C# 如何创建BLC连接
如何创建blConnection(与数据库的连接)这将为变量分配DB连接路径C# 如何创建BLC连接,c#,sql,C#,Sql,如何创建blConnection(与数据库的连接)这将为变量分配DB连接路径 public class blConnection { private string constr = "Data Source=.\\MSSQLEXPRESS;Initial Catalog=DB_Name;Integrated Security=True"; public string getConstr() { return constr; } } 然后可
public class blConnection
{
private string constr = "Data Source=.\\MSSQLEXPRESS;Initial Catalog=DB_Name;Integrated Security=True";
public string getConstr()
{
return constr;
}
}
然后可以在BL类中重用它
public class blCustomerInformation
{
SqlConnection conn;
SqlCommand cmd;
SqlDataAdapter ada;
blConnection myConn = new blConnection();
public blCustomerInformation()
{
conn = new SqlConnection(myConn.getConstr());
conn.Open();
cmd = new SqlCommand();
cmd.CommandType = CommandType.StoredProcedure;
cmd.Connection = conn;
ada = new SqlDataAdapter();
ada.SelectCommand = cmd;
}
}
什么数据库?你需要给我们更多的背景信息!阅读以了解如何使问题变得好,并给它一个回答的机会!BL连接??你找过了吗?你访问过www.ConnectionStrings.com吗?不管怎样,当你在这里提问时,请给出更多的描述。这将有助于我们给您一个更好的答案:)