C#£¨C sharp£©×Ö·û´®ºÍʱ¼äµÄÏ໥ת»»
C#£¨C sharp£©×Ö·û´®ºÍʱ¼äµÄÏ໥ת»»¡£
Ò»¡¢DateTime –> string
ʱ¼äÀàÐÍת»¯³É×Ö·û´®ÀàÐÍ£¬ÄÇÊÇÏ൱µÄ¼òµ¥£¬Ö±½Óµ÷ÓÃToString()·½·¨¼´¿É¡£È磺
DateTime dt = DateTime.Now;
string dtStr = dt.ToString();
Èç¹ûÏë¶ÔÊä³ö¸ñʽ»¯£¬¿ÉÒÔÕâôд£º
dt.ToString("yyyyÄêMMÔÂddÈÕ"); //2005Äê11ÔÂ5ÈÕ
dt.ToString("yyyy-MM-dd"); //2005-11-5
string.Format("{0:d}",dt); //2005-11-5
string.Format("{0:D}",dt); //2005Äê11ÔÂ5ÈÕ
ʱ¼äÀàÐ͸ñʽ»¯£¨³É×Ö·ûÀàÐÍ£©¿ÉÒÔͨ¹ýÁ½ÖÖ·½Ê½£º1¡¢×Ô¶¨Òåʱ¼ä¸ñʽ¡£×Ô¼º¶¨Òåʱ¼äµÄ¹¹³ÉºÍ±íʾ£»2¡¢±ê׼ʱ¼ä¸ñʽ¡£Óɱê×¼¿âÌṩµÄÓÐÏ޵ıíʾ·½Ê½¡££¨ÏêϸµÄÇé²Î¿¼ÁÐ±í£©
¶þ¡¢string -> DateTime
string dtString = “2009-10-12 00:12:05”;
DateTime dt = DateTime.Parse(dtStr); //·½Ê½Ò»
DateTime dt2 = Convert.ToDateTime(dtStr); //·½Ê½¶þ
µ±È»DateTimeÒ²ÓжàÖÖ±íʾ·½Ê½£¨·Ç¸ñʽ»¯³É×Ö·û´®ÀàÐÍ£©£¬È磺
dt.ToFileTimeUtc(); //127756704859912816
dt.ToLocalTime(); //2005-11-5 21:21:25
dt.ToLongDateString(); //2005Äê11ÔÂ5ÈÕ
µ±È»Èç¹û×îºóÒª´òÓ¡³öÀ´£¬¾ÍÐèÒªToString()һϣ¬×ª»¯³É×Ö·û´®ÀàÐÍ¡£
Èý¡¢Ê±¼äµÄÆäËü·½·¨£¬ÊôÐÔºÍÔËËã
dt.Year //2005
dt.Date
Ïà¹ØÎĵµ£º
Ê®Ììѧ»áASP.net֮ʵսϵÁУ¨C#ºÍVb.netË«°æ±¾£©
µÚÒ»Ìì
ÎÒÈÏΪASP.NET±ÈASPÄѺܶ࣬ϣÍû´ó¼Ò×öºÃ×¼±¸¡£ÄÑÄÑÔÚʵÏÖͬһ¸öЧ¹ûÓкܶ෽·¨£¬´ó¼Ò»òÐí»áÒÉ»ó¡£Ê®Ììѧ»áϵÁн̳̻áÇåÎúµÄд³ö¸÷ÖÖ·½·¨£¬Èôó¼ÒÄÜÉÙÒ»µã¿²¿À¡£ÔÚASPÀïÃæ£¬´ó¼Ò¼¸ºõ¶¼ÊÇʹÓÃVB£¬Êý¾Ý¿âÂҲÎÞ·ÇÊÇSQLºÍACCESS¡£ÔÚASP.NETÀïÃæ£¬Êý¾Ý¿â»¹ÊÇÕ ......
ÎÒÃÇ»¹¿ÉÒÔ²ÉÓÃÒ»ÖÖ¸ü¼Ó¼ò±ãµÄ·½
·¨À´ÊµÏÖÉÏÊö³ÌÐòµÄ¹¦ÄÜ¡£Õâ¾ÍÊǽ«SqlConnection¶ÔÏó°üº¬µ½usingÇø¿éÖУ¬ÕâÑù³ÌÐò»á×Ô¶¯µ÷ÓÃDispose()·½·¨ÊÍ·Å
SqlConnection¶ÔÏóËùÕ¼ÓõÄϵͳ×ÊÔ´£¬ÎÞÐèÔÙʹÓÃSqlConnection¶ÔÏóµÄClose()·½·¨¡£
·¶Àý³ÌÐò´úÂëÈçÏ£º
public partial class _Default : System.Web.UI.Page
{
......
ÓÐËÕæÕýµÄÀí½â¹ýÒ»¸ö±àÒëÆ÷ÄØ£¿Ðí¶àÈËÈÏΪTCºÜ¼òµ¥ºÜÂäºó£¬µ«ÊǼ´±ãÊÇÕâÑù¼òµ¥µÄ¹¤¾ß£¬µ½µ×Óм¸¸öÈËÕæÕýµÄÉîÈëÀí½âÁËÄØ£¿Ò»¸ö¼òµ¥µÄ±àÒëÆ÷¶¼²»ÄÜÀí½â£¬ÈçºÎÄܳÉΪ¸ßÊÖ£¬ÈçºÎÄÜÉîÈëµÄʹÓøü¼Ó¸ß¼¶µÄ¹¤¾ßÄØ£¿²»ÒªÒÔΪ×Ô¼ºÊ¹ÓõÄÊÇVC¾ÍºÜÁ˲»Æð£¬ÒòΪʹÓÃÕâÑùɵ¹Ï»¯µÄ¹¤¾ßÖ»ÄÜÈÃÄã¿´²»µ½ÊÂÎïµÄ±¾ÖÊ¡£½ÓÏÂÀ´ÎÒÃǾÍÀ´ÉîÈëµÄÈÏ ......
C/C++ÖÐStaticµÄ×÷ÓÃÏêÊö
Ò».ÔÚCÓïÑÔÖУ¬staticµÄ×ÖÃæÒâ˼ºÜÈÝÒ×°ÑÎÒÃǵ¼ÈëÆç;£¬ÆäʵËüµÄ×÷ÓÃÓÐÈýÌõ¡£
£¨1£©ÏÈÀ´½éÉÜËüµÄµÚÒ»ÌõÒ²ÊÇ×îÖØÒªµÄÒ»Ìõ£ºÒþ²Ø¡£
µ±ÎÒÃÇͬʱ±àÒë¶à¸öÎļþʱ£¬ËùÓÐδ¼Óstaticǰ׺µÄÈ«¾Ö±äÁ¿ºÍº¯Êý¶¼¾ßÓÐÈ«¾Ö¿É¼ûÐÔ¡£ÎªÀí½âÕâ¾ä»°£¬ÎÒ¾ÙÀýÀ´ËµÃ÷¡£ÎÒÃÇҪͬʱ±àÒëÁ½¸öÔ´Îļþ£¬Ò»¸öÊÇa.c£¬ÁíÒ»¸öÊÇm ......