aps.net中几个常用的时间计算
1 /// <summary>
2 /// 获取周的数据信息
3 /// </summary>
4 /// <param name="argTime">为当前时间</param>
5 private void GetWeekData(string argTime)
6 {
7 DateTime _thisTime = Convert.ToDateTime(argTime);
8 DateTime dtWeekStart = new DateTime();
9 DateTime dtWeekeEnd = new DateTime();
10 DateTimeUtils.GetWeek(_thisTime.Year, DateTimeUtils.WeekOfYear(_thisTime), out dtWeekStart, out dtWeekeEnd);
11
12 int start = dtWeekStart.Day;
13 int end = dtWeekeEnd.Day;
14 DataTable _thisTable = CreateWhereTable();
15
16 TimeSpan ts = dtWeekeEnd.Subtract(dtWeekStart);
17
18 int j = ts.Days;
19 for (int i = ts.Days; i >= 0; i--)
20 {
21 DateTime _thisMyTime = dtWeekStart.AddDays(j);
22 _thisTable = CreateWhereTableRow(_thisTable, _thisMyTime.ToString("yyyy-MM-dd"), "Week");
23 j -= 1;
24 }
25
26 string _thisTempTime = _thisTime.ToString("yyyy-MM-dd");
27 DataRow _thisRow = _thisTable.NewRow();
28 foreach (DataRow _row in _thisTable.Rows)
29 {
30 if (_row["Date"].ToString().Trim().Equals(_thisTempTime))
31 {
32 _thisRow["Date"] = _row["Date"];
33 _thisRow["Class"] = _row["Class"];
34 _thisTable.Rows.Remove(_row);
35 _thisTable.Rows.InsertAt(_thisRow, 0);
36 break;
37 }
38 }
39 //_thisTable 为当前一周内所有日期（当然这一周是以星期日开始）
40 GetData(_thisTable);//这里则根据一周信息绑定相应数据方法。
41
42 }
43
44
45 /// <summary>
46 /// 获取月数据
47 /// </summary>
48 /// <param name="argDate"></param>
49 private void GetMonthDate(string argDate)
50 {
51 DataTable _thisTable = CreateWhereTable();
52 DateTime _thisTime = DateTimeUtils.FirstDayOfMonth(Convert.ToDateTime(argDate));//获取月的第一天
53 DateTime _thisEndTime = DateTimeUtils.LastDayOfMonth(Convert.ToDateTime(argDate));//获取月的最后一天
54 int FirstDay = DateTimeUtils.FirstDayOfMonth(Convert.ToDateTime(argDate)).Day;//获取月第一天的天数
55 int LastDay = DateTimeUtils.LastDayOfMonth(Convert.ToDateTime(argDate)).Day;//获取月最后一天的天数
56 _thisTable = CreateWhereTableRow(_thisTable, _thisEndTime.ToString(), "Month");
57
58 for (int i = FirstDay; i < LastDay; i++)
59 {
60 _thisTable = CreateWhereTableRow(_thisTable, _thisEndTime.AddDays(-i).ToString("yyyy-MM-dd"), "Month");
61 }
62
63 string _thisTempTime = Convert.ToDateTime(argDate).ToString("yyyy-MM-dd");
64 DataRow _thisRow = _thisTable.NewRow();
65 foreach (DataRow _row in _thisTable.Rows)
66 {
67 if (_row["Date"].ToString().Trim().Equals(_thisTempTime))
68 {
69 _thisRow["Date"] = _row["Date"];
70 _thisRow["Class"] = _row["Class"];
71 _thisTable.Rows.Remove(_row);
72 _thisTable.Rows.InsertAt(_thisRow, 0);
73 break;
74 }
75 }
76
77 GetData(_thisTable);
78 }
79
80
81 //获取年的数据
82 private void GetYearDate(string argDate)
83 {
84 DateTime _thisDt = Convert.ToDateTime(argDate);
85 DataTable _thisTable = CreateWhereTable();
86 int year = _thisDt.Year;
87
88 string _thisStrDate = string.Empty;
