asp.net(C#)实现功能强大的时间日期处理类完整实例

作者：smartsmile2012 字体：[增加 减小] 类型：转载 时间：2016-06-30我要评论

这篇文章主要介绍了asp.net(C#)实现功能强大的时间日期处理类,封装了针对日期与时间的各种常用的判断与计算功能,非常方便实用,需要的朋友可以参考下

 

本文实例讲述了asp.net(C#)实现功能强大的时间日期处理类。分享给大家供大家参考，具体如下：

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using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; namespace MSCL {   /// <summary>   /// 时间日期处理类   /// </summary>   public class DateTimeHelper   {     #region 返回本年有多少天     /// <summary>返回本年有多少天</summary>     /// <param name="iYear">年份</param>     /// <returns>本年的天数</returns>     public static int GetDaysOfYear(int iYear)     {       int cnt = 0;       if (IsRuYear(iYear))       {         //闰年多 1 天 即：2 月为 29 天         cnt = 366;       }       else       {         //--非闰年少1天 即：2 月为 28 天         cnt = 365;       }       return cnt;     }     #endregion     #region 返回本年有多少天     /// <summary>本年有多少天</summary>     /// <param name="dt">日期</param>     /// <returns>本天在当年的天数</returns>     public static int GetDaysOfYear(DateTime idt)     {       int n;       //取得传入参数的年份部分，用来判断是否是闰年       n = idt.Year;       if (IsRuYear(n))       {         //闰年多 1 天 即：2 月为 29 天         return 366;       }       else       {         //--非闰年少1天 即：2 月为 28 天         return 365;       }     }     #endregion     #region 返回本月有多少天     /// <summary>本月有多少天</summary>     /// <param name="iYear">年</param>     /// <param name="Month">月</param>     /// <returns>天数</returns>     public static int GetDaysOfMonth(int iYear, int Month)     {       int days = 0;       switch (Month)       {         case 1:           days = 31;           break;         case 2:           if (IsRuYear(iYear))           {             //闰年多 1 天 即：2 月为 29 天             days = 29;           }           else           {             //--非闰年少1天 即：2 月为 28 天             days = 28;           }           break;         case 3:           days = 31;           break;         case 4:           days = 30;           break;         case 5:           days = 31;           break;         case 6:           days = 30;           break;         case 7:           days = 31;           break;         case 8:           days = 31;           break;         case 9:           days = 30;           break;         case 10:           days = 31;           break;         case 11:           days = 30;           break;         case 12:           days = 31;           break;       }       return days;     }     #endregion     #region 返回本月有多少天     /// <summary>本月有多少天</summary>     /// <param name="dt">日期</param>     /// <returns>天数</returns>     public static int GetDaysOfMonth(DateTime dt)     {       //--------------------------------//       //--从dt中取得当前的年，月信息 --//       //--------------------------------//       int year, month, days = 0;       year = dt.Year;       month = dt.Month;       //--利用年月信息，得到当前月的天数信息。       switch (month)       {         case 1:           days = 31;           break;         case 2:           if (IsRuYear(year))           {             //闰年多 1 天 即：2 月为 29 天             days = 29;           }           else           {             //--非闰年少1天 即：2 月为 28 天             days = 28;           }           break;         case 3:           days = 31;           break;         case 4:           days = 30;           break;         case 5:           days = 31;           break;         case 6:           days = 30;           break;         case 7:           days = 31;           break;         case 8:           days = 31;           break;         case 9:           days = 30;           break;         case 10:           days = 31;           break;         case 11:           days = 30;           break;         case 12:           days = 31;           break;       }       return days;     }     #endregion     #region 返回当前日期的星期名称     /// <summary>返回当前日期的星期名称</summary>     /// <param name="dt">日期</param>     /// <returns>星期名称</returns>     public static string GetWeekNameOfDay(DateTime idt)     {       string dt, week = "";       dt = idt.DayOfWeek.ToString();       switch (dt)       {         case "Mondy":           week = "星期一";           break;         case "Tuesday":           week = "星期二";           break;         case "Wednesday":           week = "星期三";           break;         case "Thursday":           week = "星期四";           break;         case "Friday":           week = "星期五";           break;         case "Saturday":           week = "星期六";           break;         case "Sunday":           week = "星期日";           break;       }       return week;     }     #endregion     #region 返回当前日期的星期编号     /// <summary>返回当前日期的星期编号</summary>     /// <param name="dt">日期</param>     /// <returns>星期数字编号</returns>     public static string GetWeekNumberOfDay(DateTime idt)     {       string dt, week = "";       dt = idt.DayOfWeek.ToString();       switch (dt)       {         case "Mondy":           week = "1";           break;         case "Tuesday":           week = "2";           break;         case "Wednesday":           week = "3";           break;         case "Thursday":           week = "4";           