/// <summary>
/// 统计按钮点击
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void caculate_Click(object sender, EventArgs e)
{
this.dataGridView.DataSource = VehicleDao.CaculateTradeYearReport(this.startDate.Value.Date.AddMonths(1 - this.startDate.Value.Month).AddDays(1 - this.startDate.Value.Date.Day).AddMilliseconds(-1),
this.endDate.Value.Date.AddYears(1).AddMonths(1 - this.startDate.Value.Month).AddDays(1 - this.endDate.Value.Date.Day).AddMilliseconds(-1)).Tables[0];
}