/// <summary>
/// 开始统计
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void caculate_Click(object sender, EventArgs e)
{
this.dataGridView.DataSource = VehicleDao.CaculateTaxReport(this.startDate.Value.Date.AddMilliseconds(-1), this.endDate.Value.Date.AddDays(1).AddMilliseconds(-1)).Tables[0];
}