.net扩展方法——日期转换
- ToString_yyyyMMdd：日期转换 yyyy-MM-dd
- ToString_yyyyMMddHHmmss：日期转换 yyyy-MM-dd HH:mm:ss
/// <summary> /// 日期转换 yyyy-MM-dd /// </summary> /// <param name="dcmal"></param> /// <param name="point"></param> /// <returns></returns> public static string ToString_yyyyMMdd(this DateTime? val) { if (val.HasValue) { return val.Value.ToString("yyyy-MM-dd"); } return ""; } /// <summary> /// 日期转换 yyyy-MM-dd HH:mm:ss /// </summary> /// <param name="dcmal"></param> /// <param name="point"></param> /// <returns></returns> public static string ToString_yyyyMMddHHmmss(this DateTime? val) { if (val.HasValue) { return val.Value.ToString("yyyy-MM-dd HH:mm:ss"); } return ""; } /// <summary> /// 日期转换 yyyy-MM-dd /// </summary> /// <param name="dcmal"></param> /// <param name="point"></param> /// <returns></returns> public static string ToString_yyyyMMdd(this DateTime val) { return val.ToString("yyyy-MM-dd"); } /// <summary> /// 日期转换 yyyy-MM-dd HH:mm:ss /// </summary> /// <param name="dcmal"></param> /// <param name="point"></param> /// <returns></returns> public static string ToString_yyyyMMddHHmmss(this DateTime val) { return val.ToString("yyyy-MM-dd HH:mm:ss"); }