???????????????????????
???????????? ???????[ 2012/12/5 10:17:59 ] ????????
??????????????????Щ??????Mysql????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????λ??????????try......catch......?????????????????????????Finally?????Finally?й???????
??????????????????磬????????Щ??????????????????????ο???
??????????????????????????Mysql?????????????????Mysql????????Mysql??????д????????????????????????vb.net??Mysql?????????????vb.net????mysql???mysql???????????????????????????????????????й??
????????????????????????????????????????mysql???????????????????????????????????????е? ???????????????????????????????????????????????????????????????????????г???????mysql???????μ????????????????????????г????????mysql??????????3?????????????ó?????????????????????????ü????????????? Windows ????????????????????????е??????????????????????????????????????????????????????????????????????????????????????д??????????
?????????? C# ????д??????????μ? SqlConnection ?????????????????????????????????? Initial Catalog ?????????????????????????????????????
using (SqlConnection connection = new SqlConnection(
"Integrated Security=SSPI;Initial Catalog=Northwind"))
{
connection.Open();
// Pool A is created.
}
using (SqlConnection connection = new SqlConnection(
"Integrated Security=SSPI;Initial Catalog=pubs"))
{
connection.Open();
// Pool B is created because the connection strings differ.
}
using (SqlConnection connection = new SqlConnection(
"Integrated Security=SSPI;Initial Catalog=Northwind"))
{
connection.Open();
// The connection string matches pool A.
}
?????????????????????????????????д?????????????
?????????????????Connection ????? Close ?? Dispose ???????????????????????????????????????????????????????????????????“??????”??????100?????£?“??”??????裬“??”???????裬????”??????“?????????“??”??“??”???????????“??”????90?????2???????????“??”????10??????????????????????????100?????л????????????????????????????????????????”??????“?????????Connection ????? Close ?? Dispose ??????
????????????????????????????????????????????????
??????
???·???
??????????????????
2023/3/23 14:23:39???д?ò??????????
2023/3/22 16:17:39????????????????????Щ??
2022/6/14 16:14:27??????????????????????????
2021/10/18 15:37:44???????????????
2021/9/17 15:19:29???·???????·
2021/9/14 15:42:25?????????????
2021/5/28 17:25:47??????APP??????????
2021/5/8 17:01:11