SqlConnection.ConnectionString例 次の例では、 を SqlConnection 作成し、接続を ConnectionString 開く前に プロパティを設定します。 private static void OpenSqlConnection() { string connectionString = GetConnectionString(); using (SqlConnection connection = new SqlConnection()) { connection.ConnectionString = connectionString; connection.Open(); Console.WriteLine("State: {0}", connection.State); Console.WriteLine("ConnectionString: {0}", connection.ConnectionSt
