.net MVC 连接数据本地数据库三种方法总结

.net MVC 连接数据本地数据库三种方法

<appSettings>
<add key="webpages:Version" value="2.0.0.0" />
<add key="webpages:Enabled" value="false" />
<add key="PreserveLoginUrl" value="true" />
<add key="ClientValidationEnabled" value="true" />
<add key="UnobtrusiveJavaScriptEnabled" value="true" />
<add key="con" value="server=.\sqlexpress; user id = sa;password = a123456;database = xsgl1;max pool size=512;"/>
</appSettings>
<connectionStrings>
<add name="conSql" connectionString="server=(local)\sqlexpress; User Id = sa;password = a123456;database = xsgl1;max pool size=512;"/>
</connectionStrings>
Configuration

public class HomeController : Controller
{
//
// GET: /Home/
public ActionResult Index()
{
#region connect sql function one
SqlConnectionStringBuilder one = new SqlConnectionStringBuilder();
one.DataSource = "(local)\\sqlexpress";
one.InitialCatalog = "xsgl1";
one.UserID = "sa";
one.Password = "a123456";
one.MaxPoolSize = 512;
SqlConnection sct = new SqlConnection(one.ConnectionString);
#endregion
#region connect sql function two
//string conn = ConfigurationManager.AppSettings["con"].ToString();
//SqlConnection sct = new SqlConnection(conn);
#endregion
#region connect sql function three
//string conn = ConfigurationManager.ConnectionStrings["conSql"].ConnectionString;
//SqlConnection sct = new SqlConnection(conn);
#endregion
SqlCommand scm = new SqlCommand();
scm.Connection = sct;
scm.CommandType = CommandType.Text;
scm.CommandText = "select 课程名 from kc where 课程号='A001'";
sct.Open();
SqlDataReader sdr = scm.ExecuteReader();
if (sdr.Read())
{
ViewBag.hao = sdr["课程名"];
}
sdr.Close();
return View();
}
public ActionResult About()
{
return View();
}
}
Controller

@{
ViewBag.Title = "Index";
}
@ViewBag.hao
<h2>Index</h2>

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