问一下这个.net数据库连接中的SqlConnection cn是什么意思?
usingSystem.Data.SqlClient;SqlConnectioncn=newSqlConnection(“Uid=Sa;pwd=123;database=...
using System.Data.SqlClient;
SqlConnection cn = new SqlConnection (“Uid=Sa; pwd=123; database=BookStore; server=172.16.19.11”); 展开
SqlConnection cn = new SqlConnection (“Uid=Sa; pwd=123; database=BookStore; server=172.16.19.11”); 展开
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