C#Á¬½ÓsqlserverÊý¾Ý¿â
µ±ÔÚC#ÓïÑÔÖУ¬Á¬½ÓsqlÊý¾Ý¿âµÄʱºò£¬³£Óõ½sqlconnection½¨Á¢ÓëÊý¾Ý¿âµÄÁ¬½Ó¡£ Óï·¨ÈçÏ£º
String sqlcon = "***";//ÕâÀïÊÇÒ»¸ö×Ö·û´®£¬¾ßÌå¸úÊý¾Ý¿âµÄÑéÖ¤·½Ê½Óйء£
//sql server Éí·ÝÑéÖ¤ Á¬½Ó×Ö·û´®
private string ConnstrSqlServer = "server=·þÎñÆ÷Ãû³Æ;uid=µÇ¼Ãû³Æ;pwd=µÇ¼ÃÜÂë;database=Êý¾Ý¿âÃû³Æ";
//windows Éí·ÝÑéÖ¤Á¬½Ó×Ö·û´®
private string ConnstrWindows = "server=·þÎñÆ÷Ãû³Æ;database=Êý¾Ý¿âÃû³Æ;Trusted_Connection=SSPI";
SqlConnection connection = new SqlConnection(sqlcon);
ÀýÈ磺
SqlConnection connection = new SqlConnection("server=(local);database=dotNET_lab;Trusted_Connection=SSPI");
//windowsÑéÖ¤·½Ê½ ¡£
SqlConnection connection = new SqlConnection("server=(local);uid=sa;password=sa;database=dotNET_lab");
//»ìºÏÑéÖ¤·½Ê½ ¡£
È»ºó£¬
try {
connection.Open();
SqlCommand command = new SqlCommand("select count(*) from admin where username='"+username+"' and password='"+password+"'",connection);
SqlDataReader reader = command.ExecuteReader();
while(reader.Read())
{
n = reader.GetInt32(0);//nÊÇÔÚ֮ǰ¶¨ÒåµÄ£¬Èç¹ûn>0£¬ÏÔÈ»¾Í´æÔÚÕâÑùÒ»¸öÓû§¡£
}
//Console.WriteLine(reader.GetString(1));
}
catch(SqlException ex) {
&n
Ïà¹ØÎĵµ£º
ÔÚƽʱµÄ¹¤×÷¹ý³ÌÖУ¬×÷ΪDBA½ÇÉ«¹ÜÀíÊý¾Ý¿â£¬Í·ÄÔÖеÄÓ¡ÏóÍùÍùÊÇÊý¾Ý¿âʵÀýÃû³Æ£¬¶ø²»»áÈ¥¹ØÐÄServerµÄIP£¬¶ø×÷ΪDeveloperµÄ½ÇÉ«£¬ËûÃÇÍùÍùÏëÖªµÀÖªµÀServer IpºÍ¶Ë¿ÚºÅ¡£ËùÒÔ£¬DBA»á¾³£±»Îʼ°µ½£ºXXXʵÀýµÄIPºÍ¶Ë¿ÚºÅÊÇʲô£¿
Õâ¸öÎÊÌ⣬µ±È»ÎÒÃÇ¿ÉÒÔLoginµ½OS²é¿´IP¡¢Ê¹ÓÃÅäÖƹÜÀí¹¤¾ß»ñÈ¡µ½¶Ë¿ÚºÅ¡£µ«ÊÇ£¬Õâ¸ö·½·¨·Ç ......
xmlpost by HttpWebRequest:
protected string PostXmlToURL(string url,string data)
{
HttpWebRequest hwr = (HttpWebRequest)HttpWebRequest.Create(url);
hwr.Method = "POST";
Stream stream = hwr.GetRequestStream();
StreamWri ......
΢ÈíµÄSQL SERVERÌṩÁËÁ½ÖÖË÷Òý£º¾Û¼¯Ë÷Òý(clustered index£¬Ò²³Æ¾ÛÀàË÷Òý¡¢´Ø¼¯Ë÷Òý)ºÍ·Ç¾Û¼¯Ë÷Òý(nonclustered index£¬Ò²³Æ·Ç¾ÛÀàË÷Òý¡¢·Ç´Ø¼¯Ë÷Òý)……
(Ò»)ÉîÈëdz³öÀí½âË÷Òý½á¹¹
ʵ¼ÊÉÏ£¬Äú¿ÉÒÔ°ÑË÷ÒýÀí½âΪһÖÖÌØÊâµÄĿ¼¡£Î¢ÈíµÄSQL SERVERÌṩÁËÁ½ÖÖË÷Òý£º¾Û¼¯Ë÷Òý(clustered index£¬Ò²³Æ¾ÛÀàË÷Òý¡¢´ ......
eg:
select * from Exception_Log where DATEDIFF(day,OPER_DATE,getdate())<30 ;
/*
oper_date Ϊ±íÖвéѯ³öÀ´µÄʱ¼ä
getdate()ΪSQLServerÀïÃæ»ñµÃϵͳʱ¼äµÄº¯Êý
º¬Ò壺µ±Ç°Ê±¼ä-²éѯ³öÀ´µÄʱ¼äСÓÚ30Ìì
DateDiff¾ßÌåÓ÷¨£º
*/
DateDiff º¯Êý
·µ»ØÁ½¸öÈÕÆÚÖ®¼äµÄʱ¼ä¼ä¸ô¡£
DateDiff(interval, date1, da ......
C#ÖÐÏÔʾÖÐÎÄ£º
¡¾
·¢ËÍÊý¾Ý£º
string sReturnData = "ÄãºÃ";
Byte[]
bReturnData = Encoding.ASCII.GetBytes(sReturnData.ToCharArray());
m_sktSession.Send(bReturnData);
¡¾½«³öÏÖÂÒÂë¡¿
¡¿  ......