89 for (int i = 12; i > 0; i--)
90 {
91 _thisStrDate = year + "-" + i + "-01";
92 _thisTable = CreateWhereTableRow(_thisTable, Convert.ToDateTime(_thisStrDate).ToString("yyyy-MM-dd"), "Year");
93 }
94
95 string _thisYear = _thisDt.Year.ToString();
96 string _thisMonth = _thisDt.Month.ToString();
97 //下面操作是将当前时间放到第一 其他时间顺便不改变
98 string strFYear = Convert.ToDateTime(_thisYear + "-" + _thisMonth + "-01").ToString("yyyy-MM-dd");
99
100 DataRow _thisRow = _thisTable.NewRow();
101 foreach (DataRow _row in _thisTable.Rows)
102 {
103 if (_row["Date"].ToString().Trim().Equals(strFYear))
104 {
105 _thisRow["Date"] = _row["Date"];
106 _thisRow["Class"] = _row["Class"];
107 _thisTable.Rows.Remove(_row);
108 _thisTable.Rows.InsertAt(_thisRow, 0);
109 break;
110 }
111 }
112
113 GetData(_thisTable);
114 }
115
116
117
118
119
2 /// 获取周的数据信息
3 /// </summary>
4 /// <param name="argTime">为当前时间</param>
5 private void GetWeekData(string argTime)
6 {
7 DateTime _thisTime = Convert.ToDateTime(argTime);
8 DateTime dtWeekStart = new DateTime();
9 DateTime dtWeekeEnd = new DateTime();
10 DateTimeUtils.GetWeek(_thisTime.Year, DateTimeUtils.WeekOfYear(_thisTime), out dtWeekStart, out dtWeekeEnd);
11
12 int start = dtWeekStart.Day;
13 int end = dtWeekeEnd.Day;
14 DataTable _thisTable = CreateWhereTable();
15
16 TimeSpan ts = dtWeekeEnd.Subtract(dtWeekStart);
17
18 int j = ts.Days;
19 for (int i = ts.Days; i >= 0; i--)
20 {
21 DateTime _thisMyTime = dtWeekStart.AddDays(j);
22 _thisTable = CreateWhereTableRow(_thisTable, _thisMyTime.ToString("yyyy-MM-dd"), "Week");
23 j -= 1;
24 }
25
26 string _thisTempTime = _thisTime.ToString("yyyy-MM-dd");
27 DataRow _thisRow = _thisTable.NewRow();
28 foreach (DataRow _row in _thisTable.Rows)
29 {
30 if (_row["Date"].ToString().Trim().Equals(_thisTempTime))
31 {
32 _thisRow["Date"] = _row["Date"];
33 _thisRow["Class"] = _row["Class"];
34 _thisTable.Rows.Remove(_row);
35 _thisTable.Rows.InsertAt(_thisRow, 0);
36 break;
37 }
38 }
39 //_thisTable 为当前一周内所有日期（当然这一周是以星期日开始）
40 GetData(_thisTable);//这里则根据一周信息绑定相应数据方法。
41
42 }
43
44
45 /// <summary>
46 /// 获取月数据
47 /// </summary>
48 /// <param name="argDate"></param>
49 private void GetMonthDate(string argDate)
50 {
51 DataTable _thisTable = CreateWhereTable();
52 DateTime _thisTime = DateTimeUtils.FirstDayOfMonth(Convert.ToDateTime(argDate));//获取月的第一天
53 DateTime _thisEndTime = DateTimeUtils.LastDayOfMonth(Convert.ToDateTime(argDate));//获取月的最后一天
54 int FirstDay = DateTimeUtils.FirstDayOfMonth(Convert.ToDateTime(argDate)).Day;//获取月第一天的天数
55 int LastDay = DateTimeUtils.LastDayOfMonth(Convert.ToDateTime(argDate)).Day;//获取月最后一天的天数
56 _thisTable = CreateWhereTableRow(_thisTable, _thisEndTime.ToString(), "Month");
57
