代码如下：

1  /// 
 2         /// 格式化时间字符串 3         /// 
 4         ///  5         /// 
      6         private DateTime StrConvertDateToString(string strDate) 7         { 8             return (DateTime.ParseExact(strDate, "yyyyMMdd", System.Globalization.CultureInfo.CurrentCulture)); //day 9 10         }11         /// 
12         /// 格式化时间字符串13         /// 
14         /// 15         /// 
     16         private string StrDateConvertDateToString(string strDate)17         {18             return (DateTime.ParseExact(strDate, "yyyyMMdd", System.Globalization.CultureInfo.CurrentCulture)).ToString("yyyy-MM-dd"); //day19 20         }