public ItemForm(
     CategoryDataSet dsCategory
     )
 {
     InitializeComponent();
     categoryDataSet.Merge(dsCategory);
 }
 public ItemForm(CategoryDataSet dsCategory,
                 DateTime nowDate,
                 string category,
                 string item,
                 int money,
                 string remarks)
 {
     InitializeComponent(); //初期化処理
     categoryDataSet.Merge(dsCategory);
     monCalendar.SetDate(nowDate);
     cmbCategory.Text = category;
     txtItem.Text     = item;
     mtxtMoney.Text   = money.ToString();
     txtRemarks.Text  = remarks;
 }