58 for (int i = FirstDay; i < LastDay; i++)
59 {
60 _thisTable = CreateWhereTableRow(_thisTable, _thisEndTime.AddDays(-i).ToString("yyyy-MM-dd"), "Month");
61 }
62
63 string _thisTempTime = Convert.ToDateTime(argDate).ToString("yyyy-MM-dd");
64 DataRow _thisRow = _thisTable.NewRow();
65 foreach (DataRow _row in _thisTable.Rows)
66 {
67 if (_row["Date"].ToString().Trim().Equals(_thisTempTime))
68 {
69 _thisRow["Date"] = _row["Date"];
70 _thisRow["Class"] = _row["Class"];
71 _thisTable.Rows.Remove(_row);
72 _thisTable.Rows.InsertAt(_thisRow, 0);
73 break;
74 }
75 }
76
77 GetData(_thisTable);
78 }
79
80
81 //获取年的数据
82 private void GetYearDate(string argDate)
83 {
84 DateTime _thisDt = Convert.ToDateTime(argDate);
85 DataTable _thisTable = CreateWhereTable();
86 int year = _thisDt.Year;
87
88 string _thisStrDate = string.Empty;
89 for (int i = 12; i > 0; i--)
90 {
91 _thisStrDate = year + "-" + i + "-01";
92 _thisTable = CreateWhereTableRow(_thisTable, Convert.ToDateTime(_thisStrDate).ToString("yyyy-MM-dd"), "Year");
93 }
94
95 string _thisYear = _thisDt.Year.ToString();
96 string _thisMonth = _thisDt.Month.ToString();
97 //下面操作是将当前时间放到第一 其他时间顺便不改变
98 string strFYear = Convert.ToDateTime(_thisYear + "-" + _thisMonth + "-01").ToString("yyyy-MM-dd");
99
100 DataRow _thisRow = _thisTable.NewRow();
101 foreach (DataRow _row in _thisTable.Rows)
102 {
103 if (_row["Date"].ToString().Trim().Equals(strFYear))
104 {
105 _thisRow["Date"] = _row["Date"];
106 _thisRow["Class"] = _row["Class"];
107 _thisTable.Rows.Remove(_row);
108 _thisTable.Rows.InsertAt(_thisRow, 0);
109 break;
110 }
111 }
112
113 GetData(_thisTable);
114 }
115
116
117
118
119
下面将放入常用日期处理类（当然这些常用函数大多数都是从网上搜索，希望大家一起完善此类。如有侵犯原版请指出）
日程处理类
1 public class DateTimeUtils
2 {
3 //当天与该周星期一相差的天数
4 public static int getModdayNum(System.DayOfWeek dw)
5 {
6 int weeknow = Convert.ToInt32(dw);
7 int moddayNum = (-1) * weeknow + 1;
8 return moddayNum;
9 }
10
11 //当天与该周星期日相差的天数
12 public static int getSundayNum(System.DayOfWeek dw)
13 {
14 int weeknow = Convert.ToInt32(dw);
15 int sundayNum = 7 - weeknow;
16 return sundayNum;
17 }
18
19 //该周星期一的日期
20 public static string getWeekMonday(System.DayOfWeek dw, string timeFormateStr)
21 {
22 int weeknow = Convert.ToInt32(dw);
23 int moddayNum = (-1) * weeknow + 1;
24 string weekMonday = System.DateTime.Now.AddDays(moddayNum).Date.ToString(timeFormateStr);
25 return weekMonday;
26 }
27
28 //该周星期日的日期
29 public static string getWeekSunday(System.DayOfWeek dw, string timeFormateStr)
30 {
31 int weeknow = Convert.ToInt32(dw);
32 int sundayNum = 7 - weeknow;
33 string weekSunday = System.DateTime.Now.AddDays(sundayNum).Date.ToString(timeFormateStr);
34 return weekSunday;
35 }
36
37 //本周是本年第几周
38 public static int weekNum(System.DayOfWeek dw)
