SqlConnection建立的一种方法

ConnectionStringSettings setting = new ConnectionStringSettings();

setting = ConfigurationManager.ConnectionStrings["Codematic"];

DbProviderFactory facotory = DbProviderFactories.GetFactory(setting.ProviderName);

IDbConnection connection = facotory.CreateConnection();

connection.ConnectionString = setting.ConnectionString;

connection.Open();

SqlTransaction st = connection.BeginTransaction();

//Execute more sql

st.Commit();

connection.Close();