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DateTime.ToString()的各种日期格式例：ToString:2016/9/27 0:00:00 ToString(&quot;yyyy/MM/dd&quot;):2016/09/27 ToString(&quot;yyyy-MM-dd&quot;):2016-09-27 ToString(&quot;yyyy.MM.dd&quot;):2016.09.27 ToString(&quot;dd/MM/yyyy&quot;):27/09/2016 ToString(&quot;dd-MM-yyyy&quot;):27-09-2016 ToString(&quot;yyyy年MM月dd日&quot;):2016年09月27日ToString(&quot;yyyy-MM-dd HH:mm:ss.fff&quot;));&nbsp; 2016-09-27 01:02:03.001&nbsp;&nbsp; // fff 越多精度越高 ToString(&quot;yyyy-MM-dd HH:mm:ss:ms&quot;)); 2016-09-27 01:02:03:234 详细解释： 1.<span style="font-family: &#39;Times New Roman&#39;; font-style: normal; font-weight: normal; line-height: normal; font-size-adjust: none; font-stretch: normal; font-feature-settings: normal; font-language-override: normal; font-kerning: auto; font-synthesis: weight style; font-variant: normal;">y代表年份，注意是小写的y，大写的Ｙ并不代表年份。2.<span style="font-family: &#39;Times New Roman&#39;; font-style: normal; font-weight: normal; line-height: normal; font-size-adjust: none; font-stretch: normal; font-feature-settings: normal; font-language-override: normal; font-kerning: auto; font-synthesis: weight style; font-variant: normal;">M表示月份。3.<span style="font-family: &#39;Times New Roman&#39;; font-style: normal; font-weight: normal; line-height: normal; font-size-adjust: none; font-stretch: normal; font-feature-settings: normal; font-language-override: normal; font-kerning: auto; font-synthesis: weight style; font-variant: normal;">d表示日期，注意D并不代表什么。4.<span style="font-family: &#39;Times New Roman&#39;; font-style: normal; font-weight: normal; line-height: normal; font-size-adjust: none; font-stretch: normal; font-feature-settings: normal; font-language-override: normal; font-kerning: auto; font-synthesis: weight style; font-variant: normal;">h或H表示小时，h用的是12小时制，H用的是24小时制。5.<span style="font-family: &#39;Times New Roman&#39;; font-style: normal; font-weight: normal; line-height: normal; font-size-adjust: none; font-stretch: normal; font-feature-settings: normal; font-language-override: normal; font-kerning: auto; font-synthesis: weight style; font-variant: normal;">m表示分钟。6.<span style="font-family: &#39;Times New Roman&#39;; font-style: normal; font-weight: normal; line-height: normal; font-size-adjust: none; font-stretch: normal; font-feature-settings: normal; font-language-override: normal; font-kerning: auto; font-synthesis: weight style; font-variant: normal;">s表示秒。注意S并不代表什么。&nbsp;<table style="width: 770px;" width="1079" height="1649" cellspacing="0" cellpadding="0" align="left"><tbody><tr class="firstRow"><td style="padding: 0cm 5.4pt; background: rgb(224, 224, 224) none repeat scroll 0% 0%; border: 1pt solid windowtext;" width="114" valign="top">格式</td><td style="border-color: windowtext windowtext windowtext rgb(212, 208, 200); border-style: solid solid solid none; border-width: 1pt 1pt 1pt medium; padding: 0cm 5.4pt; background: rgb(224, 224, 224) none repeat scroll 0% 0%;" width="81" valign="top">输出</td><td style="border-color: windowtext windowtext windowtext rgb(212, 208, 200); border-style: solid solid solid none; border-width: 1pt 1pt 1pt medium; padding: 0cm 5.4pt; background: rgb(224, 224, 224) none repeat scroll 0% 0%;" width="371" valign="top">示例</td></tr><tr><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt; background: rgb(255, 255, 153) none repeat scroll 0% 0%;" colspan="3" width="566" valign="top">年</td></tr><tr><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt;" width="114" valign="top">y</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="81" valign="top">7</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="371" valign="top">string yy = DateTime.Now.ToString(&quot;y-MM&quot;)yy=&quot;7-05&quot;</td></tr><tr><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt;" width="114" valign="top">yy</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="81" valign="top">07</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="371" valign="top">string yy = DateTime.Now.ToString(&quot;yy-MM&quot;)yy=&quot;07-05&quot;</td></tr><tr><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt;" width="114" valign="top">yyy或更多的y</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="81" valign="top">1984</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="371" valign="top">string yy = DateTime.Now.ToString(&quot;yyyy&quot;);yy=&quot;2007&quot;</td></tr><tr><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt; background: rgb(255, 255, 153) none repeat scroll 0% 0%;" colspan="3" width="566" valign="top">月</td></tr><tr><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt;" width="114" valign="top">M</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="81" valign="top">5.</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="371" valign="top">string mon = DateTime.Parse(&quot;1984-05-09&quot;)ToString(&quot;yyyy-M&quot;)mon = &quot;1984-5&quot;</td></tr><tr><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt;" width="114" valign="top">MM</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="81" valign="top">05. </td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="371" valign="top">string mon = DateTime.Parse(&quot;1984-05-09&quot;)ToString(&quot;MＭ&quot;)mon = &quot;05&quot;</td></tr><tr><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt;" width="114" valign="top">MMM</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="81" valign="top">如果是中文版的操作系统，则会输出：五月.