break;         case "Friday":           week = "5";           break;         case "Saturday":           week = "6";           break;         case "Sunday":           week = "7";           break;       }       return week;     }     #endregion     #region 判断当前日期所属的年份是否是闰年，私有函数     /// <summary>判断当前日期所属的年份是否是闰年，私有函数</summary>     /// <param name="dt">日期</param>     /// <returns>是闰年：True ，不是闰年：False</returns>     private static bool IsRuYear(DateTime idt)     {       //形式参数为日期类型       //例如：2003-12-12       int n;       n = idt.Year;       if ((n % 400 == 0) || (n % 4 == 0 && n % 100 != 0))       {         return true;       }       else       {         return false;       }     }     #endregion     #region 判断当前年份是否是闰年，私有函数     /// <summary>判断当前年份是否是闰年，私有函数</summary>     /// <param name="dt">年份</param>     /// <returns>是闰年：True ，不是闰年：False</returns>     private static bool IsRuYear(int iYear)     {       //形式参数为年份       //例如：2003       int n;       n = iYear;       if ((n % 400 == 0) || (n % 4 == 0 && n % 100 != 0))       {         return true;       }       else       {         return false;       }     }     #endregion     #region 将输入的字符串转化为日期。如果字符串的格式非法，则返回当前日期     /// <summary>     /// 将输入的字符串转化为日期。如果字符串的格式非法，则返回当前日期。     /// </summary>     /// <param name="strInput">输入字符串</param>     /// <returns>日期对象</returns>     public static DateTime ConvertStringToDate(string strInput)     {       DateTime oDateTime;       try       {         oDateTime = DateTime.Parse(strInput);       }       catch (Exception)       {         oDateTime = DateTime.Today;       }       return oDateTime;     }     #endregion     #region 将日期对象转化为格式字符串     /// <summary>     /// 将日期对象转化为格式字符串     /// </summary>     /// <param name="oDateTime">日期对象</param>     /// <param name="strFormat">     /// 格式：     ///    "SHORTDATE"===短日期     ///    "LONGDATE"==长日期     ///    其它====自定义格式     /// </param>     /// <returns>日期字符串</returns>     public static string ConvertDateToString(DateTime oDateTime, string strFormat)     {       string strDate = "";       try       {         switch (strFormat.ToUpper())         {           case "SHORTDATE":             strDate = oDateTime.ToShortDateString();             break;           case "LONGDATE":             strDate = oDateTime.ToLongDateString();             break;           default:             strDate = oDateTime.ToString(strFormat);             break;         }       }       catch (Exception)       {         strDate = oDateTime.ToShortDateString();       }       return strDate;     }     #endregion     #region 判断是否为合法日期，必须大于1800年1月1日     /// <summary>     /// 判断是否为合法日期，必须大于1800年1月1日     /// </summary>     /// <param name="strDate">输入日期字符串</param>     /// <returns>True/False</returns>     public static bool IsDateTime(string strDate)     {       try       {         DateTime oDate = DateTime.Parse(strDate);         if (oDate.CompareTo(DateTime.Parse("1800-1-1")) > 0)           return true;         else           return false;       }       catch (Exception)       {         return false;       }     }     #endregion     #region 获取两个日期之间的差值 可返回年 月 日 小时 分钟 秒     /// <summary>     /// 获取两个日期之间的差值     /// </summary>     /// <param name="howtocompare">比较的方式可为：year month day hour minute second</param>     /// <param name="startDate">开始日期</param>     /// <param name="endDate">结束日期</param>     /// <returns>时间差</returns>     public static double DateDiff(string howtocompare, DateTime startDate, DateTime endDate)     {       double diff = 0;       try       {         TimeSpan TS = new TimeSpan(endDate.Ticks - startDate.Ticks);         switch (howtocompare.ToLower())         {           case "year":             diff = Convert.ToDouble(TS.TotalDays / 365);             break;           case "month":             diff = Convert.ToDouble((TS.TotalDays / 365) * 12);             break;           case "day":             diff = Convert.ToDouble(TS.TotalDays);             break;           case "hour":             diff = Convert.ToDouble(TS.TotalHours);             break;           case "minute":             diff = Convert.ToDouble(TS.TotalMinutes);             break;           case "second":             diff = Convert.ToDouble(TS.TotalSeconds);             break;         }       }       catch (Exception)       {         diff = 0;       }       return diff;     }     #endregion     #region 计算两个日期之间相差的工作日天数     /// <summary>     /// 计算两个日期之间相差的工作日天数     /// </summary>     /// <param name="dtStart">开始日期</param>     /// <param name="dtEnd">结束日期</param>     /// <param name="Flag">是否除去周六，周日</param>     /// <returns>Int</returns>     public static int CalculateWorkingDays(DateTime dtStart, DateTime dtEnd, bool Flag)     {       int count = 0;       for (DateTime dtTemp = dtStart; dtTemp < dtEnd; dtTemp = dtTemp.AddDays(1))       {         if (Flag)         {           if (dtTemp.DayOfWeek != DayOfWeek.Saturday && dtTemp.DayOfWeek != DayOfWeek.Sunday)           {             count++;           }         }         else         {           count++;         }       }       return count;     }     #endregion   } }