/// <summary>
/// 统计一天的采购单据数
/// </summary>
private async Task Process()
{
var maxTime = (await _reportBll.GetStatisticsPurchaseCountMaxTime()).Date;
while (maxTime < _startTime)
{
Execution().Wait();
_endTime = _startTime.AddSeconds(-1);
_startTime = _startTime.AddDays(-1);
}
}