C#Çå³ýÒ³Ãæ»º´æ
C#Çå³ýÒ³Ãæ»º´æ
private void SetPageNoCache()
{
Response.Buffer = true;
Response.ExpiresAbsolute = System.DateTime.Now.AddSeconds(-1);
Response.Expires = 0;
Response.CacheControl = "no-cache";
Response.AddHeader("Pragma", "No-Cache");
}
(1) Response.Buffer = true;
Response.ExpiresAbsolute = System.DateTime.Now.AddSeconds(-1);
Response.Expires = 0;
Response.CacheControl = "no-cache";
Response.AddHeader("Pragma", "No-Cache");
(2) HTML·½·¨
<meta http-equiv="Pragma" content="no-cache">
<meta http-equiv="Cache-Control" content="no-cache">
<meta http-equiv="Expires" content="0">
(3) ÖØÐµ÷ÓÃÔÒ³ÃæµÄʱºòÔÚ¸øÒ³Ãæ´«Ò»¸ö²ÎÊý: href="****.aspx?random()"
Ïà¹ØÎĵµ£º
C# ÓïÑÔÖеÄÓÐЩ¹¹ÔìÒªÇóij¸öÀàÐÍÖÁÉÙÓëij¸ö³ÉÔ±»òÆäËûÀàÐ;ßÓÐͬÑùµÄ¿É·ÃÎÊÐÔ (at least as accessible as)¡£Èç¹û T µÄ¿É·ÃÎÊÓòÊÇ M ¿É·ÃÎÊÓòµÄ³¬¼¯£¬ÎÒÃǾÍ˵ÀàÐÍ T ÖÁÉÙÓë³ÉÔ±»òÀàÐÍ M ¾ßÓÐͬÑùµÄ¿É·ÃÎÊÐÔ¡£»»ÑÔÖ®£¬Èç¹û T ÔÚ¿É·ÃÎÊ M µÄËùÓÐÉÏÏÂÎÄÖж¼ÊǿɷÃÎʵģ¬Ôò T ÖÁÉÙÓë M ¾ßÓÐͬÑùµÄ¿É·ÃÎÊÐÔ¡£
´æÔÚÏÂÁпɷÃÎÊÐ ......
ÕâÁ½¸öÔÚÒ»°ãÇé¿öÏÂÊÇÏàµÈµÄ£¬µ«ÊÇϵͳ´¦Àí»úÖÆÉÏÈ´ÓÐËù²»Í¬¡£
""»áÔÚÄÚ´æÀï»®Ò»¿é³¤¶ÈΪ0µÄ´æ´¢¿Õ¼ä£¬¶øString.EmptyÄÚ´æ²¢²»ÎªËü·ÖÅä¿Õ¼ä£¬ËùÒÔÎÞÂÛÐÔÄÜ»¹ÊÇËÙ¶ÈÉÏString.Empty¶¼ÓÅÓÚ""¡£
Ôø¾¿´¹ýһƪÅжÏ×Ö·û´®¿ÕÖµµÄÐÔÄÜÎÄÕ£¬ÀÏÍâдµÄ¹úÈË·Ò룬ÎÄÕ´óÒâ ......
Õâ±¾Êé½²½â
C#
ÓïÑÔÊ®·ÖÏêϸ£¬ÎÒ½«ÆäÖеÄÖØÒªÄÚÈÝÕûÀí³ÉÌõ¿î£¬ÒÔ±¸Íü¡£
1.
ʼþÊÇÔÚÂú×ãij¸öÌØ¶¨Ìõ¼þʱ·¢ÉúµÄ£¬´¥·¢
(raise)
ʼþµÄ¶ÔÏó³ÆÎª·¢²¼Õß
(publisher)
£¬¶ÔÕâ¸öʼþ½øÐÐÏìÓ¦µÄ¶ÔÏó³ÆÎª¶©ÔÄÕß
(subscriber)
¡£Ê¼þ´¦Àí³ÌÐòÊÇ×¢²áµ½Ê¼þµÄ·½·¨£¬¿ÉÔÚÈκÎÀà»òÕ߽ṹ ......
ö¾Ù
¡¡¡¡Ã¶¾ÙÀàÐÍÉùÃ÷Ϊһ×éÏà¹ØµÄ·ûºÅ³£Êý¶¨ÒåÁËÒ»¸öÀàÐÍÃû³Æ¡£Ã¶¾ÙÓÃÓÚ“¶àÏîÑ¡Ôñ”³¡ºÏ£¬¾ÍÊdzÌÐòÔËÐÐʱ´Ó±àÒëʱÒѾÉ趨µÄ¹Ì¶¨ÊýÄ¿µÄ“Ñ¡Ôñ”ÖÐ×ö³ö¾ö¶¨¡£
¡¡¡¡Ã¶¾ÙÀàÐÍ£¨Ò²³ÆÎªÃ¶¾Ù£©Îª¶¨ÒåÒ»×é¿ÉÒÔ¸³¸ø±äÁ¿µÄÃüÃûÕûÊý³£Á¿ÌṩÁËÒ»ÖÖÓÐЧµÄ·½·¨¡£ÀýÈ磬¼ÙÉèÄú±ØÐ붨ÒåÒ»¸ö±äÁ¿£¬¸Ã±äÁ¿ ......
ÎÒÒÔΪ£¬ÔÚËùÓÐģʽÖУ¬×î¼òµ¥¡¢×î³£ÓõľÍÊǹ¤³§Ä£Ê½ÁË£¨°üÀ¨³éÏ󹤳§£©¡£
¹¤³§Ä£Ê½ºÍ³éÏóģʽµÄÇø±ðÔÚÓÚ£¬¹¤³§Ä£Ê½ÊÇͨ¹ý²ÎÊý£¨Ò»°ã½ÐÐͱðÂ룩À´¶¯Ì¬Éú³É¶ÔÏ󣬶ø³éÏ󹤳§±ØÐëÁ˽âÉÏÏÂÎIJÅÄܵ÷ÓÃÏàÓ¦µÄ¶ÔÏó¡£ÊµÀý´úÂëÈçÏ£º
Ò»¡¢¹¤³§Ä£Ê½
public class Factory
{
public static object Create(int type)
{
......