日期转换类

   1:   

   2:  // 创建日期: 2008-04-23

   3:  // 说    明: 日期，时间处理相关的类，大多转换为字符串。

   4:  using System;

   5:  using System.Collections.Generic;

   6:  using System.Text;

   7:   

   8:  namespace AnkeEdu.Tools

   9:  {

  10:      /// <summary>

  11:      /// 日期，时间处理

  12:      /// </summary>

  13:      public static class TimeHelper

  14:      {

  15:          /// <summary>

  16:          /// 返回当前时间的字符串表示 yyyy-MM-dd HH:mm:ss

  17:          /// </summary>

  18:          /// <returns>当前时间的字符串表示 yyyy-MM-dd HH:mm:ss</returns>

  19:          public static string GetNowStr()

  20:          {

  21:              return DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");

  22:          }

  23:   

  24:          #region GetTimeFlag 根据时间标记返回时间字符表示形式(一天分为48段,0-47)

  25:          /// <summary>

  26:          /// 获到时间标记

  27:          /// </summary>

  28:          /// <param name="flag">时间标记对象</param>

  29:          /// <returns>返回时间字符表示</returns>

  30:          public static string GetTimeFlag(object flag)

  31:          {

  32:              if (flag == null) return "";

  33:              int nflag = Convert.ToInt32(flag.ToString());

  34:              return GetTimeFlag(nflag);

  35:          }

  36:          /// <summary>

  37:          /// 根据时间标记返回时间字符表示形式

  38:          /// 一天分为48段

  39:          /// 0:00-0:30 为0

  40:          /// </summary>

  41:          /// <param name="flag">时间标记</param>

  42:          /// <returns>返回标记后的时间字符串</returns>

  43:          public static string GetTimeFlag(int flag)

  44:          {

  45:              int hh = flag / 2;

  46:              int mm = ((flag % 2) != 0) ? 30 : 0;

  47:              DateTime d = new DateTime(1, 1, 1, hh, mm, 0);

  48:   

  49:              return d.ToString("HH:mm-") + d.AddMinutes(30).ToString("HH:mm");

  50:          }

  51:          #endregion

  52:          #region GetTimeFlagStartTime 根据时间标记返回时间段开始时间表示形式(一天分为48段,0-47)

  53:          /// <summary>

  54:          /// 根据时间标记返回时间段开始时间表示形式

  55:          /// 一天分为48段

  56:          /// 0:00-0:30 为0

  57:          /// </summary>

  58:          /// <param name="flag">时间标记</param>

  59:          /// <returns>返回标记后的时间</returns>

  60:          public static DateTime GetTimeFlagStartTime(int flag)

  61:          {

  62:              int hh = flag / 2;

  63:              int mm = ((flag % 2) != 0) ? 30 : 0;

  64:              DateTime d = new DateTime(1, 1, 1, hh, mm, 0);

  65:              return d;

  66:          }

  67:          #endregion

  68:   

  69:          #region GetCnDate 格式化日期为 yyyy-MM-dd 星期一

  70:          /// <summary>

  71:          /// 获取中午日期名 格式化日期为 yyyy-MM-dd 星期一

  72:          /// </summary>

  73:          /// <param name="dt">日期</param>

  74:          /// <returns>格式化的中午日期</returns>

  75:          public static string GetCnDate(DateTime dt)

  76:          {

  77:              return dt.ToString("yyyy-MM-dd") + " " + GetCnWeek(dt);

  78:          }

  79:          #endregion

  80:          #region GetMonthStr 转换月份为英文格式

  81:          /// <summary>

  82:          /// 转换月份为英文格式

  83:          /// </summary>

  84:          /// <param name="month">月份</param>

  85:          /// <returns>英文月份</returns>

  86:          public static string GetMonthStr(int month)

  87:          {

  88:              switch (month)

  89:              {

  90:                  case 1: return "January";

  91:                  case 2: return "February";

  92:                  case 3: return "March";

  93:                  case 4: return "April";

  94:                  case 5: return "May";

  95:                  case 6: return "June";

  96:                  case 7: return "July";

  97:                  case 8: return "August";

  98:                  case 9: return "September";

  99:                  case 10: return "October";

 100:                  case 11: return "November";

 101:                  case 12: return "December";

 102:                  default: return "January";

 103:              }

 104:   

 105:          }

 106:          #endregion

 107:          #region FormatDate 格式化日期为yyyy-MM-dd

 108:          /// <summary>

 109:          /// 格式化日期为2006-12-22

 110:          /// </summary>

 111:          /// <param name="dTime">日期</param>

 112:          /// <returns>返回格式化后的日期字符串</returns>

 113:          public static string FormatDate(DateTime? dTime)

