[C#] DateTime 練習

使用簡易的Today 與 Now 做練習

1. using System;
2. using System.Collections.Generic;
3. using System.Linq;
4. using System.Web;
5. using System.Web.UI;
6. using System.Web.UI.WebControls;
8. public partial class Datetime : System.Web.UI.Page
9. {
10.     protected void Page_Load(object sender, EventArgs e)
11.     {
12.         TodayInfo();
13.         Response.Write( "<br/>");
14.         NowInfo();
15.     }
17.     //datetome.today
18.     private void TodayInfo()
19.     {
20.         //用Today屬性  時間上都是預設12:00:00
21.         //取得今天是星期幾
22.         Response.Write("Today.DayOfWeek : " + DateTime.Today.DayOfWeek.ToString() + "<br/>");
23.         //今天是今年的第幾天
24.         Response.Write("Today.DayOfYear : " + DateTime.Today.DayOfYear.ToString() + "<br/>");
25.         //取得今天日期
26.         //Response.Write("Today.Date : "+DateTime.Today.Date + "<br/>");
27.         //結果同上
28.         //Response.Write("Today : "+DateTime.Today + "<br/>");
29.         //短日期 無時間
30.         Response.Write("Today.ToShortDateString : " + DateTime.Today.ToShortDateString(
    ) + "<br/>");
31.         //長日期 有國字年月日 無時間
32.         Response.Write("Today.ToLongDateString : " + DateTime.Today.ToLongDateString() + "<br/>");
33.         //短時間 無秒數
34.         // Response.Write("Today.ToShortTimeString : " + DateTime.Today.ToShortTimeString() + "<br/>");
35.         //長時間
36.         //Response.Write("Today.ToLongTimeString : " + DateTime.Today.ToLongTimeString() + "<br/>");
37.         //現在月份
38.         Response.Write("Today.Month : " + DateTime.Today.Month + "<br/>");
39.         //日期+36天
40.         Response.Write("Today.AddDays(36) : " + DateTime.Today.AddDays(36).ToLongDateString() + "<br/>");
41.         //日期+36天並轉成星期幾
42.         Response.Write("Today.AddDays(36) : " + DateTime.Today.AddDays(36).DayOfWeek.ToString() + "<br/>");
43.         //加時間 TimeSpan(天,時,分,秒)
44.         Response.Write("Today.Add(new TimeSpan(30, 0, 0, 0) " + DateTime.Today.Add(new TimeSpan(30, 0, 0, 0)) + "<br/>");
45.         //windows檔案時間
46.         Response.Write("Today.ToFileTime().ToString() : " + DateTime.Today.ToFileTime().ToString() + "<br/>");
47.         // 根據哪邊時間
48.         Response.Write("Today.Kind : " + DateTime.Today.Kind + "<br/>");
49.     }
50.     //datetime.now
51.     private void NowInfo()
52.     {
53.         //Now 才能顯示正確時間
54.         Response.Write("Now : " + DateTime.Now.ToString() + "<br/>");
55.         //顯示時間
56.         Response.Write("Now.ToLongTimeString() : " + DateTime.Now.ToLongTimeString() + "<br/>");
58.         Response.Write("Now.ToShortTimeString() : " + DateTime.Now.ToShortTimeString() + "<br/>");
59.         //顯示日期
60.         Response.Write("Now.ToLongDateString() : " + DateTime.Now.ToLongDateString() + "<br/>");
62.         Response.Write("Now.ToShortDateString() : " + DateTime.Now.ToShortDateString() + "<br/>");
64.         Response.Write("Now : " + DateTime.Now.Hour + "<br/>");
65.     }
66. }