39 {
40 int weeknow = Convert.ToInt32(dw);//今天星期几
41 int daydiff = (-1) * (weeknow + 1);//今日与上周末的天数差
42 int days = System.DateTime.Now.AddDays(daydiff).DayOfYear;//上周末是本年第几天
43 int weeks = days / 7;
44 if (days % 7 != 0)
45 {
46 weeks++;
47 }
48 return (weeks + 2);
49 }
50
51 //获取某年的第一天
52 public static string YearOneDay(DateTime argTime)
53 {
54 int yearDay = argTime.DayOfYear;
55 TimeSpan ts = new TimeSpan(yearDay);
56 argTime = argTime.Subtract(ts);
57 return argTime.ToShortDateString();
58 }
59
60
61 /// <summary>
62 /// 得到一年中的某周的起始日和截止日
63 /// 年 nYear
64 /// 周数 nNumWeek
65 /// 周始 out dtWeekStart
66 /// 周终 out dtWeekeEnd
67 /// </summary>
68 /// <param name="nYear"></param>
69 /// <param name="nNumWeek"></param>
70 /// <param name="dtWeekStart"></param>
71 /// <param name="dtWeekeEnd"></param>
72 public static void GetWeek(int nYear, int nNumWeek, out DateTime dtWeekStart, out DateTime dtWeekeEnd)
73 {
74 DateTime dt = new DateTime(nYear, 1, 1);
75 dt = dt + new TimeSpan((nNumWeek - 1) * 7, 0, 0, 0);
76 //dtWeekStart = dt.AddDays(-(int)dt.DayOfWeek + (int)DayOfWeek.Monday);
77 //dtWeekeEnd = dt.AddDays((int)DayOfWeek.Saturday - (int)dt.DayOfWeek + 1);
78
79 dtWeekStart = dt.AddDays(Convert.ToDouble((0 - Convert.ToInt16(dt.DayOfWeek))));
80 dtWeekeEnd = dt.AddDays(Convert.ToDouble((6 - Convert.ToInt16(dt.DayOfWeek))));
81 }
82
83
84 /**/
85 /// <summary>
86 /// 求当前日期是一年的中第几周
87 /// </summary>
88 /// <param name="date"></param>
89 /// <returns></returns>
90 public static int WeekOfYear(DateTime curDay)
91 {
92 int firstdayofweek = Convert.ToInt32(Convert.ToDateTime(curDay.Year.ToString() + "- " + "1-1 ").DayOfWeek);
93
94 int days = curDay.DayOfYear;
95 int daysOutOneWeek = days - (7 - firstdayofweek);
96
97 if (daysOutOneWeek <= 0)
98 {
99 return 1;
100 }
101 else
102 {
103 int weeks = daysOutOneWeek / 7;
104 if (daysOutOneWeek % 7 != 0)
105 weeks++;
106 return weeks + 1;
107 }
108 }
109
110
111 /// <summary>
112 /// 取得某月的第一天
113 /// </summary>
114 /// <param name="datetime">要取得月份第一天的时间 </param>
115 /// <returns> </returns>
116 public static DateTime FirstDayOfMonth(DateTime datetime)
117 {
118 return datetime.AddDays(1 - datetime.Day);
119 }
120
121 /**/
122 /// <summary>
123 /// 取得某月的最后一天
124 /// </summary>
125 /// <param name="datetime">要取得月份最后一天的时间 </param>
126 /// <returns> </returns>
127 public static DateTime LastDayOfMonth(DateTime datetime)
128 {
129 return datetime.AddDays(1 - datetime.Day).AddMonths(1).AddDays(-1);
130 }
131
132 /**/
133 /// <summary>
134 /// 取得上个月第一天
135 /// </summary>
136 /// <param name="datetime">要取得上个月第一天的当前时间 </param>
137 /// <returns> </returns>
138 public static DateTime FirstDayOfPreviousMonth(DateTime datetime)
139 {
