Нет результатов в DataGrid после соединения с Oracle

Question

Я пытался соединить Oracle с C #, но, к сожалению, безуспешно.Я новичок в C # и WPF.Спасибо за помощь

private void Window_Loaded(object sender, RoutedEventArgs e)
    {
        try
        {

            String connectionString = "Data Source=DWH; User Id=readonly; Password=********;";
            OracleConnection con = new OracleConnection();
            con.ConnectionString = connectionString;
            con.Open();
            OracleCommand cmd = new OracleCommand();
            cmd.CommandText = "SELECT * FROM SALARIES";
            cmd.Connection = con;
            OracleDataReader dr = cmd.ExecuteReader();
            DataGrid dg = new DataGrid();
            dr.Read();
        }
        catch (Exception exp) { }
    }

Answer 1

Спасибо всем, вот мое решение

private void Window_Loaded(object sender, RoutedEventArgs e)
    {
        try
        {

            String connectionString = "Data Source=DWH; User Id=readonly; Password=*******;";

            OracleConnection con = new OracleConnection();
            con.ConnectionString = connectionString;
            con.Open();
            OracleCommand cmd = con.CreateCommand();
            cmd.CommandText = "SELECT * FROM SALARIES";
            cmd.CommandType = CommandType.Text;
            OracleDataReader dr = cmd.ExecuteReader();
            DataTable dt = new DataTable();
            dt.Load(dr);
            DataGrid1.ItemsSource = dt.DefaultView;
            con.Close();
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.ToString());
        }
    }

Answer 2

Попробуйте: РЕДАКТИРОВАТЬ мой код

private void Window_Loaded(object sender, RoutedEventArgs e)
    {
        try
        {

            String connectionString = "Data Source=DWH; User Id=readonly; Password=********;";
            OracleConnection con = new OracleConnection();
            con.ConnectionString = connectionString;
            con.Open();
            OracleCommand cmd = new OracleCommand();
            cmd.CommandText = "SELECT * FROM SALARIES";
            cmd.Connection = con;
            OracleDataReader dr = cmd.ExecuteReader();
            DataGrid dg = new DataGrid();
            if (dr.HasRows)
                {
                    DataTable dt = new DataTable();
                    dt.Load(dr);
                    dg.ItemsSource= dt.DefaultView;
                }
           con.Close();
        }
        catch (Exception exp) { }
    }