 114:          {

 115:              string rStr;

 116:              rStr = dTime.Value.Year + "-" + dTime.Value.Month + "-" + dTime.Value.Day;

 117:              return rStr;

 118:          }

 119:          /// <summary>

 120:          /// 格式化日期为2006-12-22

 121:          /// </summary>

 122:          /// <param name="dTime">日期</param>

 123:          /// <returns>返回格式化后的日期字符串</returns>

 124:          public static string FormatDateYMD(DateTime? dTime)

 125:          {

 126:              if (dTime == null) return "1970-01-01";

 127:   

 128:              return dTime.Value.ToString("yyyy-MM-dd");

 129:          }

 130:          #endregion

 131:          #region GetCnWeek 获取中文星期名

 132:          /// <summary>

 133:          /// 获取中文星期名

 134:          /// </summary>

 135:          /// <param name="d">传入的整数</param>

 136:          /// <returns>返回中文星期名</returns>

 137:          public static string GetCnWeek(int d)

 138:          {

 139:              string rStr = "";

 140:              switch (d)

 141:              {

 142:                  case 7:

 143:                      rStr = "星期日";

 144:                      break;

 145:                  case 1:

 146:                      rStr = "星期一";

 147:                      break;

 148:                  case 2:

 149:                      rStr = "星期二";

 150:                      break;

 151:                  case 3:

 152:                      rStr = "星期三";

 153:                      break;

 154:                  case 4:

 155:                      rStr = "星期四";

 156:                      break;

 157:                  case 5:

 158:                      rStr = "星期五";

 159:                      break;

 160:                  case 6:

 161:                      rStr = "星期六";

 162:                      break;

 163:              }

 164:              return rStr;

 165:          }

 166:          #endregion

 167:          #region GetCnWeek 获取中文星期名

 168:          /// <summary>

 169:          /// 获取中文星期名

 170:          /// </summary>

 171:          /// <param name="sDate">日期</param>

 172:          /// <returns>返回对应的中文星期名</returns>

 173:          public static string GetCnWeek(DateTime sDate)

 174:          {

 175:              string rStr = "";

 176:              switch (sDate.DayOfWeek)

 177:              {

 178:                  case DayOfWeek.Sunday:

 179:                      rStr = "星期日";

 180:                      break;

 181:                  case DayOfWeek.Monday:

 182:                      rStr = "星期一";

 183:                      break;

 184:                  case DayOfWeek.Tuesday:

 185:                      rStr = "星期二";

 186:                      break;

 187:                  case DayOfWeek.Wednesday:

 188:                      rStr = "星期三";

 189:                      break;

 190:                  case DayOfWeek.Thursday:

 191:                      rStr = "星期四";

 192:                      break;

 193:                  case DayOfWeek.Friday:

 194:                      rStr = "星期五";

 195:                      break;

 196:                  case DayOfWeek.Saturday:

 197:                      rStr = "星期六";

 198:                      break;

 199:              }

 200:              return rStr;

 201:          }

 202:          #endregion

 203:          #region GetEngWeek 获取英文星期名

 204:          /// <summary>

 205:          /// 获取英文星期名

 206:          /// </summary>

 207:          /// <param name="sDate">日期</param>

 208:          /// <returns>返回星期名</returns>

 209:          public static string GetEngWeek(DateTime sDate)

 210:          {

 211:              string rStr = "";

 212:              switch (sDate.DayOfWeek)

 213:              {

 214:                  case DayOfWeek.Sunday:

 215:                      rStr = "Sunday";

 216:                      break;

 217:                  case DayOfWeek.Monday:

 218:                      rStr = "Monday";

 219:                      break;

 220:                  case DayOfWeek.Tuesday:

 221:                      rStr = "Tuesday";

 222:                      break;

 223:                  case DayOfWeek.Wednesday:

 224:                      rStr = "Wednesday";

 225:                      break;

 226:                  case DayOfWeek.Thursday:

 227:                      rStr = "Thursday";

 228:                      break;

 229:                  case DayOfWeek.Friday:

 230:                      rStr = "Friday";

 231:                      break;

 232:                  case DayOfWeek.Saturday:

 233:                      rStr = "Saturday";

 234:                      break;

 235:              }

 236:              return rStr;

 237:          }

 238:          #endregion

 239:          #region GetCnWeek 获取DayOfWeek

 240:          /// <summary>

 241:          /// 获取DayOfWeek

 242:          /// </summary>

 243:          /// <param name="sDate">日期</param>

 244:          /// <returns>返回星期名称对应的整数</returns>

 245:          public static int GetDayOfWeek(DateTime sDate)