140 return datetime.AddDays(1 - datetime.Day).AddMonths(-1);
141 }
142
143 /**/
144 /// <summary>
145 /// 取得上个月的最后一天
146 /// </summary>
147 /// <param name="datetime">要取得上个月最后一天的当前时间 </param>
148 /// <returns> </returns>
149 public static DateTime LastDayOfPrdviousMonth(DateTime datetime)
150 {
151 return datetime.AddDays(1 - datetime.Day).AddDays(-1);
152 }
153
154 public static string workZh(string argName)
155 {
156 string strName = string.Empty;
157 switch (argName)
158 {
159 case "Saturday":
160 strName = "星期六";
161 break;
162 case "Sunday":
163 strName = "星期日";
164 break;
165 case "Friday":
166 strName = "星期五";
167 break;
168 case "Thursday":
169 strName = "星期四";
170 break;
171 case "Wednesday":
172 strName = "星期三";
173 break;
174 case "Tuesday":
175 strName = "星期二";
176 break;
177 case "Monday":
178 strName = "星期一";
179 break;
180 }
181 return strName;
182 }
183
184 }
2 {
3 //当天与该周星期一相差的天数
4 public static int getModdayNum(System.DayOfWeek dw)
5 {
6 int weeknow = Convert.ToInt32(dw);
7 int moddayNum = (-1) * weeknow + 1;
8 return moddayNum;
9 }
10
11 //当天与该周星期日相差的天数
12 public static int getSundayNum(System.DayOfWeek dw)
13 {
14 int weeknow = Convert.ToInt32(dw);
15 int sundayNum = 7 - weeknow;
16 return sundayNum;
17 }
18
19 //该周星期一的日期
20 public static string getWeekMonday(System.DayOfWeek dw, string timeFormateStr)
21 {
22 int weeknow = Convert.ToInt32(dw);
23 int moddayNum = (-1) * weeknow + 1;
24 string weekMonday = System.DateTime.Now.AddDays(moddayNum).Date.ToString(timeFormateStr);
25 return weekMonday;
26 }
27
28 //该周星期日的日期
29 public static string getWeekSunday(System.DayOfWeek dw, string timeFormateStr)
30 {
31 int weeknow = Convert.ToInt32(dw);
32 int sundayNum = 7 - weeknow;
33 string weekSunday = System.DateTime.Now.AddDays(sundayNum).Date.ToString(timeFormateStr);
34 return weekSunday;
35 }
36
37 //本周是本年第几周
38 public static int weekNum(System.DayOfWeek dw)
39 {
40 int weeknow = Convert.ToInt32(dw);//今天星期几
41 int daydiff = (-1) * (weeknow + 1);//今日与上周末的天数差
42 int days = System.DateTime.Now.AddDays(daydiff).DayOfYear;//上周末是本年第几天
43 int weeks = days / 7;
44 if (days % 7 != 0)
45 {
46 weeks++;
47 }
48 return (weeks + 2);
49 }
50
51 //获取某年的第一天
52 public static string YearOneDay(DateTime argTime)
53 {
54 int yearDay = argTime.DayOfYear;
55 TimeSpan ts = new TimeSpan(yearDay);
56 argTime = argTime.Subtract(ts);
57 return argTime.ToShortDateString();
58 }
59
60
61 /// <summary>
62 /// 得到一年中的某周的起始日和截止日
63 /// 年 nYear
64 /// 周数 nNumWeek
65 /// 周始 out dtWeekStart
66 /// 周终 out dtWeekeEnd
67 /// </summary>
68 /// <param name="nYear"></param>
69 /// <param name="nNumWeek"></param>
70 /// <param name="dtWeekStart"></param>
71 /// <param name="dtWeekeEnd"></param>
