

---

private RelayCommand<DataForm> _deleteCurrentItemInDataform;
    public RelayCommand<DataForm> DeleteCurrentItemInDataform
    {
        get { return _deleteCurrentItemInDataform; }
        set
        {
            if (_deleteCurrentItemInDataform != value)
            {
                _deleteCurrentItemInDataform = value;
                RaisePropertyChanged("DeleteCurrentItemInDataform");
            } 
        }

}

Answer 1

我发现使用后面的代码非常简单：例如编辑，只需要执行 > Datafrom1.BeginEdit();