 246:          {

 247:              int dayOfWeek = 0;

 248:              switch (sDate.DayOfWeek)

 249:              {

 250:                  case DayOfWeek.Sunday:

 251:                      dayOfWeek = 0;

 252:                      break;

 253:                  case DayOfWeek.Monday:

 254:                      dayOfWeek = 1;

 255:                      break;

 256:                  case DayOfWeek.Tuesday:

 257:                      dayOfWeek = 2;

 258:                      break;

 259:                  case DayOfWeek.Wednesday:

 260:                      dayOfWeek = 3;

 261:                      break;

 262:                  case DayOfWeek.Thursday:

 263:                      dayOfWeek = 4;

 264:                      break;

 265:                  case DayOfWeek.Friday:

 266:                      dayOfWeek = 5;

 267:                      break;

 268:                  case DayOfWeek.Saturday:

 269:                      dayOfWeek = 6;

 270:                      break;

 271:              }

 272:              return dayOfWeek;

 273:          }

 274:          #endregion

 275:          #region GetDataTimeStr 获取字符串格式的日期时间 yyyy-MM-dd HH:mm:ss

 276:          /// <summary>

 277:          /// 获取字符串格式的日期时间 yyyy-MM-dd HH:mm:ss

 278:          /// </summary>

 279:          /// <param name="dateTime">要格式的时间</param>

 280:          /// <returns>返回格式化后的时间字符串</returns>

 281:          public static string GetDataTimeStr(DateTime dateTime)

 282:          {

 283:              return dateTime.ToString("yyyy-MM-dd HH:mm:ss");

 284:          }

 285:          #endregion

 286:          #region GetDataStr 获取字符串格式的日期 yyyy-MM-dd

 287:          /// <summary>

 288:          /// 获取字符串格式的日期 yyyy-MM-dd

 289:          /// </summary>

 290:          /// <param name="dateTime">要格式的日期</param>

 291:          /// <returns>返回格式化后的时间字符串</returns>

 292:          public static string GetDataStr(DateTime dateTime)

 293:          {

 294:              return dateTime.ToString("yyyy-MM-dd");

 295:          }

 296:          #endregion

 297:          #region GetDateFormString 从一个字符串类型配合日期模板获取表示的日期

 298:          /// <summary>

 299:          /// 系统空值时间

 300:          /// </summary>

 301:          static public readonly DateTime SYS_NULL_TIME = new DateTime(1000, 1, 1);

 302:          /// <summary>

 303:          /// 从一个字符串类型配合日期模板获取表示的日期

 304:          /// </summary>

 305:          /// <param name="strDate">字符串表示的日期</param>

 306:          /// <param name="dateFormat">日期格式</param>        

 307:          /// <returns>返回的日期(如果异常返回默认值)</returns>

 308:          public static DateTime GetDateFormString(string strDate, string dateFormat)

 309:          {

 310:              if (string.IsNullOrEmpty(strDate))

 311:              {

 312:                  return SYS_NULL_TIME;

 313:              }

 314:   

 315:              try

 316:              {

 317:                  int year = GetDateIntFormString(dateFormat, strDate, ‘y‘);

 318:                  int month = GetDateIntFormString(dateFormat, strDate, ‘M‘);

 319:                  int day = GetDateIntFormString(dateFormat, strDate, ‘d‘);

 320:   

 321:                  return new DateTime(year, month, day);

 322:              }

 323:              catch

 324:              {

 325:                  return new DateTime();

 326:              }

 327:          }

 328:          /// <summary>

 329:          /// 从日期中获取日期

 330:          /// </summary>

 331:          /// <param name="dateForamt">时间格式</param>

 332:          /// <param name="dateStr">字符串日期</param>

 333:          /// <param name="ch">字符串类型:‘y’,‘m‘,‘d‘</param>

 334:          /// <returns>返回格式化后的整数</returns>

 335:          private static int GetDateIntFormString(string dateForamt, string dateStr, char ch)

 336:          {

 337:              //模板可能是变动的，从模板根据最后的ch值确定表示时间的区间

 338:              int indStart = dateForamt.IndexOf(ch);

 339:              int indEnd = dateForamt.LastIndexOf(ch);

 340:              if (dateStr.Length < indStart + 1)

 341:              {

 342:                  return 1;

 343:              }

 344:   

 345:              string tmpStr = "";

 346:   

 347:              if (dateStr.Length < indEnd + 1)

 348:              {

 349:                  tmpStr = dateStr.Substring(indStart);

 350:              }

 351:              else

 352:              {

 353:                  tmpStr = dateStr.Substring(indStart, indEnd - indStart + 1);

 354:              }

 355:   