72 public static void GetWeek(int nYear, int nNumWeek, out DateTime dtWeekStart, out DateTime dtWeekeEnd)
73 {
74 DateTime dt = new DateTime(nYear, 1, 1);
75 dt = dt + new TimeSpan((nNumWeek - 1) * 7, 0, 0, 0);
76 //dtWeekStart = dt.AddDays(-(int)dt.DayOfWeek + (int)DayOfWeek.Monday);
77 //dtWeekeEnd = dt.AddDays((int)DayOfWeek.Saturday - (int)dt.DayOfWeek + 1);
78
79 dtWeekStart = dt.AddDays(Convert.ToDouble((0 - Convert.ToInt16(dt.DayOfWeek))));
80 dtWeekeEnd = dt.AddDays(Convert.ToDouble((6 - Convert.ToInt16(dt.DayOfWeek))));
81 }
82
83
84 /**/
85 /// <summary>
86 /// 求当前日期是一年的中第几周
87 /// </summary>
88 /// <param name="date"></param>
89 /// <returns></returns>
90 public static int WeekOfYear(DateTime curDay)
91 {
92 int firstdayofweek = Convert.ToInt32(Convert.ToDateTime(curDay.Year.ToString() + "- " + "1-1 ").DayOfWeek);
93
94 int days = curDay.DayOfYear;
95 int daysOutOneWeek = days - (7 - firstdayofweek);
96
97 if (daysOutOneWeek <= 0)
98 {
99 return 1;
100 }
101 else
102 {
103 int weeks = daysOutOneWeek / 7;
104 if (daysOutOneWeek % 7 != 0)
105 weeks++;
106 return weeks + 1;
107 }
108 }
109
110
111 /// <summary>
112 /// 取得某月的第一天
113 /// </summary>
114 /// <param name="datetime">要取得月份第一天的时间 </param>
115 /// <returns> </returns>
116 public static DateTime FirstDayOfMonth(DateTime datetime)
117 {
118 return datetime.AddDays(1 - datetime.Day);
119 }
120
121 /**/
122 /// <summary>
123 /// 取得某月的最后一天
124 /// </summary>
125 /// <param name="datetime">要取得月份最后一天的时间 </param>
126 /// <returns> </returns>
127 public static DateTime LastDayOfMonth(DateTime datetime)
128 {
129 return datetime.AddDays(1 - datetime.Day).AddMonths(1).AddDays(-1);
130 }
131
132 /**/
133 /// <summary>
134 /// 取得上个月第一天
135 /// </summary>
136 /// <param name="datetime">要取得上个月第一天的当前时间 </param>
137 /// <returns> </returns>
138 public static DateTime FirstDayOfPreviousMonth(DateTime datetime)
139 {
140 return datetime.AddDays(1 - datetime.Day).AddMonths(-1);
141 }
142
143 /**/
144 /// <summary>
145 /// 取得上个月的最后一天
146 /// </summary>
147 /// <param name="datetime">要取得上个月最后一天的当前时间 </param>
148 /// <returns> </returns>
149 public static DateTime LastDayOfPrdviousMonth(DateTime datetime)
150 {
151 return datetime.AddDays(1 - datetime.Day).AddDays(-1);
152 }
153
154 public static string workZh(string argName)
155 {
156 string strName = string.Empty;
157 switch (argName)
158 {
159 case "Saturday":
160 strName = "星期六";
161 break;
162 case "Sunday":
163 strName = "星期日";
164 break;
165 case "Friday":
166 strName = "星期五";
167 break;
168 case "Thursday":
169 strName = "星期四";
170 break;
171 case "Wednesday":
172 strName = "星期三";
173 break;
174 case "Tuesday":
175 strName = "星期二";
176 break;
177 case "Monday":
178 strName = "星期一";
179 break;
180 }
181 return strName;
182 }
183
184 }