如果是英文操作系统，则输入月份前三个字母的简写：May</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="371" valign="top">string mon = DateTime.Parse(&quot;2006-07-01&quot;).ToString(&quot;MMM&quot;)英文版操作系统：Jul中文版操作系统：七月</td></tr><tr><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt;" width="114" valign="top">MMMM或更多的Ｍ</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="81" valign="top">如果是中文版的操作系统，则会输出：五月.如果是英文操作系统，则输入月份的全写</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="371" valign="top">string mon = DateTime.Parse(&quot;2006-07-01&quot;).ToString(&quot;MMM&quot;)英文版操作系统：July中文版操作系统：七月</td></tr><tr style="height: 13.75pt;"><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt; background: rgb(255, 255, 153) none repeat scroll 0% 0%;" colspan="3" width="566" valign="top" height="13">日期或星期</td></tr><tr><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt;" width="114" valign="top">d</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="81" valign="top">9</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="371" valign="top">string dd= DateTime.Parse(&quot;1984-05-09&quot;)ToString(&quot;d&quot;)dd= &quot;9&quot;</td></tr><tr><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt;" width="114" valign="top">dd</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="81" valign="top">09</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="371" valign="top">string dd= DateTime.Parse(&quot;1984-05-09&quot;)ToString(&quot;dd&quot;)dd= &quot;09&quot;</td></tr><tr><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt;" width="114" valign="top">ddd</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="81" valign="top">如果是中文版的操作系统，则会输出星期，如星期三。.如果是英文操作系统，则输出星期的简写：如Wed</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="371" valign="top">string dd = DateTime.Parse(&quot;2006-07-01&quot;).ToString(&quot;ddd&quot;)英文版操作系统：Wed中文版操作系统：星期三</td></tr><tr><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt;" width="114" valign="top">dddd或更多的d</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="81" valign="top">如果是中文版的操作系统，则会输出星期，如星期三。.如果是英文操作系统，则输出星期：如Wednesday</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="371" valign="top">string dd = DateTime.Parse(&quot;2006-07-01&quot;).ToString(&quot;dddd&quot;)英文版操作系统：Wednesday中文版操作系统：星期三</td></tr><tr><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt; background: rgb(255, 255, 153) none repeat scroll 0% 0%;" colspan="3" width="566" valign="top">小时</td></tr><tr><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt;" width="114" valign="top">h</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="81" valign="top">小时范围：1-12</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="371" valign="top">string hh = DateTime.Now.ToString(“h”);hh = 8</td></tr><tr><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt;" width="114" valign="top">hh或更多的h</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="81" valign="top">小时范围：1-12</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="371" valign="top">string hh = DateTime.Now.ToString(“hh”);hh = 08</td></tr><tr><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt;" width="114" valign="top">H</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="81" valign="top">小时范围：0-23</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="371" valign="top">string hh = DateTime.Now.ToString(“yyyy-H”);hh = 2006-8</td></tr><tr><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt;" width="114" valign="top">HH或更多的H</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="81" valign="top">小时范围：0-23</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="371" valign="top">string hh = DateTime.Now.ToString(“yyyy-HH”);hh = 2006-08string hh = DateTime.Pare(“2006-7-4 18:00:00”).ToString(“yyyy-HH”);hh = 2006-18</td></tr><tr><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt; background: rgb(255, 255, 153) none repeat scroll 0% 0%;" colspan="3" width="566" valign="top">分钟</td></tr><tr><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt;" width="114" valign="top">m</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="81" valign="top">6</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="371" valign="top">string mm = DateTime.Now.ToString(&quot;yyyy-MM-dd-m&quot;);mm = “2006-07-01-6”;</td></tr><tr><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt;" width="114" valign="top">mm或更多的m</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="81" valign="top">06</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="371" valign="top">string mm = DateTime.Now.ToString(&quot;yyyy-MM-dd-mm&quot;);mm = “2006-07-01-06”;</td></tr><tr><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt; background: rgb(255, 255, 153) none repeat scroll 0% 0%;" colspan="3" width="566" valign="top">秒</td></tr><tr><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt;" width="114" valign="top">s</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="81" valign="top">6</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="371" valign="top">string mm = DateTime.Now.ToString(&quot;yyyy-MM-dd-s&quot;);mm = “2006-07-01-6”;</td></tr><tr><td style="border-color: rgb(212, 208, 200) windowtext windowtext; border-style: none solid solid; border-width: medium 1pt 1pt; padding: 0cm 5.4pt;" width="114" valign="top">ss或更多的s</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="81" valign="top">06</td><td style="border-color: rgb(212, 208, 200) windowtext windowtext rgb(212, 208, 200); border-style: none solid solid none; border-width: medium 1pt 1pt medium; padding: 0cm 5.4pt;" width="371" valign="top">string mm = DateTime.Now.ToString(&quot;yyyy-MM-dd-ss&quot;);mm = “2006-07-01-06”;</td></tr></tbody></table>

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