 356:              return int.Parse(tmpStr);

 357:          }

 358:          #endregion

 359:   

 360:          #region ConvertDateStrToDateTime 转换一个字符串(yyyy-MM-dd)为时间格式

 361:          /// <summary>

 362:          /// 转换一个字符串(yyyy-MM-dd)为时间格式

 363:          /// </summary>

 364:          /// <param name="yyyy_MM_dd">年月日，应为yyyy-MM-dd</param>

 365:          /// <returns>返回转换后的时间格式</returns>

 366:          public static DateTime ConvertDateStrToDateTime(string yyyy_MM_dd)

 367:          {

 368:              return ConvertDateTimeStrToDateTime(yyyy_MM_dd, "00:00:00");

 369:          }

 370:          #endregion

 371:          #region ConvertDateTimeStrToDateTime 转换一个字符串(yyyy-MM-dd HH:mm:ss)为时间格式

 372:          /// <summary>

 373:          /// 转换一个字符串(yyyy-MM-dd HH:mm:ss)为时间格式

 374:          /// </summary>

 375:          /// <param name="yyyy_MM_dd">年月日，应为yyyy-MM-dd</param>

 376:          /// <param name="hh_mm_ss">时分秒，应为hh:mm:ss</param>

 377:          /// <returns>返回转换后的时间格式</returns>

 378:          public static DateTime ConvertDateTimeStrToDateTime(string yyyy_MM_dd, string hh_mm_ss)

 379:          {

 380:              if (yyyy_MM_dd.Length != 10 || hh_mm_ss.Length != 8)

 381:              {

 382:                  return new DateTime();

 383:              }

 384:              string[] datestr = yyyy_MM_dd.Split(‘-‘);

 385:              string[] timestr = hh_mm_ss.Split(‘:‘);

 386:   

 387:              return new DateTime(Int32.Parse(datestr[0]),

 388:                  Int32.Parse(datestr[1]),

 389:                  Int32.Parse(datestr[2]),

 390:                  Int32.Parse(timestr[0]),

 391:                  Int32.Parse(timestr[1]),

 392:                  Int32.Parse(timestr[2])

 393:                  );

 394:          }

 395:          #endregion

 396:   

 397:          #region FormatTimeByMillisecond 格式化毫秒时间长度为友好时间长度

 398:          /// <summary>

 399:          /// 格式化毫秒时间长度为友好时间长度

 400:          /// </summary>

 401:          /// <param name="pMillisecond">要格式化的毫秒</param>

 402:          /// <returns>天,小时,分,秒等</returns>

 403:          public static string FormatTimeByMillisecond(long pMillisecond)

 404:          {

 405:              StringBuilder builder = new StringBuilder();

 406:              pMillisecond = int.Parse(string.Format("{0:F0}", pMillisecond / 0x3e8L));

 407:              if (pMillisecond >= 0x15180L)

 408:              {

 409:                  builder.Append(string.Format("{0:F0}", pMillisecond / 0x15180L));

 410:                  builder.Append("天");

 411:                  pMillisecond = pMillisecond % 0x15180L;

 412:              }

 413:              if ((pMillisecond > 0xe10L) || (pMillisecond == 0L))

 414:              {

 415:                  builder.Append(string.Format("{0:F0}", pMillisecond / 0xe10L));

 416:                  builder.Append("小时");

 417:                  pMillisecond = pMillisecond % 0xe10L;

 418:              }

 419:              if ((pMillisecond > 60L) || (pMillisecond == 0L))

 420:              {

 421:                  builder.Append(string.Format("{0:F0}", pMillisecond / 60L));

 422:                  builder.Append("分");

 423:                  pMillisecond = pMillisecond % 60L;

 424:              }

 425:              if (pMillisecond < 60L)

 426:              {

 427:                  builder.Append(pMillisecond.ToString());

 428:                  builder.Append("秒");

 429:              }

 430:              return builder.ToString();

 431:          }

 432:          #endregion

 433:   

 434:          #region GetTwoDateSeconds 获得d1和d2之间的时间秒数

 435:          /// <summary>

 436:          /// 获得d1和d2之间的时间秒数

 437:          /// </summary>

 438:          /// <param name="d1">时间前</param>

 439:          /// <param name="d2">时间后</param>

 440:          /// <returns>返回d1和d2之间的时间秒数</returns>

 441:          public static long GetTwoDateSeconds(DateTime d1, DateTime d2)

 442:          {

 443:              TimeSpan ts = d2.Subtract(d1).Duration();

 444:              return Convert.ToInt64(ts.TotalSeconds);

 445:          }

 446:          #endregion

 447:   

 448:          

 449:   

 450:      }

 451:  }