c# 疑难杂点总计

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#region 检测Excel导入的日期列,防止转换出错 不确定传进来的是duble还是datime

                    DateTime taskplanStartDate;

                    DateTime taskplanEndDate;

                    double typeValue;

 

                    if (double.TryParse(planStartDate, out typeValue))

                    {

                        taskplanStartDate = DateTime.FromOADate(Convert.ToDouble(planStartDate));

                    }

                    else

                    {

                        taskplanStartDate = Convert.ToDateTime(planStartDate);

                    }

 

                    if (double.TryParse(planEndDate, out typeValue))

                    {

                        taskplanEndDate = DateTime.FromOADate(Convert.ToDouble(planEndDate));

                    }

                    else

                    {

                        taskplanEndDate = Convert.ToDateTime(planEndDate);

                    }

#endregion