/// <summary>
/// 获取指定月合计
/// </summary>
private void GetMonthTotal(DateTime date)
{
lblMonth.Content =
$"{date.Year}年{date.Month}月总收入{service.GetMonthTotalIn(date).ToString("#,0.00")}元，总支出{service.GetMonthTotalEx(date).ToString("#,0.00")}元";
}