连接数据库

using System.Data.SqlClient;

staticvoidMain(string[] args)

{stringconnString =@"Data Source=.; Initial Catalog=lh0216; User ID=sa;pwd=Founder123";//出了using括号objConnection类会被自动释放using(SqlConnection objConnection =newSqlConnection(connString))

{

objConnection.Open();

Console.WriteLine("数据库连接成功。");}

Console.ReadKey();

}