DateTime sStartDate = DateTime.Parse(Convert.ToString(ViewState["StartDate"]));
string sEndDate1 = Convert.ToString(ViewState["EndDate"]);
DateTime sEndDate = DateTime.ParseExact(sEndDate1, "dd/MM/yyyy hh:mm:ss", CultureInfo.InvariantCulture);
在 DateTime sEndDate 之后,它显示异常:字符串未被识别为有效的日期时间