No data is displayed in "Chart"

I am trying to display the column "сoach" from the DB, and display their ranking according to the values in the column "total". As a result I have an empty "Chart"

private void fillshar()
{
    conn.Open();
    string selectQuerry = "SELECT сoach,total FROM groupfit";
    NpgsqlCommand command = new NpgsqlCommand(selectQuerry, conn);
    NpgsqlDataAdapter adapter = new NpgsqlDataAdapter(command);
    DataTable table = new DataTable();
    adapter.Fill(table);
    conn.Close();

    chartRate.Series["total"].XValueMember = "сoach";
    chartRate.Series["total"].YValueMembers = "total";
    chartRate.Titles.Add("Rating of the most popular trainers");
}

>Solution :

You define DataTable table = new DataTable(); but you don’t change the source of the chart itself…

Try calling chartRate.DataSource = table;